Machine Comparison
Star Micronics SR-10J vs Star Micronics SR-20JII Type A/B
Star Micronics vs Star Micronics · Swiss-Type Lathes
Summary
The Star Micronics SR-10J and Star Micronics SR-20JII Type A/B are Swiss-type lathes that share their spindle specification: 10,000 rpm on the main and sub-spindles, 2.2 kW continuous power, 35 m/min rapids and a FANUC 32i-B control. The headline difference is bar size.
The SR-20JII Type A/B takes Ø20 mm bar, with Ø23 mm optional, against Ø10 mm on the SR-10J, and is aimed at more complex multi-feature parts. The SR-10J is the compact option: 1,400 kg on a 1,865 × 775 × 1,695 mm footprint, against 2,750 kg on 2,250 × 1,200 × 1,700 mm.
Specifications Comparison
| Specification | Star Micronics SR-10J | Star Micronics SR-20JII Type A/B |
|---|---|---|
| Max Turning Diameter | 10 mm (25/64 in) | 20 mm (25/32 in), optional 23 mm (29/32 in) |
| Bar Capacity | Ø10 mm(25/64 in) | Ø20 mm (25/32 in); Optional (OP): Ø23 mm (29/32 in) |
| Max Spindle Speed | 10,000 rpm | 10,000 rpm |
| Spindle Power | 2.2 kW(continuous)/3.7 kW(15min./60%ED) | 2.2 kW (continuous) / 3.7 kW (10min./25%ED) |
| Sub-Spindle Speed | 10,000 rpm | 10,000 rpm |
| Rapid Traverse | 35 m/min (X, Y, Z, XB, ZB) | 35 m/min (X1, X2, Z1, Z2); 24 m/min |
| Control | FANUC 32i-B | FANUC 32i-B |
| Machine Weight | 1,400 kg | 2,750 kg |
| Floor Space | 1,865 × 775 × 1,695 mm | 2,250 × 1,200 × 1,700 mm |
Advantages
Star Micronics SR-10J
- Lighter at 1,400 kg against 2,750 kg
- Smaller footprint: 1,865 × 775 × 1,695 mm against 2,250 × 1,200 × 1,700 mm
Star Micronics SR-20JII Type A/B
- Ø20 mm bar capacity against Ø10 mm
- Optional Ø23 mm bar capacity
- Aimed at complex multi-feature parts completed in one cycle
Verdict
Spindles, rapids and control are the same, so choose by diameter. The Star Micronics SR-10J suits micro screws, dental pins, hearing aid parts and connector pins under 10 mm, especially in cells where floor space is tight. The Star Micronics SR-20JII Type A/B is the choice for bone screws, shafts, valve parts and fittings in the 10-20mm range, with Ø23 mm available as an option.