You are here: Home » Glossary

Glossary

A | B | C | D | E | F | G | H | I | K | L | M | N | O | P | Q | R | S | T | V | W | Z

Absolute encoder
The absolute encoder is a position generator, which reflects the actual position value in absolute terms.

AC
Abbreviation for alternating current - an electric current that changes its direction (polarity) in a regular sequence, and in which the positive and negative instantaneous values complement each other such that on average, the current flowing over time is zero. Alternating current is differentiated from direct current, which, other than with special effects, does not change with time.

AC-Motor
Abbreviation for an alternating current motor. AC stands for alternating current. A distinction is made between motors for use on different power supplies. Single-phase (230V/50Hz) and three-phase power supplies (400V/50Hz)are common.

Alternating current
(short: AC) means an electric current that changes its direction (polarity) in a regular sequence, and in which the positive and negative instantaneous values complement each other such that on average, the current flowing over time is zero. Alternating current is differentiated from direct current, which, other than with special effects, does not change with time.

Anti-twist protection
An anti-twist protection is a protective device, which protects two mating components against rotation. This can be achieved by a separate component, e.g. bolts, or by means of special forms of the mating components, such as making them square-shaped.

APQP
APQP is a continuous project management that is suitable for product and quality planning for all phases of the development process - Advanced Product Quality Planning - APQP -. All project and product-relevant information and documents are planned, monitored and managed centrally.

Asynchronmotor
An asynchronous motor is an AC motor of very sturdy design, that does not have electrical excitation or permanent magnets. A characteristic of an asynchronous motor is that when the motor is loaded, a difference is set up between the frequency of the supply voltage and the frequency of rotation (slip).

Axial force
This is a force acting along an axis of a shaft. In the case of drives with helical gear wheels, axial forces are generated in response to the torque input. These forces are absorbed in the drive and do not have any external effect. The specified permissible axial force in drives is the force that acts from the outside on the front of the drive output shaft.


Ball bearing
The ball bearing is a roller bearing. The best known form of ball bearing is the deep groove ball bearing. It is designed to primarily accommodate radial forces. Since the balls fit snugly in the relatively deep grooves, this bearing can also accommodate small axial forces.

Ball screw
A ball screw is the totality of a cylindrical screw drive with cones as rolling elements. In most cases, it is used to convert rotary motion into linear motion.

Bevel gear
The bevel gear is a machine element with a conical cylinder or cone, which has evenly distributed teeth on its outer surface. The torque is usually transmitted through a shaft angle of 90°.

Bevel gear drive
Is a drive type in which the drive shaft is crossed at a defined angle (usually 90°) to the output shaft. Typical examples are: Worm gear drives, bevel gear drives and crown wheel drives.

Brushless motors
Brushless motors are electric motors that transfer the current to the motor armature without sliding contacts (brushes). By eliminating mechanical abrasion, higher efficiencies are possible than with brush motors.

Brushless DC motor BLDC motor
= brushless direct current motor - a permanently excited three-phase synchronous motor, where the windings are fed with power in a certain order with a block shaped current. The relaying of the current blocks from one winding to the next is an electronic commutation Since, in contrast to direct current motors these operate without mechanical commutators and brushes, these motors are also referred to as brushless DC motors.


CAD
Computer-aided design means the design of mechanical systems with the help of software. It is used for example in the development of drive systems and transmissions. With 3D CAD programs, initially three dimensional solid models are produced. Two-dimensional drawings are derived from these. CAD models can be used as baseline data for further steps such as the control of CNC machine tools or simulations:

Calibration
Calibration provides information about the extent to which the indicated value on a measuring device corresponds with the true value of the measured variable. The "correct" value is represented by a reference standard, which is in turn traceable back to a national standard, and thus to the relevant SI unit.

CAQ
Computer Aided Quality Computer aided quality is an element of quality management. CAQ systems support the process data analysis, document and archive quality-related data for the manufacturing processes. CAQ includes computerised measures for planning and implementation of quality assurance, the transmission and long-term storage of data and analysis. For this, data from measured, attributive and visual inspections are evaluated by the CAQ system using statistical methods.

ccw
stands for counter-clockwise rotation.

