Machine Comparison
Star Micronics SB-12R Type G vs Star Micronics SB-16R Type G
Star Micronics vs Star Micronics · Swiss-Type Lathes
Summary
The Star Micronics SB-12R Type G and Star Micronics SB-16R Type G are both from Star Micronics's swiss-type lathes lineup, making this a common upgrade or lineup decision for shops already invested in the Star Micronics 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 swiss-type lathe.
Specifications Comparison
| Specification | Star Micronics SB-12R Type G | Star Micronics SB-16R Type G |
|---|---|---|
| Control | Fanuc 0i-TD | Fanuc 0i-TD (8.4" color LCD) |
| Max Machining Diameter | 13 mm (33/64 in) | 16 mm (5/8 in) ▲ |
| Max Headstock Stroke Guide Bush | 205 mm (8 in) | 205 mm (8 in) |
| Max Headstock Stroke Non Guide Bush | Bar diameter x 2.5 (max 30 mm) | Bar diameter x 2.5 (max 50 mm) |
| Main Spindle Speed | 15,000 RPM ▲ | 10,000 RPM |
| Main Spindle Power | 2.2 kW continuous / 3.7 kW (10 min, 25% ED) | 2.2 kW continuous / 3.7 kW (10 min, 25% ED) |
| Sub Spindle Speed | 12,000 RPM ▲ | 9,000 RPM |
| Sub Spindle Power | 0.55 kW continuous / 1.1 kW (15 min, 40% ED) | 0.55 kW continuous / 1.1 kW (15 min, 40% ED) |
| Rapid Feed Rate | 35 m/min (X1, Y1, Z1, X2, Z2) | 35 m/min (X1, Y1, Z1, X2, Z2) |
| Guide Bushing | Switchable (guide bush / non-guide bush) | Switchable (guide bush / non-guide bush) |
| Coolant Tank | 180 L | 180 L |
| Machine Weight | 1,750 kg (3,858 lb) | 1,750 kg (3,858 lb) |
| Dimensions | 2,070 x 1,177 x 1,760 mm | 2,070 x 1,177 x 1,760 mm |
| Price Range | $80,000 - $130,000 ▲ | $85,000 - $140,000 |
Advantages
Star Micronics SB-12R Type G
- Superior main spindle speed at 15,000 RPM vs 10,000 RPM
- Superior sub spindle speed at 12,000 RPM vs 9,000 RPM
- More competitive pricing at $80,000 - $130,000 compared to $85,000 - $140,000
Star Micronics SB-16R Type G
- Superior max machining diameter at 16 mm (5/8 in) vs 13 mm (33/64 in)
- Backed by Star Micronics's dealer and service network for parts and support
- Medical device shops producing bone screws, spinal implants, dental components, and surgical instruments in the 10-16mm diameter range
Verdict
This is a close matchup. The Star Micronics SB-12R Type G and Star Micronics SB-16R Type G 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.