Machine Comparison
Okuma GP-GA-36FII vs Okuma GP-GA-44FII
Okuma vs Okuma · CNC Grinding Machines
Summary
The Okuma GP-GA-36FII and the Okuma GP-GA-44FII are CNC cylindrical grinders from the same Okuma line, built 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.
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. What differs is the work each is set up for. The Okuma GP-GA-36FII is the production plunge grinder, for wide faces on shafts and for shallow tapers. The Okuma GP-GA-44FII takes larger diameters, such as flanges and sleeves, and suits light-stock finish grinding of narrow diameters with a narrower wheel.
Specifications Comparison
| Specification | Okuma GP-GA-36FII | Okuma GP-GA-44FII |
|---|---|---|
| Rapid Traverse | 15 m/min (591 ipm) | 16 m/min (630 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) |
Advantages
Okuma GP-GA-36FII
- Suited to wide plunge grinding of shafts in production
- Handles shallow tapers and taper correction
Okuma GP-GA-44FII
- Takes larger-diameter work such as flanges and sleeves
- Suited to light-stock finish grinding of narrow diameters
- Same four bed lengths, 350 mm (13.78 in) to 1,500 mm (59.05 in), for mixed part lengths
Verdict
Choose by diameter and by the width of the cut. Shops plunge grinding wide faces on production shafts, or correcting shallow tapers, should choose the Okuma GP-GA-36FII. Shops grinding flanges, sleeves and other large-diameter parts with light stock should choose the Okuma GP-GA-44FII. Both come with 350 / 650 / 1,000 / 1,500 mm between centers, so part length does not decide between them.