Characteristic curve
A characteristic curve is a plot of two interdependent physical dimensions that is characteristic of a component, an assembly or a device. The characteristic curve is shown as a line in a two-dimensional coordinate system. The characteristic field shows several characteristic curves that are a function of other input variables (parameters) in the form of several characteristic curves or in a three-dimensional coordinate system.

CIP
Continuous Improvement Process - in short, CIP - is more of an attitude of all those involved and means a steady improvement with a lasting impact. This attitude permeates all activities and the whole company. CIP refers to the quality of the product, process and service. CIP is implemented through a process of continuous improvement in small steps (as opposed to rather larger, abrupt and drastic changes) using a continuous teamwork approach. CIP is a basic principle of quality management and an indispensable part of ISO 9001.

Circumferential backlash
The circumferential backlash is the angle by which the output shaft of a transmission can be rotated whilst at the same time holding the motor shaft in a fixed position.

Collisions
In physics, a collision describes a very short interaction between two particles or bodies. This changes the speed, the momentum and energy of the colliding bodies.

Concession
A concession is a permission to use or release a unit that has not met the specified individual requirements.

Corrosion
Corrosion is, generally speaking, the reaction of a material with its environment, causing a detectable change in the material and leading to an impairment of the function of a component or system. The best known type of corrosion is rust, i.e. the oxidation of metals.

Corrosion resistance
Corrosion resistance is the resistance of a material to reacting with its environment.

Crown gear
Crown gears are gears that carry the teeth at right angles to the face of the wheel. They can be combined with conventional spur gears, enabling the transmission of a rotary movement through a shaft angle of 90°.

Crown gearhead
A drive whose main component is a crown gear. Can be used as an alternative to worm and bevel gears and offers the advantage of a much greater efficiency (than a worm gear) and a simpler design (than a bevel gear).

cw
stands for clockwise rotation


DC
Abbreviation for direct current, an electric current whose magnitude and direction does not change.

DC, direct current,
denotes an electric current whose magnitude and direction does not change.

DC motor
The DC motor, also known as commutator motor, is a motor operated with direct current.

Development to prototype maturity
The development to prototype maturity is the brainstorming, conception, layout and design of a product as far as the prototype stage, based on the requirement specification.

Development to series production
The development to series production is the further detailing of the prototype development to the production stage. The basis for this is the qualification of the prototype.

Direction of rotation
The direction of rotation indicates in which direction a point, when viewed from a certain position, moves around an axis. We differentiate between clockwise or clockwise (cw or ccw)

Drive motor
A drive motor is a combination of a motor and a drive which ensures, conventionally, that the output shaft turns at a lower speed, but a substantially higher torque, than the motor.

Drive torque
The drive torque is the rotational force acting as a torque, e.g. in Nm, on the drive shaft of a transmission. The drive torque is related to the efficiency and the gear ratio by the required output torque.

Durability
Durability is the time for which a technical plant or a technical object matter can be used, without the exchange of core components, and without complete failure. The durability of a transmission cannot be precisely defined because of the many factors that influence it. It varies from about 20,000 operating hours, to less than 500 hours under extreme conditions.

Duty cycle
The duty cycle (ED) is defined as a maximum allowable operating interval of a drive or drive motor, after which a rest phase must be follow to avoid damage or destruction to the drive system as a result of overheating.


EC motor
A DC brushless motor has a rotor that is a permanent magnet, while the stator consists of several electromagnets. The electromagnets in the stator are energized via a bridge circuit in response to the instantaneous position of the rotor. It is therefore also known as an EC motor (electronically commutated).

Efficiency
The efficiency [%] is generally the ratio of power delivered (Pout =output) to power supplied (Pin = input).

Electric motor
An electric motor is an electromechanical converter that converts electrical energy into mechanical energy. In electric motors, the force exerted by a magnetic field on the current-carrying conductor of a coil is converted to movement. The counterpart is a generator.

