---
product_id: 178656928
title: "CNCTOPBAOS 3Pcs 8x10mm Plum Jaw Shaft Coupling Servo Stepper Motor Coupler | 8mm to 10mm Aluminum Jaw Spider Couplers, D25L30, Aluminum,Zero Backlash For NEMA17/23,CNC Router Milling Machine,3D Printer"
brand: "cnctopbaos"
price: "¥4434"
currency: JPY
in_stock: true
reviews_count: 4
category: "Cnctopbaos"
url: https://www.desertcart.jp/products/178656928-cnctopbaos-3pcs-8x10mm-plum-jaw-shaft-coupling-servo-stepper-motor
store_origin: JP
region: Japan
---

# Zero backlash, tight grip 8mm to 10mm bore precision fit Durable aluminum + vibration-absorbing polyurethane CNCTOPBAOS 3Pcs 8x10mm Plum Jaw Shaft Coupling Servo Stepper Motor Coupler | 8mm to 10mm Aluminum Jaw Spider Couplers, D25L30, Aluminum,Zero Backlash For NEMA17/23,CNC Router Milling Machine,3D Printer

**Brand:** cnctopbaos
**Price:** ¥4434
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your motion game with precision and power — don’t get left behind!

## Quick Answers

- **What is this?** CNCTOPBAOS 3Pcs 8x10mm Plum Jaw Shaft Coupling Servo Stepper Motor Coupler | 8mm to 10mm Aluminum Jaw Spider Couplers, D25L30, Aluminum,Zero Backlash For NEMA17/23,CNC Router Milling Machine,3D Printer by cnctopbaos
- **How much does it cost?** ¥4434 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/178656928-cnctopbaos-3pcs-8x10mm-plum-jaw-shaft-coupling-servo-stepper-motor)

## Best For

- cnctopbaos enthusiasts

## Why This Product

- Trusted cnctopbaos brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Engineered Fit:** 0.02mm bore tolerance ensures flawless shaft alignment and zero slip.
- • **Vibration-Dampening Design:** Polyurethane spider cushions reduce noise and protect your motor under high-speed loads.
- • **Quick & Secure Installation:** Clamping screws enable fast, tool-free mounting with a firm, no-slip hold.
- • **Robust Aluminum Alloy Build:** High-grade aluminum offers superior hardness and wear resistance for long-lasting performance.
- • **Universal Motor Compatibility:** Perfectly fits NEMA 17 & 23 stepper and servo motors for versatile DIY and industrial use.

## Overview

The CNCTOPBAOS 3-piece 8x10mm aluminum jaw shaft coupler set delivers high-precision, zero-backlash power transmission for stepper and servo motors. Engineered with a durable aluminum body and vibration-absorbing polyurethane spider, it ensures quiet, reliable operation in 3D printers, CNC machines, and DIY projects. Compatible with common NEMA 17 and 23 motors, it offers quick installation and a tight, slip-free fit for professional-grade performance.

## Description

CNCTOPBAOS 3Pcs 8x10mm Shaft Coupling Servo/Stepper Motor Jaw Shaft Coupler 8mm to 10mm Aluminum Jaw Spider Plum Coupling D25L30 Connector for 3D Printer/DIY Encoder/CNC Machine: desertcart.com: Industrial & Scientific

Review: As Described - Product as described
Review: Save yourself some time - For a 3d printer or some other low torque application this would probably be ok. You can not tighten these enough to get a good clamp. The threads just strip right out. I ordered a package of three and broke the threads out with almost no force on two of them. I had a 6-32 tap so I was able to tap the threads a little bigger and that is holding for now but I don’t trust them for my application (CNC router). Save yourself some time and money and get yourself some higher quality ones.

