Standard Machining

The following shaft modifications are possible for all motors of the ST and IP, PD and DB series starting with an order quantity of 1 piece.

They can be ordered through the configuration tool in our online shop. See the overview of the flat-sided shaft modifications.


D-Cut / Flat-Sided Shaft

The flat-sided shaft offers higher rotation prevention compared to the round shaft, especially when the system is subject to increased requirements through a change in load and direction.

The dimensions for the respective motor size are shown in the configurator. The flat-sided shaft is standard at the DC motorseries.


Custom Machining

This machining is possible in all motors of the ST, DB and IP series from an order from an order quantity of 1 piece. 

Please use the form to define your modification. In the form you can also find the prices based on lot sizes. Please not that a later adaptation will need a 3 mm minimum distance form the surface of the locating flange.

Download Custom Machining Form


D-Cut

In addition to the standard D-Cut, flat surfaces for adjustment screws, undercut for the fixing of dowel pins, threaded blind hole with different thread sizes etc. can also be manufactured to your drawing data. As well as the D-Cut flattening, other flattening types such as 90° flattening, triangular flattening etc. are possible.

Price/Quantity151025
D-Cut79,90 €23,97 €15,98 €13,58 €

Shorter Shaft

Wherever space conditions are greatly restricted, shorter shafts are preferred.

Price/Quantity151025
Shorter Shaft89,90 €26,97 €17,98 €15,28 €

Cross Holes

In association with transmission elements such as straight cogged belt pulleys etc., cross holes enable the simple fixing of clamping pins to fulfill higher directional and load change requirements. Some users also use the cross hole to capture light lever forces and to drive flaps etc., to scan reference sensors, and much more.

Preis/Quantity151025
Cross Holes89,90 €26,97 €17,98 €15,28 €

Keyway

A keyway offers considerably higher rotation prevention, especially in comparison to the round shaft, and especially when the system is subject to increased requirements through a change in load and direction.

Key size depends on the shaft diameter:

  • 5 mm shaft diameter: DIN 6885 - A 2 x 2 x 14
  • 6.35 mm shaft diameter: DIN 6885 - A 2 x 2 x 14
  • 8 mm shaft diameter: DIN 6885 - A 3 x 3 x 12
  • 10 mm shaft diameter: DIN 6885 - A 3 x 3 x 12
  • 14 mm shaft diameter: DIN 6885 - A 5 x 5 x 25
Price/Quantity151025
Keyway129,90 €38,97 €25,98 €22,08 €

Woodruff Keyway

A Woodruff keyway offers far higher rotation prevention, especially in comparison to the round shaft, and especially when the system is subject to increased requirements through a change in load and direction. Size of the Woodruff key depending on the shaft diameter:

  • 5 mm shaft diameter: DIN 6888 - A 1.5 x 2.6
  • 6.35 mm shaft diameter: DIN 6888 - A 2 x 2.6 or A 2 x 3.7
  • 10 mm shaft diameter: DIN 6888 - A 3 x 3.7 or A 3 x 5 or A 3 x 6.5
  • 14 mm shaft diameter: DIN 6888 - A 5 x 6.7 or A 5 x 7.5 or A 5 x 9

Price on request.


Machined Shaft / Thinner Shaft

Machined shafts are used primarily to attach toothed wheels, pinion, pulleys etc. with small diameter of bore directly on the motor shaft. 

In addition, the machined shaft can also be manufactured with special end machining and higher tolerances, with threaded blind hole, undercut with specified groove widths and groove for the fixing of retaining rings etc. to your drawing data.

 

Price/Quantity151025
NEMA 8-23132,40 €39,72 €26,48 €22,51 €
NEMA 23-24144,20 €43,26 €28,84 €24,51 €
NEMA 34167,60 €50,28 €33,52 €28,49 €

Metric Thread

Not only is a thread useful for fixing rotating parts on the motor shaft, but creative constructors also use this low-priced and simple method for the realization of a linear positioning drive with low positioning speed.

In conjunction with longer motor shaft greater travels are also possible.

Thread depends on the shaft diameter:

  • 4 mm shaft diameter: max. M 4
  • 5 mm shaft diameter: max. M 5
  • 6.35 mm shaft diameter: max. M 6
  • 9.525 and 10 mm shaft diameter: max. M 8
  • 14 mm shaft diameter: max. M 12
  • In addition to fine-pitch screw threads, trapezoidal screw threads T6x1, T6x2 and T5x5 are also possible on request

Price on request.


