NBK Japan MJC-40-WH jaw type flexible coupling with 3/8 inch to 1/2 inch bores, stainless steel construction, zero backlash design, accepts angular and parallel misalignment, electrically insulated coupling made in Japan

NBK MJC-40-WH Jaw Type Flexible Coupling 3/8 to 1/2
✔️ Stainless Steel Flexible Shaft Coupling Made in Japan

This jaw type flexible coupling is designed to connect two shafts while absorbing misalignment and vibration in precision drive systems. It’s commonly used in CNC machines, automation equipment, servo drives, and industrial motion setups where smooth torque transfer and reliable alignment matter.

Pack size: 1 coupling with jaw insert included.

✅ Jaw type flexible coupling with tight fit design
✅ Bore 1 size is 3/8 in 9.525 mm
✅ Bore 2 size is 1/2 in 12.7 mm
✅ Stainless steel hubs for strength and corrosion resistance
✅ Zero backlash at low torque for accurate motion control
✅ Accepts eccentricity, angular misalignment, and axial movement
✅ Helps absorb twisting vibration and reduce shock loads
✅ Electrically insulating jaw insert
✅ Made in Japan by NBK
✅ Jaw insert spider color may vary based on stock

Coupling Dimensions
All dimensions shown in millimeters and inches

Outer Diameter A 40.0 mm 1.575 in
Overall Length L 66.0 mm 2.598 in
Hub Length B 12.0 mm 0.472 in
Chamfer C 2.0 mm 0.079 in
Bore Depth F 12.5 mm 0.492 in

Bore Sizes
Bore 1 9.525 mm 0.375 in
Bore 2 12.7 mm 0.500 in

Fasteners and Torque
Screw Size M5
Wrench Torque 4 Nm

💡 Why are jaw type flexible couplings used in automation and CNC systems?
Jaw type couplings are widely used when precision and vibration control are both required.

• They allow shaft misalignment without transferring stress to bearings

• The flexible insert dampens vibration and reduces system noise

• Tight fit construction supports accurate torque transmission

This NBK jaw coupling is a handy choice for clean power transfer, smoother motion, and dependable long-term performance in precision mechanical applications.