Machine Comparison
Citizen Miyano BNA-42MSY vs Citizen Miyano BNE-51MSY
Citizen Machinery vs Citizen Machinery · Mill-Turn Machines
Summary
The Citizen Miyano BNA-42MSY and Citizen Miyano BNE-51MSY are both from Citizen Machinery's mill-turn machines lineup, making this a common upgrade or lineup decision for shops already invested in the Citizen Machinery ecosystem. The Citizen Miyano BNE-51MSY shows specification advantages in 9 categories, though the Citizen Miyano BNA-42MSY may still be the better choice depending on your shop's specific needs and the type of work you run. Both machines are proven performers in production environments and represent solid investments for shops in the market for a mill-turn machine.
Specifications Comparison
| Specification | Citizen Miyano BNA-42MSY | Citizen Miyano BNE-51MSY |
|---|---|---|
| Control | Mitsubishi CNC | Mitsubishi CNC |
| Max Bar Capacity Sp1 | 42 mm (1.65 in) | 51 mm (2.0 in) ▲ |
| Max Bar Capacity Sp2 | 34 mm (1.34 in), 42 mm optional | 51 mm (2.0 in) ▲ |
| Max Machining Length | 100 mm (3.94 in) ▲ | 90 mm (3.54 in) |
| Main Spindle Speed | 6,000 RPM ▲ | 5,000 RPM |
| Main Spindle Power | 11/7.5 kW (15/10 hp) | 15/11 kW (20/15 hp) ▲ |
| Sub Spindle Speed | 5,000 RPM | 5,000 RPM |
| Sub Spindle Power | 5.5/3.7 kW (7.5/5 hp) | 7.5/5.5 kW (10/7.5 hp) ▲ |
| Live Tool Speed | 6,000 RPM | 6,000 RPM |
| Live Tool Power | 1.0 kW (12 Nm) | 2.2 kW (20 Nm), 4.0 kW (25 Nm) optional ▲ |
| Travel X1 | 140 mm (5.51 in) | 195 mm (7.68 in) ▲ |
| Travel Z1 | 235 mm (9.25 in) | 380 mm (14.96 in) ▲ |
| Travel Y1 | 70 mm (+/-35 mm) | 80 mm (+/-40 mm) ▲ |
| Travel X2 | 129 mm (5.08 in) | 195 mm (7.68 in) ▲ |
| Price Range | $170,000 - $250,000 ▲ | $320,000 - $450,000 |
Advantages
Citizen Miyano BNA-42MSY
- Superior max machining length at 100 mm (3.94 in) vs 90 mm (3.54 in)
- Superior main spindle speed at 6,000 RPM vs 5,000 RPM
- More competitive pricing at $170,000 - $250,000 compared to $320,000 - $450,000
Citizen Miyano BNE-51MSY
- Superior max bar capacity sp1 at 51 mm (2.0 in) vs 42 mm (1.65 in)
- Superior max bar capacity sp2 at 51 mm (2.0 in) vs 34 mm (1.34 in), 42 mm optional
- Superior main spindle power at 15/11 kW (20/15 hp) vs 11/7.5 kW (15/10 hp)
- Superior sub spindle power at 7.5/5.5 kW (10/7.5 hp) vs 5.5/3.7 kW (7.5/5 hp)
- Superior live tool power at 2.2 kW (20 Nm), 4.0 kW (25 Nm) optional vs 1.0 kW (12 Nm)
Verdict
The Citizen Miyano BNE-51MSY edges ahead on specifications in this comparison, particularly in max bar capacity sp1 and max bar capacity sp2. However, the Citizen Miyano BNA-42MSY remains competitive and may be the better choice depending on price, dealer support in your area, or specific workholding and tooling considerations. Both are capable machines — the best decision comes from running your actual parts and evaluating total cost of ownership including tooling, training, and service.