Machine Comparison
Citizen Miyano BNA-42SY vs Citizen Miyano BNC-42
Citizen Machinery vs Citizen Machinery · Mill-Turn Machines
Summary
The Citizen Miyano BNA-42SY is a mill-turn machine with back-side machining, while the Citizen Miyano BNC-42 is listed as a CNC lathe for bar and short chucked work. They serve different jobs, and Citizen publishes few comparable figures for this pair: the table has two rows.
The Citizen Miyano BNA-42SY takes longer parts, with a 100 mm max turning length against 80 mm (3.15 in). The Citizen Miyano BNC-42 is the lighter machine at 2,400kg against 3,880 kg, and Citizen positions it for shops with limited floor space and for turned parts with simple milled features when revolving tools are fitted.
Specifications Comparison
| Specification | Citizen Miyano BNA-42SY | Citizen Miyano BNC-42 |
|---|---|---|
| Max Turning Length | 100 mm ▲ | 80 mm (3.15 in) |
| Machine Weight | 3,880 kg | 2,400kg |
Advantages
Citizen Miyano BNA-42SY
- 100 mm max turning length against 80 mm (3.15 in)
- Built for parts finished on both ends, with off-center drilling and milling on a Y stroke
- A step up for shops moving from a single-spindle lathe to back-side machining
Citizen Miyano BNC-42
- Lighter machine at 2,400kg against 3,880 kg
- Takes short chucked parts as well as collet bar work
- Aimed at shops with limited floor space for a bar lathe
Verdict
These machines fit different jobs. Choose the Citizen Miyano BNA-42SY when parts need back-side work and off-center features finished in one cycle, or run longer than the 80 mm turning length listed for the BNC-42. Choose the Citizen Miyano BNC-42 for simpler turned bar and chucked parts with occasional milled features, where its 2,400kg weight and smaller floor demand matter more than back-working.