NBK Japan MBB-32C 12mm to 1/2" Bellows-type Flexible Coupling, High-Precision Bellows Flexible Coupling for Servo Motors and CNC Applications

Regular price $184.99 Sale price$283.00you save $98.01
SKU: MBB-32C-12mm-1-2inch
Coupling Bore 1 Diameter:12mm
Coupling Bore 2 Diameter:1/2 inch
Coupling Length: 46
Coupling Outer Diameter:32
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NBK Japan MBB-32C Bellows-Type Flexible Coupling, 12 mm to 1/2 in bore, 32 mm OD, 46 mm length, zero backlash, high torque
✔️ Bellows-type flexible coupling: 12 mm to 1/2 in bores, 32 mm OD, 46 mm length; zero backlash, high torsional rigidity, handles angular misalignment and end-play.

NBK Japan MBB-32C is a bellows-type flexible coupling designed to connect shafts in CNC machines, robotics, 3D printers, and automation systems. It tolerates angular misalignment, end-play, and eccentricity while delivering zero backlash and high torsional rigidity. Made in Japan and supplied as a single piece, it is ideal for high-torque, precise transmission in tight spaces.

✅ Bore 1: 12 mm (0.47 in)
✅ Bore 2: 1/2 in (12.7 mm)
✅ Length: 46 mm (1.81 in)
✅ Outer diameter: 32 mm (1.26 in)
✅ Zero backlash
✅ High torsional rigidity
✅ High torque transmission
✅ Made in Japan
✅ Pack: 1 piece

💡 What is a bellows-type flexible coupling and when should you use it?

These couplings are handy for precise torque transfer while tolerating shaft misalignment and end-play. Here’s how they help in general use:

  • Absorbs angular misalignment and end-play to protect bearings
  • Zero-backlash torque transmission for precise motion control
  • High torsional rigidity supports high-torque applications
  • Compact, reliable Japanese-made design for long service life

Ideal for CNC machines, robotics, automation systems, and precision drive trains requiring stable performance.

This handy solution improves precision and durability in automated systems.


NBK Japan MBB-32C 12mm to 1/2 inch
Bellows-type Flexible Coupling

NBK Japan MBB-32C 12mm to 1/2 inch Bellows-type Flexible Coupling, this is a bellows type flexible coupling. The bellows allows eccentricity, angularmisalignment, and end-play.

  • Coupling Bore 1 Diameter: 12mm
  • Coupling Bore 2 Diameter: 1/2 inch
  • Coupling Length: 46
  • Coupling Outer Diameter:32
  • Zero Backlash
  • High torsional rigidity
  • High Torque
  • Constant Velocity
  • Simple Design
  • Made in Japan
  • Quantity: One


A L W E F G M Wrench Torque(N-m)
32mm 15.5mm 46mm 22mm 4.25mm 12mm M3 1.5