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GMN

GMN is a German manufacturer of high-precision machine components, with a product portfolio centered on angular contact ball bearings and sprag-type clutches. The company's bearing line includes super-precision angular contact bearings in the KH and S series, available in single and matched duplex configurations. These bearings are produced to ABEC P4 tolerance class, with contact angles of 15°, 17°, or 25°, and are offered with open or double-sealed designs. Cage materials include phenolic resin, which is standard for high-speed applications. Bore sizes in the catalog range from 12 mm to 50 mm, depending on the series. The clutch product family comprises ball-bearing-supported sprag clutches in the FP and FPD series, with bore sizes from 20 mm to 50 mm and static torque ratings from 89.2 ft-lb to 340 ft-lb. These clutches are designed for overrunning, indexing, and backstopping applications. GMN components are used in machine tool spindles, robotics, printing presses, and industrial drive systems where positional accuracy and repeatability are required. 3G Electric stocks a range of GMN bearings and clutches, including multiple SKUs for each product family, to support maintenance and production requirements across industries. The inventory includes single bearings, matched pairs, and clutches with varying bore sizes and torque capacities. 3G Electric provides logistics support for worldwide delivery, enabling procurement teams to source these precision components without geographic restriction. All GMN products supplied by 3G Electric are sourced through authorized channels, ensuring traceability and compliance with original specifications. For engineers and buyers, the availability of multiple configurations—such as sealed versus open bearings, different contact angles, and duplex sets—allows selection based on application-specific load, speed, and lubrication conditions. The ABEC P4 rating corresponds to ISO P4 precision class, suitable for applications requiring minimal runout and consistent preload. The sprag clutches are designed for freewheel operation with low drag torque and high torque density. 3G Electric's catalog includes part numbers and key specifications for each item, facilitating direct cross-referencing with existing maintenance schedules or new design projects.

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About GMN

GMN is a German manufacturer of high-precision machine components, with a product portfolio centered on angular contact ball bearings and sprag-type clutches. The company's bearing line includes super-precision angular contact bearings in the KH and S series, available in single and matched duplex configurations. These bearings are produced to ABEC P4 tolerance class, with contact angles of 15°, 17°, or 25°, and are offered with open or double-sealed designs. Cage materials include phenolic resin, which is standard for high-speed applications. Bore sizes in the catalog range from 12 mm to 50 mm, depending on the series. The clutch product family comprises ball-bearing-supported sprag clutches in the FP and FPD series, with bore sizes from 20 mm to 50 mm and static torque ratings from 89.2 ft-lb to 340 ft-lb. These clutches are designed for overrunning, indexing, and backstopping applications. GMN components are used in machine tool spindles, robotics, printing presses, and industrial drive systems where positional accuracy and repeatability are required. 3G Electric stocks a range of GMN bearings and clutches, including multiple SKUs for each product family, to support maintenance and production requirements across industries. The inventory includes single bearings, matched pairs, and clutches with varying bore sizes and torque capacities. 3G Electric provides logistics support for worldwide delivery, enabling procurement teams to source these precision components without geographic restriction. All GMN products supplied by 3G Electric are sourced through authorized channels, ensuring traceability and compliance with original specifications. For engineers and buyers, the availability of multiple configurations—such as sealed versus open bearings, different contact angles, and duplex sets—allows selection based on application-specific load, speed, and lubrication conditions. The ABEC P4 rating corresponds to ISO P4 precision class, suitable for applications requiring minimal runout and consistent preload. The sprag clutches are designed for freewheel operation with low drag torque and high torque density. 3G Electric's catalog includes part numbers and key specifications for each item, facilitating direct cross-referencing with existing maintenance schedules or new design projects.

Common Applications

  • Machine tool spindles — GMN KH series angular contact bearings (e.g., KH 6002) for high-speed, high-precision rotation
  • Robotics — GMN S series duplex bearings (e.g., S 61806) for joint articulation requiring axial rigidity
  • Printing presses — GMN FP series sprag clutches (e.g., FP 463-M) for overrunning and indexing in web feed systems
  • Industrial drives — GMN FPD series clutches (e.g., FPD 432-Z) for backstopping in conveyor and elevator applications
  • Automated assembly equipment — GMN KH 6001 bearings for positioning stages with low runout requirements
  • Packaging machinery — GMN matched duplex bearings (e.g., KH 6005) for high-speed rotary cutters and sealers

Frequently asked questions

Common questions about GMN from 3G Electric.

What precision class do GMN angular contact bearings typically meet?

GMN super-precision angular contact bearings in the KH and S series are manufactured to ABEC P4 tolerance class, which corresponds to ISO P4. This precision level specifies tight dimensional and running accuracy tolerances, making these bearings suitable for high-speed spindles and other applications where minimal vibration and consistent preload are required. The ABEC P4 rating is verified through inspection and testing during production.

Are GMN sprag clutches available in different bore sizes?

Yes, GMN ball-bearing-supported sprag clutches in the FP and FPD series are offered with bore sizes ranging from 20 mm to 50 mm. For example, the FPD 432-Z has a 20 mm bore, while the FP 463-M has a 50 mm bore. Static torque ratings vary accordingly, from 89.2 ft-lb to 340 ft-lb. These clutches are designed for overrunning, indexing, and backstopping applications in industrial drives.

Can GMN angular contact bearings be ordered as matched duplex pairs?

Yes, GMN offers matched duplex angular contact bearings in the KH and S series, such as the KH 6008 and S 61806. These are supplied as a single pair (1 PR) with preload and axial clearance matched to ensure consistent performance in back-to-back or face-to-face mounting arrangements. Duplex sets are commonly used in machine tool spindles where axial rigidity and load sharing are critical.

What cage materials are used in GMN super-precision bearings?

GMN super-precision angular contact bearings typically use phenolic resin cages, as seen in models like the KH 6001 and KH 61901. Phenolic cages are lightweight, have low thermal expansion, and provide good wear resistance at high speeds. They are standard for applications requiring reduced inertia and stable cage guidance under varying operating conditions.

Are GMN clutches suitable for backstopping applications?

Yes, GMN sprag clutches in the FP and FPD series are designed for overrunning, indexing, and backstopping. The sprag design allows free rotation in one direction and locks in the opposite direction, making them suitable for preventing reverse rotation in conveyor systems, elevators, and other machinery where backstopping is required. Static torque ratings up to 340 ft-lb are available.

What contact angles are available for GMN angular contact bearings?

GMN angular contact bearings are available with contact angles of 15°, 17°, and 25°. For example, the S 61806 has a 15° contact angle, the KH 6001 has a 17° angle, and the KH 6008 has a 25° angle. The contact angle affects axial load capacity and speed capability; higher angles provide greater axial load capacity, while lower angles are optimized for higher speeds.