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Nuts, Bolts and Knowledge

Shaft couplings

Precision shaft couplings in jaw, slit, disc, bellows, high-gain, cross-joint and Oldham types, made in Japan for servo, stepper and general-purpose drives, with full technical data on nbk1560.com.

NBK precision shaft couplings

Motion control

Backlash-free couplings for servo and stepper motors

Zero-backlash, torsionally rigid couplings for precise positioning in xy-stages, index tables, machine tools, pick-and-place machines, 3D printers and industrial robots.

NBK XHW-C disc flexible coupling
Zero backlashHigh torqueHigh torsional rigidity+3Zero backlashHigh torqueHigh torsional rigidityDisc typeServo motorStepper motor

Backlash-Free Disc Flexible Coupling (XHW · XHS · XHW-L)

Zero-backlash stainless-steel disc coupling with very high torsional stiffness for high-speed, high-precision servo and stepper positioning.

NBK XUT-C cross-joint coupling
High torsional rigidityVibration absorptionCross joint type+2High torsional rigidityVibration absorptionCross joint typeServo motorStepper motor

Cross-Joint Type Flexible Coupling (XUT)

Compact cross-joint coupling with high torsional stiffness, minimal backlash and symmetric CW/CCW characteristics for servo and stepper drives.

NBK XGT high-gain rubber coupling
Zero backlashHigh torqueVibration absorption+3Zero backlashHigh torqueVibration absorptionHigh-gain typeServo motorStepper motor

High-Gain Rubber Coupling (XGT · XGL · XGS)

Zero-backlash elastomer coupling that combines high torsional stiffness with superior vibration and shock damping, ideal for dynamic servo drives.

NBK XSTS-C stainless-steel slit coupling
Zero backlashCleanroomStainless steel+6Zero backlashCleanroomStainless steelChemical-proofSlit typeVacuumHeat-resistantServo motorStepper motor

Slit Coupling for Cleanroom & Vacuum (XSTS · XWSS · MSXP)

One-piece slit couplings for cleanroom, vacuum and heat-resistant use: zero backlash, low particle generation and excellent chemical and corrosion resistance.

NBK MST beam slit coupling
Zero backlashSlit typeStainless steel+3Zero backlashSlit typeStainless steelHigh torsional rigidityStepper motorServo motor

Beam Slit Type Flexible Coupling (MST · MSTS · MSX)

One-piece spiral-beam slit couplings for precise speed and position control: zero backlash, high torsional stiffness, in aluminium or stainless steel.

NBK MFB metal bellows coupling
Zero backlashBellows typeStepper motor+1Zero backlashBellows typeStepper motorStainless steel

Metal Bellows Flexible Coupling (MFB · MFBS)

Thin-walled metal bellows coupling for exceptional positioning accuracy: zero backlash and constant-velocity rotation with very low reaction forces on bearings.

NBK MJC-CS-RD jaw coupling
High torqueVibration absorptionElectrical insulation+4High torqueVibration absorptionElectrical insulationJaw typeGeneral purpose motorServo motorStepper motor

Jaw Type Flexible Shaft Coupling (MJC · MJS · MJB)

Elastomer-jaw coupling that transmits high torque while absorbing vibration and misalignment: zero backlash with tight-fit sleeves and electrical insulation.

Power transmission

Couplings for general-purpose drives

Robust couplings that transmit torque and damp vibration in transport devices, mixers, ventilators, pumps and dispensers.

NBK MSF serration coupling
Electrical insulationSerration typeVibration absorption+1Electrical insulationSerration typeVibration absorptionGeneral purpose motor

Serration Type Flexible Coupling (MSF)

Simple, cost-effective serration coupling for general-purpose motors: good vibration absorption, misalignment tolerance and electrical insulation.

NBK MOL-C Oldham coupling
High allowable misalignmentSmall eccentric reaction forceOldham type+1High allowable misalignmentSmall eccentric reaction forceOldham typeGeneral purpose motor

Oldham Style Flexible Coupling (MOL)

Three-piece Oldham coupling that compensates large parallel misalignment with small reaction forces: stable, easy to assemble and electrically insulating.

NBK MOP-C cleanroom/vacuum Oldham coupling
CleanroomElectrical insulationHeat-resistant+5CleanroomElectrical insulationHeat-resistantChemical-proofOldham typeVacuumStainless steelGeneral purpose motor

Oldham Coupling for Cleanroom & Vacuum (MOP · MOHS)

Heat-resistant, chemical-proof Oldham couplings with PEEK or VESPEL spacers for cleanroom and vacuum use: high misalignment tolerance and electrical insulation.

Not sure which coupling fits your drive?

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