Machine Comparison
Citizen Miyano BNE-42 vs Citizen Miyano BNE-51
Citizen Machinery vs Citizen Machinery · CNC Lathes
Summary
The BNE-42 and BNE-51 are two bar sizes of the same Citizen Miyano turning center. They share the 5-axis layout (X1, Z1, Y1, X2, Z2), a Mitsubishi M80 control, 6,000 RPM live tools, 20 m/min rapids, a 7,800kg machine weight and a 2,690×2,160mm footprint.
The BNE-51 is the larger-capacity version: 51 mm (2.0 in) bar against 42 mm (1.65 in), 250 mm (9.84 in) chuck work against 200 mm (7.87 in), 130 mm (5.12 in) of turning length against 100 mm (3.94 in), and an 11 kW (15 hp) spindle against 7.5 kW (10 hp). The BNE-42 trades that capacity for speed, with 6,000 RPM main and sub-spindles against 5,000 RPM.
Specifications Comparison
| Specification | Citizen Miyano BNE-42 | Citizen Miyano BNE-51 |
|---|---|---|
| Max Turning Diameter | 200 mm (7.87 in) chuck work | 250 mm (9.84 in) chuck work ▲ |
| Max Turning Length | 100 mm (3.94 in) | 130 mm (5.12 in) ▲ |
| Bar Capacity | 42 mm (1.65 in) | 51 mm (2.0 in) ▲ |
| Max Spindle Speed | 6,000 RPM ▲ | 5,000 RPM |
| Spindle Power | 7.5 kW (10 hp) | 11 kW (15 hp) ▲ |
| Sub-Spindle Speed | 6,000 RPM ▲ | 5,000 RPM |
| Live Tool Speed | 6,000 RPM | 6,000 RPM |
| Rapid Traverse | 20 m/min | 20 m/min |
| Axes | 5 (X1, Z1, Y1, X2, Z2) | 5 (X1, Z1, Y1, X2, Z2) |
| Control | Mitsubishi M80 (Citizen Miyano) | Mitsubishi M80 (Citizen Miyano) |
| Machine Weight | 7,800kg | 7,800kg |
| Floor Space | 2,690×2,160mm | 2,690×2,160mm |
Advantages
Citizen Miyano BNE-42
- 6,000 RPM main spindle against 5,000 RPM
- 6,000 RPM sub-spindle against 5,000 RPM
Citizen Miyano BNE-51
- 51 mm (2.0 in) bar capacity against 42 mm (1.65 in)
- 250 mm (9.84 in) chuck work against 200 mm (7.87 in)
- 130 mm (5.12 in) turning length against 100 mm (3.94 in)
- 11 kW (15 hp) spindle against 7.5 kW (10 hp)
Verdict
Since the frame, footprint and control are the same, bar size decides. Choose the BNE-42 for parts that stay within 42 mm bar, such as solenoid bodies, sensor housings and small medical components, where 6,000 RPM spindles help on small diameters. Choose the BNE-51 for transmission parts, coupling nuts, valve bodies and other work up to 51 mm, where the 11 kW (15 hp) spindle and 130 mm of turning length are needed.