Image High Gain Type Couplings Disk Type Couplings Jaw Type Couplings Slit Type Couplings Oldham Type Couplings
Name High Gain Type Disk Type Jaw Type Slit Type Oldham Type
Feature For High Gain,High Vibration Absorption, Zero Backlash High Torsional Stiffness,
High Torque,
Zero Backlash
High Torque,
Vibration Absorp- tion,
Press Fitted Sleeve
Single-Piece Construction,
Zero Backlash,
High Torsional Stiffness
High Allowable Misalignment,
Small Eccentric Reaction Force
Diameter φ15 ~ φ68 φ15 ~ φ104 φ14 ~ φ95 φ8 ~ φ63 φ6 ~ φ70
Torque 0.5N・m ~ 65N・m 0.42N・m ~ 280N・m 0.7N・m ~ 560N・m 0.1N・m ~ 35N・m 0.08N・m ~ 176N・m
List XGL2 XGL-C XGS XGS2 XGS-C XGS-CS XGT XGT2 XGT-C XGT-CS MDS MDW MHS MHW XBS-C XBSS-C XBW-C XBWS-C XHS-C XHW-C XHW-C-L MJB-BL MJB-EBL MJB-EGR MJB-ERD MJB-EWH MJB-GR MJB-RD MJB-WH MJC-BL MJC-CS-BL MJC-CS-EBL MJC-CS-EGR MJC-CS-ERD MJC-CS-EWH MJC-CS-GR MJC-CSK-BL MJC-CSK-EBL MJC-CSK-EGR MJC-CSK-ERD MJC-CSK-EWH MJC-CSK-GR MJC-CSK-RD MJC-CSK-WH MJC-CS-RD MJC-CS-WH MJC-EBL MJC-EGR MJC-ERD MJC-EWH MJC-GR MJC-K-BL MJC-K-EBL MJC-K-EGR MJC-K-ERD MJC-K-EWH MJC-K-GR MJC-K-RD MJC-K-WH MJC-RD MJC-WH MJS-CS-BL MJS-CS-EBL MJS-CS-EGR MJS-CS-ERD MJS-CS-EWH MJS-CS-GR MJS-CSK-BL MJS-CSK-EBL MJS-CSK-EGR MJS-CSK-ERD MJS-CSK-EWH MJS-CSK-GR MJS-CSK-RD MJS-CSK-WH MJS-CS-RD MJS-CS-WH MST MST-C MST-K MSTS MSTS-C MSTS-K MSX MSX-C MSXP-C MSXP-C-W-SP MWS MWS-C MWSS MWSS-C XSTS-C XWSS-C MOHS-C MOL MOL-C MOM MOM-C MOM-CK MOM-K MOP-C MOR MOR-C MOR-CK MOR-K MOS MOS-C

Image Cross Joint Type Couplings Rigid Type Couplings Bellows Type Couplings Serration Type Couplings Flexus
Name Cross Joint Type Rigid Type Bellows Type Serration Type Flexus
Feature Small Eccentric Reaction Force,
High Torsional Stiffness,
Vibration Absorption
Single-Piece Construction, Standardization of Two Different End Bores Constant Velocity,
Zero Backlash,
Simple
Low Cost,
High Allowable Misalignment,
Vibration Absorption
Multifunctional spring action parts made from a variety of materials.
Diameter φ15 ~ φ40 φ16 ~ φ65 φ12 ~ φ40 φ16 ~ φ32 -
Torque 0.3N・m ~ 6N・m 0.3N・m ~ 35N・m 0.07N・m ~ 10N・m 0.5N・m ~ 3N・m -
List XUT-C MLR-C MLRS-C MLRS-V MLR-V MRG MRG-C MRGS MRGS-C MRGS-W MRG-W XRP MBB-C MFB MFB-C MFBS MFBS-C MWBS MSF flexus

About Couplings

Coupling is a component used to connect a drive shaft and a driven part, for example, a motor shaft and a ball screw for the purpose of transmitting the torque.
The main roles of a coupling include the following:
・Connecting drive shafts of motors, etc. with driven shafts of ball screws etc. to transmit power.
・Providing tolerance for errors (misalignment) between the cores of the drive shaft and the driven shaft.
・Absorbing equipment impacts and vibration.
・Improving equipment performance.
Also, Coupling introduces mechanical flexibility providing misalignment for the shafts. As a result, this coupling flexibility can prevent uneven wear, vibration, and other mechanical troubles due to misalignment.

What is Flexible Shaft Coupling?

Flexible Shaft Coupling is rotation transmission component which allows eccentricity, angular and runout between shafts. Accurate centering (alignment adjustment) is required to match shafts by having flexibility and deflection, misalignment can be absorbed.

NBK's Stainless Steel Couplings

As a specialist manufacturer, NBK offers an extensive line-up on stainless steel couplings. We provide all-stainless steel couplings suited to the usage, with disk-type, slit-type, bellows-type, rigid-type and more. Depending on coupling type,  Materials vary such as SUS316L, SUS304, SUS303 and so on.

Our History as a Coupling Manufacturer

As a coupling manufacturer, NBK succeeded in the field of precision miniature shaft couplings.  Beginning with technology development for single-piece construction slit-type couplings, we successfully followed to develop all-stainless steel couplings. At that time, NBK couplings were well matched to the control motors and our marketshare was rapidly increased.  We continued to develop jaw-type, bellows-type, disk-type and more to meet our customers' needs and developing peripheral devices such as servo motors, stepper motors, and encoders we focused on high frequency response, hunting prevention, improving gain, shortening stabilization time, zero backlash.  As a result, NBK developed XG Series, high-gain rubber type couplings based on cutting edge control theory which has been introduced as a new generation type coupling in motion control industry.

Types of NBK's Couplings

An extensive coupling line-up NBK offers is the fruit of experiences and expertise accumulated as a coupling manufacturer. The line-up includes: XG Series high gain type couplings that meet requirements of the latest fast response servo motors, Disk-type XHW boasting the highest rigidity ever MS Series having integrally structured slits best suited for stepping motors, cross joint XUT couplings that reduce loads and reaction forces to bearings, Oldham MOR with superior cost effectiveness, and rigid XRP couplings that achieved exceptional high precision. Select best suited coupling from NBK's broad line-up that meets your specifications.


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NBK America LLC

9:00 to 17:00 on weekdays, Eastern Standard Time

Asia and Europe

Nabeya Bi-tech Kaisha

8:00 to 17:00 on weekdays, Japan Standard Time