## Selection Steps
1. Confirm the required workpiece OD, length and weight.
2. Check whether the required diameter fits swing over carriage, not only swing over bed.
3. Match spindle bore to bar or pipe OD, leaving clearance for real material tolerance.
4. Choose guideway width and machine weight according to cutting load.
5. Decide chuck, tailstock, steady rest and CNC system.
6. Send drawings to Anyang Xinheng Machine Tool Co., Ltd. for final confirmation before ordering.
## Recommended Configuration
| Workpiece demand | Suggested Xinheng model range | Why |
|—|—|—|
| Small shafts, fittings, light parts | CK0640 / CK6130 | Compact footprint, 260 mm guideway, economical CNC system |
| Medium shafts and flanges | CKQ6150 / CKQ6166 | 400 mm guideway, 500-660 mm swing class, optional larger spindle bore |
| Large shafts and heavy parts | CKB6180 / CK61100 | 600-755 mm guideway, higher motor power and heavier bed |
| Oil pipe and casing | QK series pipe threading lathe | Large spindle bore, pipe chucking and thread cutting setup |
| Manual repair work | CQ conventional lathe | Flexible operation for single-piece turning and repair |
## Buyer Checklist
– Workpiece drawing with OD, ID, length and tolerance
– Material grade, such as 45 steel, 42CrMo, 316 stainless steel or cast iron
– Batch size and daily production target
– Rated roughing depth and surface finish requirement
– Voltage, language, CNC brand preference and destination port
## Real Project Reference
An India CK0640 order, used a compact flat bed CNC lathe with 300 mm swing over bed, 180 mm workpiece length, 40 mm spindle bore and 260 mm guideway span. The machine with delivery within 45 days and packing of 7.79 m3, 1,100 kg net and 1,300 kg gross.
## Practical Selection Notes
If the title question is about diameter, start with swing over carriage. If it is about long parts, start with rated turning length and tailstock support. If it is about pipe, start with spindle bore and chuck. If it is about heavy parts, start with workpiece weight, guideway span and machine net weight.
## FAQ
### Can one CNC lathe machine do every part?
Usually no. A machine optimized for small efficient parts is not the best choice for large heavy shafts.
### Should I choose hydraulic chuck or manual chuck?
Hydraulic chuck is better for repeated production. Manual chuck is simpler and flexible for repair or low-volume work.
### Why does Xinheng ask for drawings?
Because small details such as shoulder length, bore depth and thread type can change the recommended model.
