Complete retrofit packages and OEM control systems

CNC 4th & 5th Axis Retrofit Systems

For CNC end users, rotary table manufacturers and overseas integration partners: complete indexed 4th/5th-axis retrofit packages, YD-1 and CSD700 servo control systems, plus application matching and integration support.

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Complete systems for CNC end users Matched rotary table, servo control, brake circuit, cables and machine interface.

OEM systems for rotary table builders Control architecture selected from table design, ratio, encoder, brake method and load.

Support for integration partners Project registration, selection, quotations, remote commissioning, training and spare parts.

The rotary table works inside the machine enclosure. Compact external control hardware is installed in the CNC electrical cabinet.

Which Type of Project Are You Planning?

Choose the path that matches your role so the supply scope, technical information and commercial support are clear from the beginning.

CNC machine end users

I need a complete 4th or 5th axis retrofit package

A matched project scope for your machine, workpiece and process instead of unrelated components.

4th-axis or 5th-axis CNC rotary table
External servo control system and motor
Brake, cables, interface and commissioning support

Explore Complete Retrofit Packages → CNC rotary table manufacturers

I build rotary tables and need a matched external servo control system

Match YD-1 or CSD700 control architecture to your existing mechanical rotary table design.

Motor, encoder and reduction-system matching
OEM, co-brand or private-label options
Project registration, customer protection and volume support

Discuss an OEM Control System → Overseas integrators and distributors

I want to sell, install and support Yidai systems locally

For partners with CNC machine, electrical integration or industrial service capability.

Referral, authorized distribution and certified integration
Regional project and lead protection
Selection, quotation, commissioning and spare-parts support

View the Integration Partner Program →

Product Categories

Rotary tables, single-axis controllers, probes, and retrofit kits for CNC machine upgrade projects.

YD-1 indexed 4th/5th axis retrofit package with axis-card controller, servo drive and servo motor

YD-1 External 4th/5th Axis Servo Control Package

A complete matched package of servo drive, servo motor and axis-card controller for indexed 4th or 5th axis retrofits on 3-axis CNC machines.

View YD-1 Package

CSD700 Integrated 4th/5th Axis Servo Controller Drive

Second-generation axis-card controller and servo drive in one unit, supporting 400W–1kW for indexed 4th or 5th axis CNC retrofits.

View CSD700 and Installation Videos

RTA-170 4th axis CNC rotary table product

4th Axis Rotary Tables

Single-axis rotary tables for milling centers and machining centers.

Explore 4th Axis Tables

TC series 5th axis CNC rotary table product

5th Axis Rotary Tables

Tilting rotary tables for indexing, multi-face machining, and complex workpieces.

Explore 5th Axis Tables

Core retrofit value

OEM Axis Expansion vs External Indexed-Axis Retrofit

Many factories own capable 3-axis CNC machines. A matched external rotary-axis system can add indexed multi-face machining at typically 40%-50% of the cost of an OEM additional-axis package.

Read the Retrofit Guide

Original servo expansion

Higher cost
Depends on CNC system and machine brand
Often requires service from original supplier
Better for full simultaneous control when required

          External axis retrofit
          Typically 40%-50% of OEM upgrade cost
Good for indexing and many 4th axis jobs
TCP/IP, RS232 and I/O integration options
Native CNC handwheel control on supported configurations

        

Common Applications

Typical indexed rotary applications for manufacturers upgrading reliable 3-axis CNC machines.

Side-hole drilling and milling

Index the workpiece to different angles and reduce repeated clamping on manual fixtures.

Batch parts on older CNC machines

Improve the usefulness of existing equipment without the budget pressure of a new machining center.

Native handwheel rotary positioning

On supported TCP/IP configurations, the original CNC handwheel can jog the rotary axis without a separate pendant.

Real CNC Retrofit Installations

Field evidence from machine setup and commissioning, including rotary-axis operation, cabinet integration and control-system checks.

Real CNC rotary-axis retrofit machining under coolant — Rotary-axis machining during a real CNC setup and commissioning process.

Real CNC electrical cabinet wiring for external rotary-axis retrofit — Electrical-cabinet integration and signal wiring checked before production use.

View Real Installations

Resources for CNC Retrofit Buyers

Selection guides, comparison articles, installation notes, and troubleshooting content for CNC rotary axis retrofit projects.

External 4th axis retrofit video preview

Watch the external 4th axis retrofit workflow

External 4th Axis Retrofit Solution for 3-Axis CNC Machines

Explain when an external controller is a good fit, when original servo expansion is better, and how to choose the right rotary table and control method.

How to choose a CNC rotary table size

Worktable diameter, center height, brake, bore, and load.

RS232 vs I/O for external 4th axis control

Different triggering methods for different CNC systems.

4th axis retrofit checklist

Machine space, workpiece size, controller wiring, and program flow.

FANUC, Mitsubishi, Brother & Siemens compatibility guide

Evaluate the CNC model, interface and electrical conditions before a retrofit.

Tell us your CNC model and workpiece size

Send the machine model and CNC control. We will review compatibility, native handwheel operation, table size and the most practical retrofit scope.

Email: ydcncparts@gmail.com WhatsApp / Phone: +86 135 165 22840

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