NBK Japan MFBS-12 4mm to 4mm Bellows-type Flexible Coupling Stainless Steel, Zero-Backlash Bellows Flexible Shaft Coupling for Servo and Stepper Motors

Regular price $120.00 Sale price$250.00you save $130.00
SKU: MFBS-12-4mm-4mm
Coupling Bore 1 Diameter:4mm
Coupling Bore 2 Diameter:4mm
Coupling Length: 23.5
Coupling Outer Diameter:12
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NBK MFBS-12 Bellows-Type Stainless Steel Flexible Coupling - 4 mm to 4 mm bore, pack size: 1 unit, Zero-Backlash for Servo & Stepper Motors
✔️ Bore 4 mm to 4 mm, length 23.5 mm, outer Ø 12 mm, stainless steel, zero-backlash, high torsional rigidity, made in Japan, pack size: 1 unit

NBK MFBS-12 is a bellows-type flexible coupling designed to connect servo and stepper motors to driven shafts in automation like CNCs and 3D printers. Pack size: 1 unit. It compensates eccentricity, angular misalignment, and end-play while delivering zero-backlash torque and high torsional rigidity in compact spaces.

✅ Bore: 4 mm to 4 mm (0.157 in to 0.157 in)
✅ Length: 23.5 mm (0.925 in)
✅ Outer diameter: 12 mm (0.472 in)
✅ Material: Stainless steel
✅ Features: Zero-backlash, high torsional rigidity, constant velocity
✅ Made in Japan, Quantity: 1
💡 What is a bellows-type flexible coupling used for in precision servo and stepper motor systems? This helps explain why these couplings are chosen for exact motion control. - Improves alignment tolerance and reduces end-play in compact drives - Maintains consistent velocity for precise positioning - Reduces drivetrain stress from angular and radial misalignment - Handy for small automation tasks like hobby CNCs, 3D printers, and robotics This setup delivers reliable, precise motion in tight spaces, boosting performance and uptime.
NBK Japan MFBS-12 4mm to 4mm
stainless steel Bellows-type Flexible Coupling

NBK Japan MFBS-12 4mm to 4mm Bellows-type Flexible Coupling stainless, this is a bellows type flexible coupling. The bellows allows eccentricity, angularmisalignment, and end-play.

  • Coupling Bore 1 Diameter: 4mm
  • Coupling Bore 2 Diameter: 4mm
  • Coupling Length: 23.5
  • Coupling Outer Diameter:12
  • Material: Stainless Steel
  • Zero Backlash
  • High torsional rigidity
  • High Torque
  • Constant Velocity
  • Simple Design
  • Made in Japan
  • Quantity: One


A L W E F M Wrench Torque(N-m)
12mm 7.5mm 23.5mm 7mm 2.5mm M2.9mm 0.5