Okuma GP-GA-34FII
Image: okuma.com, Okuma
Key Specifications
Rapid Traverse
max grinding diameter
distance between centers
grinding wheel size
rapid traverse x
workhead center
How much does the Okuma GP-GA-34FII cost?
Estimated price range
Our best estimate for a cnc grinding machine in this class — not a quote from Okuma. Configuration moves it a long way.
Overview
The Okuma GP-GA-34FII is the light-wheel, 300 mm (11.81 in) member of Okuma's FII cylindrical grinders. Its wheel is listed at 455 × 127 mm (18 × 5 in), the wheel spindle motor is 7.5 kW (10 hp), and the control named in the table is the Okuma OSP-P300G.
Four beds are listed, with 350 / 650 / 1,000 / 1,500 mm (13.78 / 25.60 / 39.4 / 59.05 in) between centers. The same model can therefore be bought as a compact grinder for pins and short spindles or as a shaft grinder, and a shop should size the bed to its longest regular part, since the shortest one leaves little room once workholding is on.
Wheel width is 75 mm (3 in). Together with the 7.5 kW motor that sets the character of the machine: finishing and light-stock grinding, with narrow diameters plunged and wider seats traverse ground. The GP-GA-36FII keeps the 300 mm capacity and the four beds but moves to a 610 × 254 mm (24 × 10 in) wheel, a 150 mm (6 in) width and 15 kW (20 hp), so the choice between the two is about stock removal and wheel face, not part size.
X rapid traverse is 10 m/min (394 ipm), and the highest rapid figure in the table is 16 m/min (630 ipm). The workhead center is MT5.
Full Specifications
| Parameter | Value |
|---|---|
| Max Grinding Diameter | 300 mm (11.81 in) |
| Distance Between Centers | 350 / 650 / 1,000 / 1,500 mm (13.78 /25.60 / 39.4 / 59.05 in) |
| Grinding Wheel Size | 455 × 127 mm (18 × 5 in) |
| Rapid Traverse X | 10 m/min (394 ipm) |
| Workhead Center | MT5 |
| CNC Control | Okuma OSP-P300G |
| Rapid Traverse Rate | 16 m/min (630 ipm) |
| Wheel Spindle Motor | 7.5 kW (10 hp) |
| Grinding Wheel Width | 75 mm (3 in) |
Specifications sourced from okuma.com — verified 2026-10-03
Strengths & Limitations
Strengths
- Four center distances, 350 / 650 / 1,000 / 1,500 mm (13.78 / 25.60 / 39.4 / 59.05 in), on one 300 mm (11.81 in) grinding diameter
- A 75 mm (3 in) wheel width on a 455 × 127 mm (18 × 5 in) wheel reaches narrow diameters between closely spaced shoulders
- The Okuma OSP-P300G control is named in the table, with an MT5 workhead center
Limitations
- 7.5 kW (10 hp) wheel motor, half the 15 kW (20 hp) the GP-GA-36FII brings to the same size of work
- A 75 mm (3 in) wheel width means wider journals have to be traverse ground
- Grinding diameter is limited to 300 mm (11.81 in); the GP-GA-44FII takes 400 mm (15.75 in)
Best For
Frequently Asked Questions
01
The wheel and its motor. The GP-GA-34FII has a 455 × 127 mm (18 × 5 in) wheel, 75 mm (3 in) wide, on 7.5 kW (10 hp). The GP-GA-36FII has a 610 × 254 mm (24 × 10 in) wheel, 150 mm (6 in) wide, on 15 kW (20 hp) with 22 kW (30 hp) optional. Maximum grinding diameter is 300 mm (11.81 in) on both, with the same four center distances.
02
Okuma lists 350 / 650 / 1,000 / 1,500 mm (13.78 / 25.60 / 39.4 / 59.05 in). The grinding diameter of 300 mm (11.81 in) and the 455 × 127 mm wheel do not change with the bed, so the decision comes down to the longest part and how much room its workholding takes.
03
The table names the Okuma OSP-P300G. No grinding cycles or control options are listed beyond the name, so the functions needed for a particular part, and what is included with the machine, should be confirmed with Okuma.
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