Modifications in Quantity

This machining is possible in all motors of the ST and DB series as well as the protection class and Plug & Drive motors starting with a minimum order quantity between 100 and 1000 pieces, depending on the complexity of the machining.

See the standard tolerances for shaft machining in the table.


Bigger Shaft

Larger or thicker shafts are used primarily to enable higher radial forces. Possible as customer-specific motor for:

  • ST2818 series to max. 7 mm
  • ST4118, ST4209 series to max. 8 mm
  • ST5918, ST5909 series to max. 10 mm

Tolerance sleeves are a low-priced method of establishing compatibility with some more easily available transmission elements in other diameters. Reducing bushes or spring sleeves offer a comfortable solution for quickly mounting unequal shaft diameters in different shaft connections such as couplings, brakes, encoders etc. The motor shafts can also be manufactured in metric or imperial dimensions according to the application.


Longer Shaft

Longer motor shafts are required when the flange or type of mounting mean direct attachment is not possible.

In the case of longer shafts it is imperative to pay attention to the admissible radial force of the motors. If the admissible bearing load and expected service life is exceeded, a second thrust bearing must be provided.


Special Shaft Forms / Square and Hexagon Shafts

Square shafts or hexagonal shafts enable either manual or motoric adjustments (width adjustment, height adjustment, tool height adjustment, working width adjustment etc.) enable easy and fast adaptability to different working appliances or tools.

Also in automatic tool changers, different tools must be changed in an easy way and an axial shift ensured that is then be fixed via a double termination on the hexagonal or square shaft of the motors.


Hollow Shaft

In addition to the actual drive, hollow shafts also allow the feed-through of cables (e.g. current supply for other axes), tubes (fluids or compressed air for pneumatics) or even laser beams through the motor. In addition, a hollow shaft can accommodate a fine-pitch screw thread or trapezoidal spindle or a ball screw for a linear movement.

The hollow shaft stepper motors are otherwise mechanically interchangeable with standard motors. They can also be manufactured in large quantities with female thread or threaded pins. Single-sided closed hollow shafts or blind holes are also possible.

Hollow shaft versions are already available for selected motors of the standard series as standard. You can find an appropriate overviewon our hollow shaft motor site.


Knurling

The machining of diverse types of knurling  is possible in all motors of the ST and DB series.


Direct Gearing

Motors with pinion or direct gearing mounted on the motor shaft considerably facilitate direct mounting on existing reduction ratios (can already be used as input pinion), gears, toothed racks etc. Straight and helical toothed versions and for series applikation direct mountings can be offered.


Direct Gearing - Timing Belt

Toothed belts combine the advantages of flat belts and V-belts with the no-slip of chain drives, where the wraparound angle of the belt on the cogwheel must not be so large as with V-belts or flat belts.
In addition, they are distinguished by very smooth operation, lower belt pre-tension and the resulting lower bearing load that is adjusted by no-profile tightener pulleys on the outside of the belt.
The toothed belt drives are lubricant and maintenance-free, have only low space requirements, are vibration absorbing and offer high efficiency.
They are also positive (almost no slipping through between the engaging partners) and can, therefore, also be deployed as synchronous drives.


Accessories / Gear Wheels

Input pinion of Brass or Steel

Motors with pinion on the motor shaft considerably facilitate direct mounting on existing reduction ratios. In the straight toothed version, only 1-2 teeth are simultaneously engaged which transmit the whole load. In the case of helical teeth, several teeth are engaged which leads to higher load capacity and quieter running. The drawback are the axial forces that occur and that have to be absorbed in the bearings. Both gearings have high efficiency and enable no-slip transmission.

This machining is possible in all motors of the ST and DB series and the IP motors. If the shaft of the standard motor does not match the pinion, the shaft can be machined.


Input Pinion of High-Grade Plastic

Straight teeth or pinions are delivered in a wide variety of modules (m 0.3-6) and flank profiles. Straight, angled and spiral toothed bevel gears from modules 1 to 8 are also possible for the mounting of spiral bevel gears as well as hypoid gears. Like worm wheels, the shaft ends cross at 90° but have considerably better efficiency.
Straight teeth/pinion, bevel gears etc. can be delivered in different materials (steel, brass, plastics etc.) depending on the load requirement specified by the customer. The images on the left side are for the purposes of illustration.

This machining is possible in all motors of the ST and DB series and the IP motors. If the shaft of the standard motor does not match the pinion, the shaft can be machined.


