Reference Library › Grinding › GP-47N

Reference recordMBB·GRINDING/OKUMA-GP-47NUpdated 2026-10-10

Photo: Okuma (manufacturer)

MakeOkuma

ModelGP-47N

Machine typeGrinding

Distance Between Centers84.65, 104.33, or 124.02 in (2,150, 2,650, or 3,150 mm)

Max Grinding Dia.Ø15.75 in (Ø400 mm)

Grinding Wheel ODxIDØ30 × Ø12 in (Ø760 × Ø304.8 mm)

Max Grinding Wheel Width5.12 in (130 mm)

Rapid Traverse:X472 ipm (12 m/min)

Rapid Traverse:Z394 ipm (10 m/min)

Wheel Spindle Motor20 hp (15 kW)

Swing over table, mm (in)ø430 (16.93)

Max workpiece mass — Center supported, kg (lb)1,500 (3,300)

Wheel — Grinding speed, m/min (fpm)1,200 to 2,000 (3,937.2 to 6,562)

Wheelhead (X-axis) — Travel, mm (in)475 (18.70)

Wheelhead (X-axis) — Auto infeed speed, mm/min (ipm)ø0.0012 to ø6,000 (ø0.0000472 to 236.2)

Wheelhead (X-axis) — Min command increment, mm (in)ø0.0001 (ø0.000004)

Table (Z-axis) — Auto infeed speed, mm/min (ipm)0 to 5,000 (0 to 196.85)

Table (Z-axis) — Min command increment, mm (in)0.001 (0.00004)

Workhead — Spindle speed, min⁻¹5 to 150

Tailstock — Manual travel, mm (in)65 (2.56)

Motors — Workhead, kW (hp)4.2 (5.6)

Motors — Wheelhead feed, kW (hp)2.9 (3.9)

Motors — Table feed, kW (hp)4.2 (5.6)

Motors — Coolant pump, kW (hp)0.4 (1/2)

Motors — Hydraulic oil pump, kW (hp)0.75 (1)

Motors — Hydrostatic oil pump, kW (hp)0.75 (1)

Motors — Wheel guard hyd pump, kW (hp)1.5 (2)

Motors — Wheel spindle lube pump, kW (hp)0.075 (0.1)

Motors — Coolant separator, kW (hp)0.025 (0.03)

Tank capacity — Coolant, L (gal)300 (79.26)

Tank capacity — Hydraulic oil, L (gal)40 (10.57)

Tank capacity — Hydrostatic oil, L (gal)40 (10.57)

Tank capacity — Wheel guard oil, L (gal)20 (5.28)

Tank capacity — Wheel spindle oil-lube, L (gal)20 (5.28)

ControllerOSP-P300GA

Grinding wheel spindle motor (option)22 kW (30 hp)

Table (Z-axis) — Travel (× 215), mm (in)2,430 (95.67)

Mass (× 215), kg (lb)13,000 (28,600)

Table (Z-axis) — Travel (× 265), mm (in)2,930 (115.35)

Mass (× 265), kg (lb)14,000 (30,800)

Table (Z-axis) — Travel (× 315), mm (in)3,430 (135.04)

Mass (× 315), kg (lb)15,000 (33,000)

📋 Spec data: Detailed (39 fields) · compiled from manufacturer and public sources · reference updated 2026-10-15.
These specifications describe the model in general. The year, control generation, spindle, and option package of a specific unit may differ — always verify against the actual machine. Methodology · Data sources.

Okuma

GP-47N

Evidence updated 15 October 2026: specifications. How evidence is dated

MBB Model ID MBB-M-AAEBQR · What is this?

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About the Okuma GP-47N

The Okuma GP-47N is catalogued under Grinding in The Machine Blue Book CNC machine reference library. This entry documents the machine for identification and education; specifications above are compiled from manufacturer and public sources and describe the model, not a specific unit.

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