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Description
NBK Japan MBB-40C 1/4" to 17mm Bellows-type Flexible Coupling, Zero-Backlash Bellows Flexible Shaft Coupling for Servo and Stepper MotorsNBK Japan MBB 40C Bellows Type Flexible Coupling, 1 4" to 17 mm bore, zero backlash, high torque, for servo and stepper motors. Pack size: One 1 4" (6. 35 mm) to 17 mm bore, length 51 mm (2. 01 in), outer 40 mm (1. 57 in), zero backlash, high torsional rigidity, high torque for servo and stepper motors. Bore: 1 4" (6. 35 mm) to 17 mm Length: 51 mm (2. 01 in) Outer diameter: 40 mm (1. 57 in) Zero backlash with high torsional rigidity High torque for
NBK Japan MBB-40C Bellows-Type Flexible Coupling, 1/4" to 17 mm bore, zero-backlash, high torque, for servo and stepper motors. Pack size: One
✔️ 1/4" (6.35 mm) to 17 mm bore, length 51 mm (2.01 in), outer Ø40 mm (1.57 in), zero-backlash, high torsional rigidity, high torque for servo and stepper motors.
✅ Length: 51 mm (2.01 in)
✅ Outer diameter: 40 mm (1.57 in)
✅ Zero-backlash with high torsional rigidity
✅ High torque for precise servo/stepper motion
✅ Bellows-type design absorbs eccentricity and angular misalignment
✅ Made in Japan, NBK
✅ Pack size: One
💡 What is a bellows-type flexible coupling used for in servo and stepper motor drives for precise positioning? This coupling transmits rotation while accommodating shaft misalignment. - It compensates angular and axial misalignment to protect bearings - It maintains constant velocity to reduce wear and vibration - It handles high torque in a compact, flexible form - It’s handy for CNC, robotics, and automation projects This handy coupling improves accuracy and extends motor life in demanding motion tasks.
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4.8 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 4
Pretty shelves for small space
Size: 17 Inch, Color: Natural
Good quality shelves and easy to install once I used my own stronger anchors and screws. The ones provided were too weak and made the shelf unstable. I had to patch several holes in my wall before installing them correctly. If they had provided better quality anchors I would have rated it 5 stars. Still very happy with my purchase.
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Reviewed in the United States on July 12, 2025
★★★★★ 1
Flimsy and doesn’t hold weight
Size: 17 Inch, Color: Natural, Size: 17 Inch, Color: Natural
Do not buy this. The frame this comes with is so small and flimsy. I didn’t even have anything on the shelves yet and they were falling off the wall. The wood is a beautiful color but the quality is awful.
I had different floating shelves on the same wall and I included a picture of the thick metal frame those came with, also from Amazon to show how flimsy this brand is.
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Really nice shelves well-made
Size: 30 Inch, Color: Walnut, Size: 30 Inch, Color: Walnut
I recently installed a set of floating wooden shelves above my kitchen sink, and they have completely transformed the space. The natural wood grain adds warmth and character, making my kitchen feel more open and inviting. The shelves are sturdy and well-made, supporting everything from dishware to small plants and decorative items without any sagging.
Installation was straightforward, with the included hardware making it easy to mount them securely. I was pleasantly surprised by how well they hold weight while maintaining a sleek, minimalistic look. The floating design gives a clean, uncluttered aesthetic, which is exactly what I was looking for.
Functionally, they’ve made a huge difference. I can now keep everyday essentials like mugs and spices within easy reach while freeing up valuable counter space. They’re also a great alternative to upper cabinets, preventing the area above my sink from feeling closed in.
Overall, these floating wooden shelves are both practical and stylish. Whether you’re looking to add storage or just enhance your kitchen’s design, they’re a fantastic option. I highly recommend them for anyone wanting a simple yet impactful upgrade to their space!
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Reviewed in the United States on February 13, 2025
★★★★★ 3
Look nice, not sturdy or supportive
Size: 17 Inch, Color: Dark Blue
The color and thickness of the shelf is great. Very easy to install. But the wall mount portion is cheaply made and doesn’t support the shelf as well as it should. Once mounted the shelf leans forward and isn’t sturdy. After mounting, I found my items had slid off end up on the floor.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
The color is beautiful
Size: 17 Inch, Color: Dark Blue
These are beautiful! I bought them for my Grandsons Baseball room. We haven’t put them up yet. They will be a great addition to his red, white, and blue baseball room!
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Reviewed in the United States on May 18, 2026