Worm Gear

Motors with integrated worm gear can be installed at an angle of 90° to the load which has an extremely favorable effect on some applications. In addition, they offer large reduction ratios in the smallest space. Due to the high sliding friction quota the efficiency is rather moderate and, depending on the reduction ratio, lies between 30 and 70%.
From a certain reduction ratio a self-locking torque is created which can be used in vertical movements. It is imperative for the axial forces that occur in worm gears to be absorbed in the bearings and taken into account. The most varied sizes (module 0.5 - 2 in single-start or two-start version), materials (plastic, brass, bronze, steel - whirled or milled) and types of toothing (pressure angle 15-30°) with or without hub and centering lugs are used here.


Bevel gear

Depending on the customer-specific load requirement, bevel gears can be delivered in various materials (steel, brass, plastics etc.), straight toothed, helical toothed or spiral toothed, or as spiral bevel gear wheels with hardened teeth or lobed (with cyclo palloid, Klingenberg palloid or Glaesen arc teeth).
Motors with bevel gear can be installed at an angle of 90° to the load which has an extremely favorable effect on some applications. In addition, they offer large reduction ratios in the smallest space.
Due to their excellent efficiency, they offer a good alternative to worm gears with the required 90° redirection.


Timing Belt Wheel

Nanotec delivers and assembles synchronous pulleys in metric and imperial dimensions as well as without hub, with hub or tapered adapter sleeve (requires no keyway). The following tooth profiles (engagement dimensions to ISO), tooth forms, tooth pitches as well as toothed washer forms are possible:

  • Trapezoidal profile: MXL, XL, L, H, , XH, XXH, AT3, AT5, AT10, AT20, XXL, SL9, SL12
  • Round profile: 2M, 3M, 5M, 8M, 14M, 20M and CPIII, OmegaHP and HL for higher transmission power
  • Involute profile: S1M, S1.5M, S2M, S3M, S4.5M, S5M, S8M, and reinforced versions MTS8M, HPS, KPS
  • Serration profile: TN5, TN10 and other profiles P2M, P3M, P5M, P8M, T10, Minipitch with all common number of teeth, diameter and pitch

Wire Cord Pulleys

Wire cords and wire cables offer high accuracy and precision for applications such as printers, copying machines, plotters and small medical appliances etc.
Through a change of direction, they can also be used in three dimensions so that the motor can be placed at any position.
They are very light and quieter in comparison to toothed belts (approx. 3 dB)


Round Belt Pulley

Round belts offer easy installation with constant tractive forces up to a power of approx. 500W. They are used in preference for driving light to moderately heavy objects, have a high degree of freedom, and can also be used for the transmission of forces at a right angle.
They have excellent resistance to abrasion (high tensile and tearing strength) and oil resistance, even at high speeds. In addition, they offer low coefficients of friction (the coefficient of friction of steel/round belts with a Shore hardness of 75 A – 90 A is 0.85), enable fast installation and dismantling of machine parts as well as a cost effective bearing support due to the cutting to length of the relevant belt length. Simple O-rings are used for small transmission forces and tensile stresses down to < 0.7 N/mm² and with parallel guiding, can also take over transportation tasks.


V-Timing Belts

In contrast to the flat belts, the effective tension is not transmitted due to friction on the inside of the belt, but due to the friction forces as a result of the high pressure forces on the angled flanks of the V-belt. Thus, they offer a virtually frictional connection.
With more profiles (up to max. 5, designated by the letters H, J, K, L and M), the transmission power – and hence the range of applications – is expanded. Further benefits are the low height and a particularly good frictional connection together with minimum slip. Small disk diameter, low elongation and extremely large transmission ratios with high efficiency are additional advantages.


Flat Belt Pulley

Flat belt pulleys are suitable for the transport of light to moderately heavy objects in electrical engineering and handling technology of bulk goods or foodstuffs as well as for the sorting of different materials. Depending on the coefficients of friction of the belt surface, they are also suitable for certain inclinations and pitches and have an excellent resistance to abrasion and oil resistance.
To prevent the belt from running off the pulley, the drive rolls are designed to be spherical so the belt centers itself automatically. Due to the high radial bearing forces, additional external flanges in round or angular shaped version (with or without collar) with integrated ball bearing are recommended.


Chain Wheels

Usually the chain wheel is only used where high forces and powers are required. Chain wheels with or without hub, fastening borehole and keyway are available in the sizes 6 and 8 mm as well as 1/8", 1/4" and 5/8" divisions to DIN 8187 and DIN 8188 with a wide variety of numbers of teeth.

Due to the high radial bearing forces, additional external flanges in round or angular shaped version (with or without collar) with integrated ball bearing are recommended.