## Features

- 8mm to 10mm Jaw Shaft Coupling: This package includes 3 plum shaft couplers with 8mm to 10mm bore, overall dimension D25L30 (25mm outer diameter, 30mm total length, model 8x10-25x30mm). It fully meets your needs for shaft power transmission, whether for daily equipment replacement, DIY project assembly, or small-batch production
- Durable Aluminum Alloy and Polyurethane Build for Long Service Life: The main body of this spider coupler is made of high-grade aluminum alloy, featuring superior hardness, excellent wear resistance and stable performance for long-term use. The built-in high-quality polyurethane spider cushion effectively absorbs vibration, reduces operating noise, and protects your drive components from impact damage during high-speed rotation
- Zero Backlash and High Precision Machining: Precision machined with a bore tolerance of 0.02mm, this flexible shaft coupler ensures a tight, non-slip fit with the mating shaft. Its professional zero-backlash structure eliminates transmission errors, provides outstanding responsive performance, and maintains consistent motion accuracy even during long-term high-speed operation
- Versatile for Light to Medium Duty Applications: This aluminum jaw coupling is designed for light to medium duty power transmission scenarios. It is widely used in CNC machines, 3D printers, DIY encoders, intelligent logistics equipment, textile machinery, printing equipment, metallurgical equipment, and other automation systems, offering a reliable shaft connection solution
- Wide Motor Compatibility: Equipped with clamping screws, this stepper motor coupler can be quickly and firmly locked onto the shaft without slipping, enabling easy installation and disassembly without complex tools. It is engineered to be compatible with NEMA 17 and NEMA 23 servo motors and stepper motors perfectly matching your common drive equipment

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B082TT7B84 |
| Best Sellers Rank | #144,136 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #23 in Flexible Spider Couplings |
| Brand | CNCTOPBAOS |
| Color | red |
| Compatible Groove Diameter | 8 Millimeters |
| Customer Reviews | 4.6 out of 5 stars 55 Reviews |
| Drive Style | spider |
| Exterior Finish | Aluminum |
| Fastener Type | Coupling |
| Finish Types | Unfinished |
| Grade Rating | commercial |
| Inside Thread Size | M8 |
| Item Diameter | 10 Millimeters |
| Manufacturer | Changzhou Rattm Motor Co.,Ltd |
| Material | Aluminum |
| Material Type | Aluminum |
| Metal Type | Aluminum |
| Model | B23 |
| Number of Pieces | 3 |
| Part Number | B23 |
| Screw Head Style | Flat |
| Set Name | 3 |
| Size Name | 10mm x 8mm |
| Thread Class | Class 2A |
| Thread Coverage | Partially Threaded |
| Thread Size | M8 |
| Thread Style | Right Hand |
| Thread Type | Iso Metric |
| UPC | 681385631395 |

## Product Details

- **Material:** Aluminum
- **Fastener Type:** Coupling
- **Exterior Finish:** Aluminum
- **Color:** red
- **Metal Type:** Aluminum

## Images

![CNCTOPBAOS 3Pcs 8x10mm Plum Jaw Shaft Coupling Servo Stepper Motor Coupler | 8mm to 10mm Aluminum Jaw Spider Couplers, D25L30, Aluminum,Zero Backlash For NEMA17/23,CNC Router Milling Machine,3D Printer - Image 1](https://m.media-amazon.com/images/I/41AQCMNjqKL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ As Described
*by A***R on March 12, 2025*

Product as described

### ⭐ Save yourself some time
*by J***N on January 19, 2022*

For a 3d printer or some other low torque application this would probably be ok. You can not tighten these enough to get a good clamp. The threads just strip right out. I ordered a package of three and broke the threads out with almost no force on two of them. I had a 6-32 tap so I was able to tap the threads a little bigger and that is holding for now but I don’t trust them for my application (CNC router). Save yourself some time and money and get yourself some higher quality ones.

### ⭐ Way too weak
*by S***T on February 17, 2022*

Doesn't clamp tight at all before stripping. There is only one clamping screw on each end, no set screws.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-10*