---
product_id: 222651822
title: "CNC Rotary Axis 4th Axis with 3 Jaw Chuck,K11-100mm Hollow Shaft Dividing Head Rotational A Axis,with 65mm Tailstock,Reducing Ratio:6:1 for CNC Router Lathe Engraving Milling Machine"
brand: "cnctopbaos"
price: "HK$6981"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/222651822-cnc-rotary-axis-4th-axis-with-3-jaw-chuck-k11
store_origin: HK
region: Hong Kong
---

# Nema23 1.8° stepper motor K11 100mm 3-jaw self-centering chuck 6:1 precision reduction ratio CNC Rotary Axis 4th Axis with 3 Jaw Chuck,K11-100mm Hollow Shaft Dividing Head Rotational A Axis,with 65mm Tailstock,Reducing Ratio:6:1 for CNC Router Lathe Engraving Milling Machine

**Brand:** cnctopbaos
**Price:** HK$6981
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** CNC Rotary Axis 4th Axis with 3 Jaw Chuck,K11-100mm Hollow Shaft Dividing Head Rotational A Axis,with 65mm Tailstock,Reducing Ratio:6:1 for CNC Router Lathe Engraving Milling Machine by cnctopbaos
- **How much does it cost?** HK$6981 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/222651822-cnc-rotary-axis-4th-axis-with-3-jaw-chuck-k11)

## 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

- • **Robust Chuck Grip:** K11 100mm 3-jaw chuck ensures stable, rust-proof clamping from 2mm to 90mm diameters.
- • **Tailstock Stability:** 65mm center height with 50mm stroke and axial locking wrench for maximum workpiece support.
- • **Powerful Stepper Motor:** Nema23 motor delivers 270oz-in torque for smooth, reliable CNC control.
- • **Precision at Every Turn:** Experience ultra-fine 0.3° step angle for flawless 4th axis rotation.
- • **Versatile CNC Compatibility:** Perfect for routers, lathes, milling, and engraving machines—unlock 3D cylindrical and circular machining.

## Overview

The CNCTOPBAOS 4th Axis CNC Rotary Axis features a 6:1 reduction ratio with a 0.3° step angle, a durable K11 100mm 3-jaw self-centering chuck, and a high-torque Nema23 stepper motor. It includes a 65mm center height tailstock with axial locking for enhanced stability, making it ideal for advanced 3D machining on routers, lathes, milling, and engraving machines.

## Description

Package include: 1set 4th axis K11 100mm ( Includes stepper motor and 3 jaw chuck) 1 x 65mm Tailstock Descriptions:Chuck type: K11 100mm three jaw centering chuckCenter height: 65mmTotal height: 115mmAngle: 0.3°/ step Gear box output shaft diameter: 25mmReducing ratio: 6:1(belt deceleration mode)Stepper motor: Nema23 57mm 3A 2-phase 4 wireAccessories: Set of Anti-claw and wrenchesThe fourth axis parameter settings:Mach3 system settings: the pulses required for 1°(Motor 1 lap pulses x Driver fine fraction x Reduction ratio) ÷ 360°For example: 57mm 2- phase stepper motor, fine fraction of 16, reduction ratio 100:1(200 x 16 x 100) / 360=888.88888888)Weihong system settings: 1 pulse along the angle 360°/(Motor 1 lap pulses x Driver fine fraction x Reduction ratio)For example: 57mm 2- phase stepper motor, fine fraction of 16, reduction ratio 100:1360 / (200 x 16 x 100) =0.001125Tailstock type:Center Height: 65mmStretch distance: 50mmTop tip: Activity typeAxial locking wrench for tailstockStepper Motor:Nema23 stepper motor 76mmShaft Diameter: 8 mmShaft length: 25.5mmStep Angle:1.8Current: 3AVoltage: 4.2VTemperature Rise: 80 c maxInsulation Resistance: 100MOhm(500V DC)Holding Torque: 18kg.cm

## Features

- Specifications of 4th Axis: Center Height: 65mm (2.56"); Total Height:; 115mm (4.5"); Angle: 0.3°/Step ; Reduction Ratio: 6:1; Base Material: Aluminum Alloy; Size:210x168x115mm (8.3x6.6x4.5"); Weight: 7.7 KG (17 LB); Inner through hole diameter/shaft hollow diameter is 22 mm (0.86")
- Specifications of Stepper Motor: Phase: 2 Phase; Type: Nema23 Hybrid; Step Angle: 1.8 degree; Current: 3A; Holding torque: 270oz-in 180N.cm; Shat Diameter: 8mm; 4 Lead Wires: A+ to Red ; A- to Green ; B+ to Yellow ; B- to Blue; Motor Size: 57x57x76 mm
- Specifications of MT2 Tailstock: Morse Taper 2 Live Center Movable MT2 Tailstock; Center Height: 65 mm(2.56"); Expansion stroke: 45 mm(1.77"); Stretch distance: 50 mm(1.97"); Top tip: Activity type; With Axial locking wrench for tailstock; Exquisite workmanship,Durable,Stable performance,Sturdy and Wear-resistant; Weight: 2.5 KG(5.5 LB)
- Chuck Type: K11-100 3 Jaw self-centering chuck; Diameter:100mm(3.93"); Max input torque: 60 N.m; Max Speed: 3500 r/min; External jaw clamping range: 30-80mm(1.18-3.15").; Internal jaw clamping range: 2-30mm(0.08-1.18"); Internal jaw jamming range: 30-90mm(1.18-3.54");With 3 Anti-claw and Wrench
- Advantages: Rust proof coating process, stable chuck structure, fine workmanship, solid and practical jaw, excellent process to maximize service life; Applications: The 4th axis can be used for three-dimensional processing of cylinders, bends and circles,cnc router,milling machine,engraving machine and carving machines etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Changzhou Rattm Motor Co.,Ltd |
| Part Number | S23 |
| Item model number | K11-100 |
| Size | 100mm |
| Style | K11-100MM |
| Material | Copper |
| Power Source | Corded Electric |
| Voltage | 500 Volts |
| Item Package Quantity | 1 |
| Cutting Diameter | 100 Millimetres |
| Included Components | Wrench |
| Batteries included? | No |
| Batteries Required? | No |
| Battery description | Corded electric |
| Assembled Diameter | 100 Millimetres |
| Item Weight | 440 g |

## Product Details

- **Brand:** CNCTOPBAOS
- **Voltage:** 500 Volts
- **Product dimensions:** 16.8W x 11.5H centimetres
- **Material:** Copper
- **Item weight:** 440 Grams

## Images

![CNC Rotary Axis 4th Axis with 3 Jaw Chuck,K11-100mm Hollow Shaft Dividing Head Rotational A Axis,with 65mm Tailstock,Reducing Ratio:6:1 for CNC Router Lathe Engraving Milling Machine - Image 1](https://m.media-amazon.com/images/I/61-R86X6ilL.jpg)

## Available Options

This product comes in different **Style Name** options.

## Frequently Bought Together

- CNCTOPBAOS CNC Rotary Axis 4th Axis with 3 Jaw Chuck,K11-100mm Hollow Shaft Dividing Head Rotational A Axis,with 65mm Tailstock,Reducing Ratio:6:1 for CNC Router Lathe Engraving Milling Machine
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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-26*