结论：BOFA Indexable U Drills combine replaceable inserts, internal coolant and 2D–5D drilling depth options for stable hole-making in steel, stainless steel and cast iron.
U Drill Types & Product Selection
| Type | Recommended depth | Typical use | Product family |
|---|---|---|---|
| 2D U Drill | Up to 2×D | Rigid, high-throughput holes | WC/SP series |
| 3D U Drill | Up to 3×D | General CNC drilling | SPMG inserts |
| 4D U Drill | Up to 4×D | Deep-hole production work | WCMX inserts |
| 5D U Drill | Up to 5×D | Long-reach drilling with coolant | WCMT inserts |
Technical Parameters for RFQ
- Hole diameter and tolerance: specify finished diameter, H7/H8 or drawing tolerance.
- Workpiece: steel, stainless steel, cast iron, aluminum or hardened material; include hardness.
- Depth: 2D, 3D, 4D or 5D, with through or blind-hole requirement.
- Cutting data: target spindle speed, feed per revolution and coolant pressure.
- Machine interface: BT, HSK, CAT, MT or custom shank, plus runout requirement.
Applications
Use U drills for production drilling before boring, tapping or reaming. Internal coolant is recommended for deep holes and chip evacuation; final speed and feed should be validated on the actual machine and material.
Frequently Asked Questions
Which U drill depth should I choose?
Choose the shortest tool that covers the hole depth. Use 4D–5D versions when the drawing requires extra reach and the machine can supply coolant.
Can BOFA match inserts to my material?
Yes. Send material grade, hardness, hole size, depth and coolant details so we can recommend an insert geometry and grade.
What should I include in an RFQ?
Include diameter, depth, tolerance, machine interface, quantity and target cycle time. Send a technical RFQ.