Electromagnetic compatibility
Electromagnetic compatibility (EMC) indicates the normally desirable state that technical devices are not mutually interfering with each other by unwanted electrical or electromagnetic effects. It deals with technical and legal issues of unintended mutual influence in electrical engineering.

EMC
Electromagnetic compatibility (EMC) indicates the normally desirable state that technical devices are not mutually interfering with each other by unwanted electrical or electromagnetic effects. It concerns the technical and legal issues arising from unintended mutual interference in electrical engineering.

Encoder
Rotary position generator, generally based on optical or magnetic principles, and suitable for detecting position. The position is usually output as two 90° offset signals.


FEM
The Finite Element Method is a numerical method for the approximate solution of differential equations with boundary conditions. It is also a modern method of calculation used in simulations, for example strength considerations.

Flange
The drive and drive motors are usually mounted on the flange at the user's factory. The connection between the motor and the drive is also on the flange.

FMEA
FMEA (Failure Modes and Effects Analysis) is an analytical method of reliability engineering for the identification of potential weaknesses. In terms of quality management, FMEA is used to prevent faults and increase the technical reliability on a preventive basis. FMEA can be used in the design and development phase of new products or processes. FMEA follows the basic idea of a precautionary fault prevention rather than remedial fault detection and correction (fault management) by early identification and evaluation of potential causes of errors during the design phase. Through a systematic approach and implementing its findings, design defects can be prevented in new products and processes.


Gear
The gear machine element is a wheel with teeth evenly distributed over the circumference. It mainly used for transmission between two rotations (pairing of two gears) or a rotation and a linear movement (pairing of a gear with a toothed rack).

Gear manufacturing
Gear manufacturing is a field of engineering that deals with the design and manufacturing of gears.

Gearing ratio
In a transmission, the ratio is the faster speed of the driven wheel compared to the driving wheel. However in most cases it is reduced, because the slower speed of the driven wheel result in a higher torque.

Gearset
A gearset consists of an axle and two gears.

Gear speed
A system consisting of at least two gears with spur gears, and at least three gears with planet gears, from which a ratio can be calculated. In order to achieve higher ratios, several gear stages are connected in series in the transmission. The product of the ratios of the individual gear speeds gives the overall gearing ratio of the transmission.

Gear type
There are different types, including spur, worm, bevel and planetary gear units and their hybrid forms.

Grease lubrication
The choice of lubricant is mainly based on the requirements list. Primus Präzisionstechnik drives are lubricated with high quality grease. For common applications, this provides one-off permanent lubrication for life. Grease lubrication also provides protection against corrosion, optimises the efficiency and noise.


Heat treatment
In metalworking processes, heat treatment describes a process for adjusting the technological properties of materials at elevated temperatures.

Helical gear
A helical gear is a wheel with teeth uniformly distributed over the circumference at an angle. The inclination of the teeth is also referred to as angle of inclination, and can be in the left direction or in the right direction. It mainly used for transmission between two rotations (pairing of two gears) or a rotation and a linear movement (pairing of a gear with a toothed rack).

Holding torque
The holding torque is the torque that must be applied to move a transmission backwards - from the output side - from its resting position.

Hysteresis
The hysteresis of a pressure gauge is the largest difference, for the same pressure level, between the measurement of the output variable when the pressure is increasing and the subsequent measurement made when the pressure is decreasing. It is determined in a closed measuring cycle between initial and final value of the measuring range and includes, in addition to the elastic effects, design-related factors, such as friction and backlash.


Idea
An idea is a (sudden) thought, intuition or inspiration.

IMDS
The International Material Data System - in short: IMDS is an archive, exchange and management system for the automotive industry. It is based on creating a material data sheet in which, for the component in question, all materials and components used in it are identified and all the required information about them that is necessary for the subsequent recycling of the vehicle part is collected. The main requirement of the automobile manufacturers is to be able to summarise and analyse all the data of a material data sheet, a component, an assembly, a module, and an entire vehicle. This is possible thanks to the specific evaluation and grouping of the individual material data sheets in the IMDS.