Track, Friction and Drive Rollers

The driven track and drive shafts are largely used as infeed rollers, feed rollers, friction rollers, braked rollers, fixing rollers for belt transport systems, track rollers with slots, drive pulleys for paper transport, foil transport, piece goods transport in the paper and foil industry and handling technology, semiconductor technology, transport technology, textile technology etc.


Eccentric Plates

The eccentric drives and cam plates baisically provide an easy and exact conversion from rotation to linear motion. They are deployed in the most different applications such as:

  • Adjustment tasks
  • High-resolution positioning drives
  • Cyclical pendulum or lifting motions
  • Automatic adjustment of temperature stresses
  • Mechanical preloads or rigidities
  • Automatic offset of mounting and wear differences
  • Automatic offset of height adjustments
  • Readjusting clamping devices and similar..

Through torque-free, fast and easy clamping and adjustment, they rationalize work processes as well as automatically acting cam lever for clamping procedures and adjustment work. In the standard eccentric tappets, the displacement path has a conveyor section of 1/1.2/2/2.5/3.5/5/7 mm always referred to 360°


Spiral Eccenter

Spiral eccenters are used for the adjustment and clamping of different objects. The spiral has the advantage that the clamping effect is the same size in every angular position and has a self-locking torque.
In the standard spiral eccenter, the displacement path has a travel of 3.3/4.1/4.8 mm referred to 225°
They rationalize work processes as well as automatically acting cam levers for clamping processes and adjustment work through torque-free, quick and easy clamping and adjustment.


Eccentric ball bearing

Eccentric ball bearings offer very high efficiency with simultaneously extremely high number of cycles and are, therefore, suitable for the following applications in particular:

  • High-precision reciprocating pumps
  • Diaphragm pumps with very high performance and easily adjustable stroke frequency and stroke (100 Hz/0.35 mm)
  • High-precision positioning systems in the submicrometer range of < 0.5 referred to the standard eccentric tappet with an eccentricity of 0.7 mm (0/-0.05 ) for 360°

The outside diameter of the bearing housing acts here as an eccentric cam and sets the reciprocating pumps in motion with the rotation of the eccentric shaft. Other sizes of eccentric bearing result in similar motion in the case of other stroke movements or positioning stroke.


Clamping Bolt

Clamping bolts have a concentric wedge surface and enable fast and safe clamping with a relatively large displacement path and high clamping force. If there are restricted space requirements in the axial direction to the motor, they are also applied for the automatic adjustment of a permanent stop or length compensation.
Depending on the clamping bolt, the axial adjustment possible here is 6-12 mm for a motor revolution of 250° which results in a resolution of 0.0125 mm/step for a stepper motor with 0.9° (such as the ST4209 or ST5909).


Rocker Arm

Rocker arms, articulated arms or actuating levers with different radii and lever arm lengths complete simple speed and force-dependent adjustment tasks.The following applications can, therefore, be realized easily and quickly:

  • Pull element and thrust element with adjustable tensile and thrusts via a rod system
  • Tilting movements, oscillating mechanics or oscillating movements with adjustable, high angular resolution
  • Tappet movements and
  • articulated arm movements
  • Actuating lever for zero backlash and force-locked connection in a device

Particularly for test setups, this means fast initial static bending stiffnesses, bending vibrations, deformations, recording of deflection curves of rods, torsional springs, dampers, valve and push rod deformations, longitudinal elongation and compressions etc. can be determined. The articulated arms can be delivered mounted on the motor in different lengths, angles, precision bores, screw thread tappings and with integrated bearings as well as a return spring.


Handwheels

Handwheels, knobs, knurled knobs, star and cross handle grips as well as adjustment screws made of different plastic with female and male threads are deployed on the rear-sided motor shaft for manual and adjustment settings. These can already be used with our standard motors with rear extension shaft (B version).


Codec Discs

Clamping bolts have a concentric wedge surface and enable fast and safe clamping with a relatively large displacement path and high clamping force. If there are restricted space requirements in the axial direction to the motor, they are also applied for the automatic adjustment of a permanent stop or length compensation.
Depending on the clamping bolt, the axial adjustment possible here is 6-12 mm for a motor revolution of 250° which results in a resolution of 0.0125 mm/step for a stepper motor with 0.9° (such as the ST4209 or ST5909).


Timing Disk

Timing or codec disks are available in different shaft holes with grub screw and different materials (stainless steel, aluminum, also burnished).

Also corresponding shaft supports for switching cams are adaptable.
Mounted codec disks can be ordered from 10 pieces and can be delivered economically in a series.