Machine Comparison
Okuma GP-GA-34FII vs Okuma GP-GA-36FII
Okuma vs Okuma · CNC Grinding Machines
Summary
The Okuma GP-GA-34FII and Okuma GP-GA-36FII are both from Okuma's cnc grinding machines lineup, making this a common upgrade or lineup decision for shops already invested in the Okuma ecosystem. These machines are closely matched across most specifications, making the decision more about specific feature priorities, dealer support, and your existing shop ecosystem than raw spec advantages. Both machines are proven performers in production environments and represent solid investments for shops in the market for a cnc grinding machine.
Specifications Comparison
| Specification | Okuma GP-GA-34FII | Okuma GP-GA-36FII |
|---|---|---|
| X-Axis Travel | 275 mm (10.83 in) | 275 mm (10.83 in) |
| Z-Axis Travel | 525 mm (20.67 in) | 1,050 mm (41.34 in) ▲ |
| Control | Okuma OSP-P300G | Okuma OSP-P300G |
| Max Grinding Diameter | 340 mm (13.4 in) | 340 mm (13.4 in) |
| Distance Between Centers | 500 mm (19.7 in) | 1,000 mm (39.4 in) ▲ |
| Grinding Wheel Size | 510 x 75 mm (20.1 x 3.0 in) | 510 x 75 mm (20.1 x 3.0 in) |
| Wheel Speed Max | 45 m/s (8,858 sfm) | 45 m/s (8,858 sfm) |
| Min Feed Increment | 0.0001 mm (0.000004 in) | 0.0001 mm (0.000004 in) |
| Rapid Traverse X | 10 m/min (394 ipm) | 10 m/min (394 ipm) |
| Rapid Traverse Z | 15 m/min (591 ipm) | 15 m/min (591 ipm) |
| Workhead Speed | 10 - 400 RPM | 10 - 400 RPM |
| Workhead Center | MT5 | MT5 |
| Swivel Angle | +/- 6° | +/- 6° |
| Machine Weight | 6,000 kg (13,228 lb) | 7,500 kg (16,535 lb) ▲ |
| Price Range | $200,000 - $280,000 ▲ | $230,000 - $310,000 |
Advantages
Okuma GP-GA-34FII
- More competitive pricing at $200,000 - $280,000 compared to $230,000 - $310,000
- Backed by Okuma's dealer and service network for parts and support
- Automotive manufacturers grinding large-diameter transmission components, differential housings, and bearing journals exceeding 250 mm diameter
Okuma GP-GA-36FII
- Greater z travel of 1,050 mm (41.34 in) accommodates larger workpieces
- Superior distance between centers at 1,000 mm (39.4 in) vs 500 mm (19.7 in)
- Superior machine weight at 7,500 kg (16,535 lb) vs 6,000 kg (13,228 lb)
Verdict
This is a close matchup. The Okuma GP-GA-34FII and Okuma GP-GA-36FII trade advantages across different specifications, making neither a clear winner on paper alone. Your decision should come down to practical factors: which dealer is closer, which control system your operators already know, what tooling ecosystem you're invested in, and which machine's specific strengths match your highest-volume work. Get quotes on both, run test cuts with your actual parts if possible, and factor in long-term service and support costs.