Incoming goods inspection
Incoming goods inspection is the incoming inspection of goods for predefined characteristics within a company.

Initial sample
Initial samples are products that comply in form, shape, and manufacturing with series products produced later.

Initial sample inspection report
The initial sample inspection report (ISIR) is part of the qualification of the product. In principal it is the survey of results of the testing of the dimensional and geometric matching of an initial sample with the design specifications.

Initial sample qualification
The initial sample qualification is the inspection of the properties of the initial sample with respect to the requirements defined in the current requirement list. The inspection shall be conducted on a representative set of initial samples for each inspection and documented accordingly.

Input speed
The speed with which the motor typically drives the transmission on the input side.

Involute gearing
Involute gearing is a specific type of tooth for the gears and racks, where flanks of the teeth on the gearwheel are formed as involutes. Its advantages are such that today it is the most significant type of gearing in mechanical engineering.

ISIR
Initial Sample Inspection Report (ISIR) is part of the qualification of the product. In principal it is the survey of results of the testing of the dimensional and geometric matching of an initial sample with the design specifications.


Keyway
The keyway is an element of a machine used as an additional component for connecting the shaft to the hub. The connection is form-fitting and serves to transmit torque and speed (for example, drive shaft - belt pulley).

Keyway connection
A keyway connection is a form-fitting combination of a shaft, drive wheel and keyway to transmit torque and speed.


Label
Information sign on the packaging of a product or the product itself.

Limit switch
Electrical switch which, when a machine part to be moved, such as an output shaft, reaches a specific position, a signal is triggered which as a result, prevents any the further movement in this direction.

Laminated fabric
Laminated fabric refers to an approximately 70-year-old fibre-plastic composite, in which several layers of textile - linen or cotton fabric - are glued together with thermoset phenolic resin. Despite its age, it is still used in a lot of specialised technical applications, for example in motors, electrical devices and in general as machine components such as gears. The particular properties of laminated fabric include toughness, abrasion resistance and high thermal stability. Furthermore it is an electrical insulant and has high noise and vibration damping properties.

Lever arm
The portion of the lever between the fulcrum and the point at which the force acts.

Lifetime lubrication
The choice of lubricant is mainly based on the requirements list. Primus Präzisionstechnik drives are lubricated with high quality grease. For common applications, this provides one-off permanent lubrication for life. Grease lubrication also provides protection against corrosion, optimises the efficiency and noise.

Lift drive
Lift drives (see linear drives) cover all drive systems, in which all points of the moving body move in the same direction. In physics, this is referred to as "translational motion".

Lifting force
The lifting force is a moving force applied by a linear drive.

Lifting speed
The lifting speed is the distance travelled per unit of time (e.g. mm/s) of a linear motion unit (e.g. toothed rack).

Linear drives
Linear drives cover all drive systems, in which all points of the moving body move in the same direction. In physics, this is referred to as "translational motion".

Lubricant
Lubricants are used for lubrication and serve to reduce friction and wear, as well as for power transmission, cooling, vibration damping, sealing and corrosion protection.

Lubrication
Lubrication is to prevent the direct contact of moving elements. The use of advanced lubricants will thus increase the efficiency of the drive and the bearing life.


Man-day
A man-day is a unit of 8 hours

Manufacturing resources
Manufacturing resources are resources which are used for the production and testing of the product, such as tools, jigs and test equipment. The production of manufacturing resources usually requires the series design to have been released.

Micro motors
Micro motors are electric motors that are characterised by their very small and precise design They are thus ideal for small spaces and precise applications. In general, micro motors have a relatively low power consumption.

Milestone
A milestone is an event of special significance. Reaching a milestone is usually the precondition for moving on to a further phase.

Motor design
The motor design describes a stage of the design phase of a technical product, where mathematical calculations are used to investigate whether the motor meets the requirements of the technical product. Typical requirements are speed, nominal voltage, torque, external dimensions.

