RTA-210

RTA-210 CNC Rotary Table for External 4th Axis Retrofit

The RTA-210 is a single-axis CNC rotary table with a 210 mm worktable for indexed fourth-axis machining on existing 3-axis machining centers. It is intended for parts that require multiple faces, bolt circles, radial drilling or repeatable angular positioning without frequent manual re-clamping.

Its hydraulic clamping arrangement and 210 mm table size make it appropriate for retrofit projects where the machine travel, fixture space, workpiece weight and CNC interface have been checked in advance. An external controller can be selected with the rotary table when an OEM fourth-axis expansion is impractical.

Key Specifications

Retrofit Planning Checklist

• Check the machine-table load, usable table area and spindle clearance.
• Provide the workpiece diameter, weight, fixture drawing and required indexing positions.
• Confirm the CNC system and available communication method before selecting the controller.
• Plan the hydraulic, servo, brake and electrical-cabinet arrangement as one package.

Frequently Asked Questions

What is the difference between RTA-170 and RTA-210? The RTA-210 provides a larger 210 mm worktable and 160 mm center height. The correct choice depends on workpiece size, fixture clearance and machine capacity.

Can Yidai help assess compatibility? Yes. Send the machine model, CNC system, cabinet photos and workpiece information through our contact page for an initial evaluation.

Related resources: 4th axis CNC rotary tables, external axis controllers, and external 4th axis retrofit solutions.