NBK Japan MJC-14-ERD 4mm to 6.35mm Jaw-type Flexible Coupling

Regular price $120.00 Sale price$250.00you save $130.00
SKU: MJC-14-ERD-4mm-6.35mm
Coupling Bore 1 Diameter:4mm
Coupling Bore 2 Diameter:6.35mm
Coupling Length: 22
Coupling Outer Diameter:14
5-7 days shipping
NBK Japan MJC-14-ERD Jaw-Type Flexible Coupling, 4 mm to 6.35 mm bore, Stainless Steel, Made in Japan, 1 pc
✔️ NBK MJC-14-ERD jaw-type flexible coupling, bore 4 mm to 6.35 mm (0.157 in to 0.25 in), length 22 mm (0.866 in), OD 14 mm (0.551 in), stainless, Made in Japan

The NBK Japan MJC-14-ERD is a jaw-type flexible coupling designed to connect shafts in servo, CNC, and robotics systems. Its bellows design tolerates eccentricity, angular misalignment, and end-play while delivering reliable torque with minimal backlash. Manufactured in Japan from stainless steel, this single-piece coupling offers electrical insulation and a tidy, stout build. Note: Spider color varies with stock.

Coupling Bore 1 4 mm (0.157 in)
Coupling Bore 2 6.35 mm (0.25 in)
Coupling Length 22 mm (0.866 in)
Outer Diameter 14 mm (0.551 in)
Material Stainless steel; electrical insulation
✅ Bore 1: 4 mm (0.157 in); Bore 2: 6.35 mm (0.25 in)
✅ Length: 22 mm (0.866 in); Outer diameter: 14 mm (0.551 in)
✅ Material: Stainless steel; electrical insulation; Made in Japan
✅ Features: bellows absorb eccentricity, angular misalignment, and end-play; zero-backlash at low torque
✅ Fit: tight fit enables transmission with easy assembly of hub and sleeve
✅ Pack size: 1 piece; color varies by stock
✅ Torque: 0.7 N m
💡 What is a jaw type flexible coupling used for in motion systems? These couplings connect shafts while tolerating misalignment and end-play, delivering smooth torque transfer. - Absorbs angular misalignment and end play with bellows - Supports low-backlash torque transmission in moving systems - Handy for servo motors, CNC machines, and automation setups - Easy to install and service in compact layouts This handy, low-backlash coupling helps precise motion control in automation and robotics.
NBK Japan MJC-14-ERD 4mm to 6.35mm
Jaw-type Flexible Coupling

NBK Japan MJC-14-ERD 4mm to 6.35mm Jaw-type Flexible Coupling, this is a Jaw type flexible coupling. The bellows allows eccentricity, angularmisalignment, and end-play.

  • Coupling Bore 1 Diameter: 4mm
  • Coupling Bore 2 Diameter: 6.35mm
  • Coupling Length: 22
  • Coupling Outer Diameter:14
  • Material: Stainless
  • This is a jaw type flexible coupling.
  • Tight Fit enables transmission with zero backlash at low torque.
  • Easy fit allows you to assemble and partition the hub and sleeve smoothly.
  • Excellent flexibility allows eccentricityangular misalignment and twisting vibration to be accepted.
  • It has electrical insulation
  • Made in Japan
  • Coupling Insert Spider Color: Varies according to ex-stock
  • Quantity: One


A L W B C F M Wrench Torque(N-m)
14 7 22 6 1 3.5 M3 0.7