Motor data
The motor data provides specific electrical and mechanical information regarding of the motor. Typical information includes speed, nominal voltage, output torque, efficiency, etc.

Motor mounting
A motor mounting is a component used for fixing and centring a motor (see flange).

Motor shaft
The motor shaft is a component of the electric motor. It transmits rotational motion from the motor to the transmission.

Motor shaft diameter
The motor shaft diameter is the measured diameter of the motor shaft.

Motor speed
Motor speed is the name for the speed of the motor shaft delivered by the motor, where the speed or frequency of rotation (n) or rotation frequency (f) is called the quotient, formed from the number of revolutions or turns and the required period of time (t). The usual technical unit is r.p.m. (revolutions per minute).

Motor torque
Also drive torque or (gear) input torque = torque delivered by the motor.


Needle roller bearings
Needle roller bearings are roller bearings with a very low profile. The rolling elements resemble needles (hence the term needle bearings), and are relatively thin, long cylindrical rollers.

Nominal temperature range
The nominal temperature range or rated temperature range is the temperature range in which the pressure gauge maintains the accuracy required by its specification.


Operating temperature range
The operating temperature range is the temperature range for operation of the drive system. The operating temperature range is defined in the requirement specification.

Order of magnitude
The order of magnitude are integer powers of base 10 and an arbitrary integer exponent.

Outer packaging
Outer packaging refers to packaging, that contains several individual packages.

Outgoing goods inspection
Outgoing goods inspection is the final testing of products for predefined characteristics within an company, directly before sending them to the customer.

Output
The physical size of the output is defined as the energy per unit time and is measured in watts [W]. There is a distinction between electrical power / output (voltage V x current I ) and mechanical output (torque M x rpm n). Taking into account the basic units for torque [Nm] and the speed [1/min] the formula is: P [W] = M [Nm] x n [1/min] / 955

Output power
The effective power available to the user as an output of the drive system.

Output shaft
The output shaft allows the torque produced by the drive system to be tapped.

Output speed
The output speed is the number of revolutions of the output shaft per unit time, for example, in 1/min. The speed of the output shaft of a drive, on the output side.

Output stage
The output stage is the last gear in a drive system, which is directly connected to the output shaft.

Output torque
The output torque is the rotational force acting as a torque, for example, in Nm, on the output shaft of a drive. The output torque is related to the efficiency and the gear ratio with the required drive torque.


Packaging
A specifically attached, if possible without much effort, easily released wrapper of a product is called packaging.

Peak torque
Peak torque is the maximum effective force on a circular path around a central point.

Performance specification
The customer defines the requirements of the product to be developed in the performance specification.

Permanent magnet motor
Also called a commutator motor - the most common form of DC motor.

Pictogram
A pictogram is a single symbol or icon that conveys information by a simplified graphic representation. In the age of globalisation and internationalisation, pictograms are now used in standardised form to convey information that is independent of language or as quickly as possible (e.g. a traffic sign) or as a danger symbol to warn of danger.

Pinion gear
A pinion gear is the name for a small gear (relatively few teeth). The term is commonly used for the engine mounted gear that drives the transmission.

Pitch circle
The pitch circle or fixing circle is the diameter on which the fixing holes of the drive are arranged in a circle around the output shaft.

Pitch circle diameter gear
The diameter of the pitch circle is equal to the product of the module m and the tooth number z, d0 = m · z

Plain bearing
A plain bearing is a machine element or component that rests on the sliding movement (guide) of a component or on a bearing (sliding guide). Unlike other types of bearings (roller bearings) a plain bearing is characterized in that the moving parts move past each other in direct contact, or only separated by a film of lubricant, and therefore in general they have to rely on excellent lubrication to overcome the sliding friction. This is achieved with lubricating oils and greases, but also by soft metal bearings (copper, bronze, tin, etc.) or other self-lubricating principles.

Planetary drive
Planetary drives are a special type of drives, where several external gears rotate around an inner gear. Because of their compact design, they are used in applications where limited space is available and a coaxial output is required.

