Used SHIGIYA GPL-30 CNC Cylindrical Grinder

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Product Highlight

Used SHIGIYA GPL-30 is a Japanese CNC cylindrical grinder built for precision external grinding applications. This used machine combines FANUC CNC control, fine infeed capability and a reported grinding accuracy within 0.5 μm, making it suitable for manufacturers producing precision shafts, spindle components and other high-tolerance cylindrical parts. For buyers seeking a dependable used Japanese CNC OD grinder, it offers a practical balance of precision, brand recognition and acquisition cost.

Product Description

Used SHIGIYA GPL-30 CNC cylindrical grinder from Japan is equipped with a FANUC Series 21i-TB CNC control and has seen relatively low operating use. With reported grinding accuracy within 0.5 μm, it is a strong value option for manufacturers requiring high-precision OD grinding without the investment required for a new Japanese cylindrical grinder.

Designed for accurate and repeatable grinding of shafts, spindles and other rotational components, this pre-owned SHIGIYA combines proven Japanese machine-tool construction with reliable FANUC CNC control.

Technical Specifications

Specification	Details
Manufacturer	SHIGIYA
Model	GPL-30
Machine Type	CNC Cylindrical Grinder / CNC OD Grinder
Condition	Used / Pre-owned
Country of Origin	Japan
CNC Control	FANUC Series 21i-TB
Grinding Application	External Cylindrical / OD Grinding
Reported Grinding Accuracy	Within 0.5 μm
Table Grinding Feed Speed	0–10,000 mm/min
Table Rapid Feed Speed	0–1,260 mm/min
Rapid Feed Steps	16
Minimum Table Increment	0.0001 mm/pulse
Grinding Feed Override	0–150%
Feed Override Increment	10%
Table Feed Servo Motor	1.0 kW AC Servo
Tailstock Type	Automatic Center-Adjusting Tailstock
Tailstock Stroke	125 mm
Tailstock Spindle Travel	125 mm
Tailstock Center Taper	MT No.4
Manual Movement Distance	270 mm, including rapid feed
Rapid Feed Travel	40 mm
Rapid Traverse Speed	0–10,000 mm/min, 4 steps
Wheelhead Rapid Feed Speed	0–2,520 Ømm/min, 16 steps
Minimum Infeed Increment	Ø0.0001 mm/pulse
Infeed Override	0–150%, in 10% increments
Total Automatic Infeed	Ø99.999 mm
Rough Automatic Infeed Rate	Ø0.01–9.99 mm/min
Rough Grinding Spark-Out Adjustment	0–99.9 revolutions
Finish Automatic Infeed Amount	Ø0.001–0.099 mm
Finish Grinding Spark-Out Adjustment	0–99 passes
Infeed Servo Motor	0.9 kW AC Servo
Workhead Type	GP-Type Dead Spindle / Fixed Workhead
Workhead Swivel Angle	0° fixed
Workhead Speed	15–600 min⁻¹, continuously variable
Workhead Taper	MT No.4
Workhead Motor	1.5 kW AC Servo

Note: Specifications are based on the information supplied with this particular used machine. Actual installed configuration, dimensions, accessories and achievable grinding accuracy should be confirmed during inspection or test grinding before purchase.

SHIGIYA continues to manufacture the GPL family of CNC cylindrical grinders; its current GPL-30B series is described by the manufacturer as a table-traverse CNC cylindrical grinder with simultaneous X- and Z-axis control.

Applications & Suitable Industries

Used SHIGIYA GPL-30 CNC cylindrical grinding machine is well suited to precision manufacturers that need tight dimensional control and consistent external diameter finishing.

Typical applications include precision shaft OD grinding, motor and rotor shaft finishing, machine-tool spindle grinding, hydraulic and pneumatic component finishing, bearing-related components, automotive transmission shafts, precision tooling, mold and die components, repair and rebuilding operations, and small-to-medium batch production.

It can be particularly attractive to workshops that want to add Japanese high-precision cylindrical grinding capability while controlling capital expenditure compared with purchasing a new CNC grinder.

SHIGIYA lists its GPL-series cylindrical grinders for applications including automotive drivetrain, electrical machinery and tooling-related manufacturing.

FAQ

Which CNC control is installed on this SHIGIYA GPL-30?

The machine is equipped with a FANUC Series 21i-TB CNC control, a widely used FANUC platform commonly found on Japanese CNC grinding equipment.

Can this used SHIGIYA GPL-30 achieve 0.5 micron grinding accuracy?

The supplied machine information reports grinding accuracy within approximately 0.5 μm. As with any used precision grinder, actual achievable accuracy depends on machine condition, setup, grinding wheel, workpiece, dressing conditions and operating environment. A test grind can be arranged to verify performance before purchase.

What parts are suitable for grinding on the GPL-30?

The machine is primarily suited to high-precision external cylindrical grinding of shafts, spindle components, motor shafts, hydraulic parts, transmission components and other rotational workpieces requiring accurate diameter, roundness and surface finish.