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Description
NBK Japan MBB-40C 5/8" inch to 24mm Bellows-type Flexible Coupling, Zero-Backlash Bellows Flexible Shaft Coupling for Servo and Stepper MotorsNBK Japan MBB 40C Bellows Type Flexible Coupling: 5 8 in to 24 mm bore, zero backlash, high torsional rigidity for servo and stepper motors 5 8\" to 24 mm bore bellows type coupling; length 51 mm (2. 01"), outer diameter 40 mm (1. 57"), zero backlash, high torsional rigidity, CV motion, made in Japan Bore 1 diameter: 5 8" (16 mm) Bore 2 diameter: 24 mm (0. 94") Length: 51 mm (2. 01") Outer diameter: 40 mm (1. 57") Zero backlash High torsional rigidity
NBK Japan MBB-40C Bellows-Type Flexible Coupling: 5/8 in to 24 mm bore, zero-backlash, high torsional rigidity for servo and stepper motors
✔️ 5/8\" to 24 mm bore bellows-type coupling; length 51 mm (2.01"), outer diameter 40 mm (1.57"), zero-backlash, high torsional rigidity, CV motion, made in Japan
✅ Bore 2 diameter: 24 mm (0.94")
✅ Length: 51 mm (2.01")
✅ Outer diameter: 40 mm (1.57")
✅ Zero backlash
✅ High torsional rigidity
✅ High torque capacity
✅ Constant velocity (CV) action
✅ Simple, compact design
✅ Made in Japan
✅ Quantity: One
💡 What is a bellows-type flexible coupling used for in motion control? - It provides a flexible connection between motor and driven shaft, absorbing angular misalignment and end-play while transferring torque with minimal backlash. - It helps maintain accuracy and smooth motion in CNC machines, robotics, and automation. - It is handy for compact drive trains where space is tight but torque needs are high. Using this NBK MBB-40C gives improved motion accuracy and reliability in compact systems.
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4.1 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 3
Cute cup with one little flaw
Color: White, Size: 6.8oz
Very cute /nice little cup - but handle is loose and has to be constantly tightened before using (thats the only gripe)
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Reviewed in the United States on March 9, 2026
★★★★★ 5
Durable, Precise, and Perfect for Coffee on the Go!
Color: Black, Size: 3.4oz
I bought the Mongdio Espresso Measuring Cup as a Father’s Day gift because my husband is always brewing espresso to take with him—and this has become his new favorite tool.
Key Highlights:
Stainless Steel Durability: Unlike the thin glass cups we tried before (which shattered all too easily), this stainless steel model feels rock-solid and built to last.
100 ml / 3.4 oz Capacity: Perfectly sized for a double shot, ensuring you never overflow or waste a drop.
Double Spouts: Makes pouring directly into travel mugs or to-go tumblers a breeze—no drips, no mess.
Wooden Handle: Stays cool to the touch and adds a touch of style at the same time.
Sleek Black Finish: Looks great on any countertop and hides water spots or fingerprints.
Pros
Heavy-duty stainless steel construction
Accurate 100 ml measurement marks
Dual pouring spouts for precision
Cool-touch wooden handle
Cons
Handle can be a bit bulky in small drawers
Black finish may scratch over time if stacked
Final Verdict:
If you want a reliable, spill-free way to measure and pour espresso—especially for mugs on the go—this Mongdio cup is a no-brainer. It’s sturdy, precise, and looks great in any kitchen. Highly recommend!
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Reviewed in the United States on June 20, 2025
★★★★★ 5
Worth the money
Color: White, Size: 6.8oz
Needed tightening but stays together once fully screwed on, great for making and measuring your espresso, good looking too.
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Reviewed in the United States on March 17, 2026
★★★★★ 5
FINALLY! A GOOD ONE!!
Color: Black, Size: 4.1 Ounces, Color: Black, Size: 4.1 Ounces
Okay, so I've tried just about every espresso measuring cup on the market—the thin glass ones that break easily, the thin aluminum ones that are so light weight tney are impossible to handle, the narrow-topped ones that will not allow you to extract a two-spout portafilter drip into one cup, and the bargain-priced ones that the markings disappear on after a month of use and that barely hold a 3 oz. shot.
I ordered the Lunaker 4 oz. espresso shot cup half expecting this to be another disappointment.
What I received is a high quality, well made shot cup that is solidly made, plenty heavy enough, a perfect size, and that looks beautiful. The handle is solid wood and much easier to manage than the too-small loop handle found on most cups.
Those are the Pros. The Cons? There are none. Wish I would have found this one sooner.
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Reviewed in the United States on January 15, 2026
★★★★★ 5
Perfect for precise and stylish measuring
Color: Bright Silver, Size: 4.1 Ounces, Color: Bright Silver, Size: 4.1 Ounces
This small stainless steel measuring cup exceeded my expectations. The material feels sturdy, high-quality, and has a sleek finish. It's also lightweight yet sturdy, making it comfortable to use.
The tapered shape and front spout make pouring liquids easy and spill-free, and the wooden handle adds a beautiful and sophisticated touch. Plus, it stays cool to the touch when used with hot liquids.
It's ideal for measuring coffee, cooking ingredients, or cocktails. Very practical, easy to clean, and doesn't retain odors. In short: a simple yet beautifully designed utensil, useful for everyday use, and of excellent quality. I highly recommend it!
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Reviewed in the United States on December 6, 2025
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