Planetary gear
Planetary gear is a gear wheel that rolls between the sun gear and ring gear and thereby moves in an orbit around the sun gear.

Planet carrier
The planetary carrier forms a bearing for the planetary gear axle and passes the torque generated by the revolution of the planets around the sun to the output shaft.

Plate
Punched out sheet metal part, also produced in other ways, for example, for use as a housing element with "plate" drives.

Plate drive
The plate drive is a form of spur gear drive which is characterized by the integration of the drive into two or more sheet metal plates. By adding more gears and intermediate shafts, multiple geared plate transmissions can be produced.

Positioning drives
Positioning drives are usually combinations of electric motors and a form of transmission, where the converted torque at the output drives a device for positioning objects. For example, the positioning of cartons.

Pot drive
The pot drive is a form of spur gear drive, which is characterized by the integration of the drive in a pot housing. By adding more gears and intermediate shafts, a multi-stage pot drive can be produced.

Power consumption
The power that is supplied to a drive system.

Precision drives
Precision drives are a special type of drive that are ideal for very small and precise applications.

Precision engineering
Precision engineering is a part of engineering dealing with the development and production of very small and precise products.

Printed circuit board
A printed circuit board is a carrier for electronic components. It provides the mechanical fixing and electrical connection. Almost every electronic device includes one or more circuit boards. PCBs consist of electrically insulating material with conductive connections glued to them (conducting tracks). Fibre -reinforced plastic is a common insulating material. The conducting tracks are usually etched from a thin layer of copper. The components are soldered to solder pads or eyelets.

Project
A project is a plan, limited in both time and content, and differentiated from the other activities of the body or organisation running it.

Project completion
Project completion is achieved when the series release is issued and the product is delivered into production.

Project phase
The project phase is a task which is worked on over a defined period (duration in man-days). A phase ends with a milestone.

Protection class
Equipment that may not be used in all environments is classified into so-called IP protection classes (IP = International Protection).

Prototypes
Prototypes are products that in form, shape and operation are already largely similar to the series products. The manufacturing facilities and tools of mass production are not used, or only partially used, in the production of prototypes. The production of prototypes is usually preceded by the release of the prototype design.

Pulley
The pulley is a machine component that connects shafts with a belt. A gear ratio is possible by choosing different diameters.


QA
QA or Quality Assurance are measures to ensure that a product or service reaches a specified level of quality. According to ISO 9000, it is not about optimising the quality of a product, but rather maintaining a given - possibly a low - quality level.

QM
Quality Management - in short: QM - basically describes all organised measures that improve the performance of products, processes or services of any kind.

Qualification of prototypes
The qualification of prototypes is the inspection of the properties of the prototypes with respect to the requirements defined in the current list of requirements.


Radial force
The radial force is the force at a right angle to the axis, and is applied by the transfer elements, such as sprockets or pulleys. In drive technology, the phrase that is often used is "maximum allowable radial load", which refers to the force with which an output shaft at a specific location (defined distance to the bearing point of the shaft) can be loaded continuously and without any negative effects on the life of the drive.

Reference circle
The reference circle is the diameter on which the fixing holes of the drive are arranged in a circle around the output shaft.

Relative humidity
The relative humidity describes the percentage ratio between the current water vapour pressure and the saturation vapour pressure. At a relative humidity of 50%, the air contains only half the amount of water vapour, which can, as a maximum, be held at the current temperature. At 100%, the air is fully saturated with water vapour. When the value is exceeded, the air can no longer bind the water vapour and the excess moisture is precipitated in the form of condensation or fog.

Release of the series design
The release of the series design is the confirmation by the client that the completed design of the product meets the requirements of the current requirements list / performance specification in terms of operation and design, as regards the series products. Primus Präzisionstechnik also confirms that the technical design of the product was carried out on the basis of the defined criteria.

