Used Okamoto UGM-3100 CNC Cylindrical Grinder

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Product Highlight

Used Okamoto UGM-3100 is a Japanese CNC universal cylindrical grinding machine designed for precision OD, ID, face, taper and stepped grinding. With 1,000 mm between centers, a 320 mm swing, servo-controlled feed axes and flexible swiveling capability, it is a practical choice for precision shaft, sleeve, spindle and bore grinding applications.

Product Description

Used Okamoto UGM-3100 CNC universal cylindrical grinder made in Japan, designed for precision OD, ID, face, taper and stepped grinding. With servo-controlled longitudinal and cross feeds, a 30° swiveling B-axis and a 90° swiveling workhead, this machine offers flexible grinding capability for shafts, sleeves, precision tooling and other cylindrical components.

Technical Specifications

Specification	Details
Machine Type	Used CNC Internal & External Cylindrical Grinder
Brand	Okamoto
Model	UGM-3100
Country of Origin	Japan
CNC Control	FANUC Series-TB*
Maximum Grinding Length	1,150 mm
Distance Between Centers	1,000 mm
Center Height	160 mm
Swing / Grinding Diameter	320 mm
Maximum Grinding Wheel Size	Ø355 × 50 mm
Maximum Grinding Wheel Peripheral Speed	2,000 m/min
Grinding Wheelhead Motor	7.5 HP*
B-Axis Swivel	Up to 30°
Workhead Swivel	Up to 90°
Feed Type	Servo-Controlled Longitudinal & Cross Feed
Grinding Functions	OD, ID, Face, Angular, Taper & Step Grinding
Machine Dimensions	4,243 × 2,490 × 1,860 mm
Machine Weight	Approx. 5,600 kg
Condition	Used

Suitable Applications

This used Okamoto CNC cylindrical grinder is particularly suitable for manufacturers handling precision shaft and bore components.

Typical applications include:

Motor shafts and spindle shafts
Transmission and gearbox shafts
Bearing journals and bearing seats
Hydraulic shafts and piston components
Pump shafts
Precision sleeves and bushings
Stepped shafts
Tapered shafts
Internal bores
Shoulders and end faces
Tooling components
Machine tool spindle components
General precision cylindrical parts

FAQ

What is the maximum workpiece length on this machine?

The machine has a 1,000 mm distance between centers and a stated maximum grinding length of approximately 1,150 mm, depending on the actual setup and grinding operation.

Can this grinder machine shoulders, tapers and stepped shafts?

Yes. The machine features a swiveling B-axis of up to 30° and a swiveling workhead, allowing angular approach, face grinding, taper grinding and stepped cylindrical grinding.

Is this Okamoto UGM-3100 suitable for long precision shafts?

It is suitable for many medium-to-long shaft applications because it offers a 1,000 mm distance between centers, 160 mm center height and approximately 320 mm swing capacity. Final suitability should be checked against the diameter, length, weight and accuracy requirements of your workpiece.