This used Ichikawa RCB-402 rotary surface grinder from Japan is designed for high-precision flat grinding of large round and special-shaped parts. The machine features a hydrostatic rotary table and hydrostatic front/back feed guideway, offering stable movement, strong rigidity, and excellent grinding accuracy.

On-site test data shows a φ600 mm workpiece measured at 12 points with only about 2 μm variation, making this pre-owned Japanese grinder a strong choice for precision machining workshops looking for accuracy at a lower investment cost.

Technical Specifications

Item	Specification
Machine Type	Horizontal Spindle Rotary Surface Grinder
Brand	Ichikawa / Ichikawa Seisakusho
Model	RCB-402
Origin	Japan
Machine Condition	Used / Pre-Owned
Delivery Document Date	2007
Table / Chuck Type	Rotary magnetic chuck
Magnetic Chuck Diameter	φ1016 mm
Splash Cover Swing	φ1100 mm
Table Rotation Speed	10–40 min⁻¹, inverter controlled
Table Rotation by Foot Switch	Approx. 5 min⁻¹
Grinding Wheel Size	φ510 × 50 × φ203.2 mm
Grinding Wheel Spindle Speed	700–1750 min⁻¹, inverter controlled
Wheel Peripheral Speed	1980 m/min
Wheel Head Vertical Travel	570 mm
Vertical Rapid Feed Speed	300 mm/min
Vertical Manual Feed, 1 Division	0.001 mm
Vertical Manual Feed, 1 Revolution	0.1 mm
Manual Feed Ratio	×1, ×10
Automatic Downfeed Range	0.001–0.099 mm/turn
Wheel Head Front/Back Travel	650 mm
Front/Back Feed Speed	150–1500 mm/min
Front/Back Manual Feed, 1 Division	0.001 mm
Front/Back Manual Feed, 1 Revolution	0.1 mm
Power Supply	AC 3-phase 200V, 60Hz
Operation Power	AC single-phase 100V / DC 24V
Electrical Capacity	37 kVA
Machine Height	2880 mm
Required Floor Space	3840 × 3770 mm
Maximum Floor Space	4230 × 3770 mm
Machine Weight	Approx. 13,200 kg
Main Electrical Components	Mitsubishi / FANUC components
Standard Accessories	Magnetic chuck, magnetic chuck controller, grinding wheel flange, balancing arbor, foot switch, standard tools and toolbox
Special Features	Wheel spindle variable speed, rotary table speed display, wheel spindle lubrication/cooling system, digital scale automatic infeed device, rough/fine grinding control

Accuracy & Inspection Highlight

The machine was tested on a φ600 mm workpiece. Parallelism and flatness were measured at 12 points, with readings around 39.959–39.961 mm. The measured variation is approximately 2 μm, showing strong grinding stability for precision flat surface finishing.

Used Industrial Equipment for Sale

Featured Used Machines

Used Ichikawa RCB-402 Rotary Surface Grinder from Japan