Release for series production
Release for series production is the confirmation by the customer and Primus Präzisionstechnik that the initial samples delivered meet the requirements of the current requirements list / performance specification. The basis is the qualification of the initial sample.

Release of the prototype design
The release the prototype design is the confirmation by the client that the design of the product that has been created meets the requirements of the current requirements list / performance specification in terms of operation and design, as regards the prototypes. Primus Präzisionstechnik also confirms that the technical design of the product was carried out on the basis of the defined criteria.

Requirements list
The requirements list is a systematic, agreed compilation of all the information and specifications for product development by Primus Präzisionstechnik based on the performance specification. When there are additions or changes, a corresponding versioning is created.

Return stop
A return stop prevents unwanted return torque in non-self-locking drives.

Reverse torque
The reverse torque is the torque required to cause the drive shaft of a stationary transmission to rotate.

Ring gear
A ring gear is an internally toothed gear - a ring whose inner surface carries the teeth. Ring gears are an important component of planetary gears. It is directly engaged with the planet gears and mounted coaxially to the sun gear. Ring gears can also be combined with spur gears. This forms a spur gear section, which does not change the direction of the transmitted rotation.

Roller bearings
Roller bearings are bearings, in which two relatively movable components, the so-called inner ring and the outer ring, are separated by rolling bodies. They are used to support radial and axial forces in axles and shafts and thereby keep the power loss generated by friction and the wear to a minimum.

Rotary drive
A drive system with rotary output. Typical examples are: Worm drives, spur gear drives, bevel gear drives and crown gearheads.


Sample
The term pattern is not used by us. We distinguish between prototypes and initial samples.

Sampling rate
The sampling rate is the frequency in which a function is executed cyclically (for example, the collection of data).

Sampling time
The sampling time is the time interval during which a function is executed cyclically (for example, the collection of data).

Self-locking
Self-locking describes the mechanism whereby the resistance generated by friction between two adjacent bodies acts against slipping or twisting. In order to achieve self-locking, the resulting angle is made smaller than the arc tangent of the coefficient of static friction.

Series production
Series production is the manufacturing of the product after release for production.

Sketch
A sketch is the first cursory, graphical representation of the solution idea for the drive system or transmission.

Shaft
The shaft is a rotatable mounted axle for transmitting torque.

Slip clutch
A slip clutch is an automatic, torque adjustable safety clutch that protects the components or limits damage to them. If the so-called slip torque is exceeded, this results in the clutch slipping and thus an interruption in the transmission of the torque.

Small gear units
Small gear units are special types of drive that are ideal for very small and precise applications.

Sound power
The sound power of a sound source is an acoustic dimension. It refers to the acoustic energy emitted from a sound source per unit time. It is one of the sound energy dimensions and is a mechanical output. The unit is watts (W). The corresponding logarithmic dimension is the sound power level.

SPC
Statistical Process Control is usually understood as an approach to the optimisation of production and service processes on the basis of statistical methods. Statistical process control is used to control processes in order to keep the level of quality attributes at predetermined reference values or within certain tolerance limits.

Spindle drive
The spindle drive is one of the drive systems in linear drives. The translational movement of the moving body is in this case produced by a rotating threaded spindle and transferred to the spindle nut. Thus a rotary motion is converted into a linear motion.

Spline
A spline is a detachable driving pin (form-fitting) for transmitting high torques through an axial gear from shaft and hub.

Spur gear
The spur gear drive is one of many forms of drive that is characterized by two parallel shafts. The simplest form, the single-stage spur gear transmission, consists of two axles, each with a toothed wheel. Multiple spur gears can be produced by adding more toothed wheels and intermediate shafts.

Stepper motor
A stepper motor is a synchronous motor in which the rotor (rotating motor part with shaft) can be rotated by a controlled stepwise rotating electromagnetic field of the stator coils (stationary motor part), by a minimum angle (step) or its multiples. Stepper motors also exist in the form of linear motors.

Storage temperature
The temperature at which a drive system must be stored and transported without damage.

