Couplings (Shaft Couplings)
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| Name | High Gain Couplings | Disc Couplings | Jaw Couplings | Beam Couplings | Oldham Couplings | Cross Joint Couplings | Rigid Couplings | Bellows Couplings | Serration Couplings |
| 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 |
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 |
| Price | From 42.20 USD | From 55.69 USD | From 57.96 USD | From 28.15 USD | From 21.22 USD | From 117.86 USD | From 17.09 USD | From 37.77 USD | From 22.24 USD |
| Diameter | φ15 ～ φ68 | φ10 ～ φ104 | φ14 ～ φ95 | φ8 ～ φ63 | φ6 ～ φ73.5 | φ15 ～ φ40 | φ16 ～ φ65 | φ12 ～ φ40 | φ16 ～ φ32 |
| Torque | 0.5N・m ～ 65N・m | 0.25N・m ～ 280N・m | 0.7N・m ～ 560N・m | 0.02N・m ～ 35N・m | 0.08N・m ～ 176N・m | 0.3N・m ～ 6N・m | 0.3N・m ～ 35N・m | 0.07N・m ～ 10N・m | 0.5N・m ～ 3N・m |
| List | XGHW-C 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 XGHW-C XHS-C XHW-AC 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 | MSH 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 | MOC MOC-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 MOT MOT-C | 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 |
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.
