Machine Comparison
Okuma GP-GA-34FII vs Okuma GP-GA-36FII
Okuma vs Okuma · CNC Grinding Machines
Summary
The Okuma GP-GA-34FII and the Okuma GP-GA-36FII are sister CNC cylindrical grinders on the same range of beds. Both are offered with 350 / 650 / 1,000 / 1,500 mm (13.78 / 25.60 / 39.4 / 59.05 in) between centers, and both run the Okuma OSP-P300G control.
Okuma publishes few comparable figures for this pair, and the listed rapid traverse figures differ only marginally, so the table does not separate the two. The difference is in the kind of grinding each is meant for. The Okuma GP-GA-34FII suits finish grinding with light stock on shafts and pins. The Okuma GP-GA-36FII suits production work: wide plunge grinding, shallow tapers and taper correction.
Specifications Comparison
| Specification | Okuma GP-GA-34FII | Okuma GP-GA-36FII |
|---|---|---|
| Rapid Traverse | 16 m/min (630 ipm) ▲ | 15 m/min (591 ipm) |
| Distance Between Centers | 350 / 650 / 1,000 / 1,500 mm (13.78 /25.60 / 39.4 / 59.05 in) | 350 / 650 / 1,000 / 1,500 mm (13.78 / 25.60 / 39.4 / 59.05 in) |
| Control | Okuma OSP-P300G | Okuma OSP-P300G |
Advantages
Okuma GP-GA-34FII
- Suited to finish grinding with light stock on shafts and pins
- Same four bed lengths, 350 mm (13.78 in) to 1,500 mm (59.05 in), for shops that do not need wide plunge cuts
Okuma GP-GA-36FII
- Suited to wide plunge grinding in production
- Handles shallow tapers and taper correction
- Same four bed lengths and the same Okuma OSP-P300G control as the lighter machine
Verdict
Choose by how much stock you remove and how wide the cut is. For finish grinding of shafts and pins with light stock, the Okuma GP-GA-34FII is the fit. For production plunge grinding across wide faces, and for shallow tapers, choose the Okuma GP-GA-36FII. Bed lengths from 350 mm to 1,500 mm and the Okuma OSP-P300G control are common to both, so neither length nor programming should sway the decision.