Synchronous motor
An AC motor, which has an electrical excitation, or permanent magnets, and in which even when under load no difference is established between the frequency of the supply voltage and the frequency of rotation. Due to the small design and simple control method, permanent magnet synchronous motors are in particular used in lower power servo drives. Synchronous motors can also be constructed as linear motors.


Temperature range
The temperature range indicates a spread between two temperatures. In general, the temperature range for a particular application is defined e.g. operating temperature or rated temperature range, critical temperature range.

Test equipment
Test equipment are aids for qualifying and testing the product as well as monitoring the production process.

Three phase AC motor
A three phase AC motor is an electric motor that is operated with three-phase alternating current Three-phase alternating current, colloquially power current, a system of three inter-linked alternating currents.

Three-phase alternating current
Three-phase alternating current, colloquially power current, a system of three inter-linked alternating currents.

Tolerance
Tolerance refers to the state of a system in which a deviation from the normal state caused by an interfering effect (still) makes no counter adjustment or countermeasure necessary and has no consequences. In a narrower sense, tolerance is the extent of the deviation in size from the standard state or standard size, such that the functioning of a system is not yet endangered.

Tool specific
Tool specific manufacturing means shapes that receive their external geometry from tool shapes, e.g. by injection moulding.

Tooth design
The tooth design includes the sizing, material selection, strength and noise optimisation of a gear ratio. Here, the transmission properties are affected by numerous parameters in the desired direction (running smoothness <-> torque <-> high reduction <-> small size <-> durability …).

Toothing
Toothing refers to the part of a gear where the circumference is formed by evenly spaced teeth. Roughly, the tooth shape resembles the shape of a trapezoid. It provides a form-fitting connection for the transmission of force and motion.

Torque
Torque is the force acting around a central point in a circular path. The unit is Newton meters [Nm]. The power is the product of the torque and the rotational speed.

Transmission gearing
In transmissions, the ratio in gearing is the faster running of the driven wheel compared to the driving wheel However in most cases it is reduced, because the slower speed of the driven wheel results in a higher torque.

Transmission output speed
The transmission output speed is the resulting speed at the output side. Usually a high input speed is generated by the motor, which is reduced by the transmission, so that a lower speed is generated at the output.

Transmission output torque
The transmission output torque is the resulting torque at the output. Usually a small input torque is generated by the motor, which is reduced by the transmission, so that a higher torque is generated at the output.


Variable speed drives
Variable speed drives are drives that with the help of the transmitted torque by a rotating output, can regulate other technical components. For example, valve adjustment.

VDA
German Association of Automotive Industry

Version
Versions are the successive states of a document or a product.


Worm gear
The worm gear is a special form of helical gear. The angle of the helical gear is such that a tooth goes around the spindle more than once. In this case, the tooth is referred to as a gear. There are single or multiple gear worms.

Worm gear drive
Worm gear drives belong to the screw rolling gear category and consist of a helical drive element, the so-called screw, which when turned causes rotary motion in a gear (worm gear) in which it is meshed. Worm gears are mainly characterised by a misalignment between the drive shaft and output shaft. Depending on the efficiency, worm gears can also be self-locking.

Worm gear motor
A worm gear motor is a combination of a motor, usually an electric motor, and a worm gear, which ensures that the output shaft rotates at a lower speed - but at a substantially higher torque - than that of the motor. In most cases, this combination is designed so that it is self-locking, i.e, they cannot rotate backwards.

Worm gear set
A worm gear set pairs the worm gear and worm wheel, for the transmission of torque.

Worm shaft
The worm shaft is a special form of a helical gear drive. The angle of the helical gear is such that a tooth goes around the spindle more than once. In this case, the tooth is referred to as a gear. There are single or multiple worm shafts.

Worm wheel
The worm wheel is machine element with circumferentially uniform helical wheel. It is used for transmission between two rotations (mating worm and worm).


Zero series
Zero series, also called pre-production or pilot series, are products that have been manufactured in the introductory phase of mass production for final testing purposes. It is thus part of the development phase of a product development.

Get in contact with us!

Go to the top