U Drill

Category Overview

U‑Drill solutions deliver fast, stable holemaking on CNC lathes and machining centers at shallow to medium depths. These indexable drills use replaceable inserts for quick changes and predictable cost per hole. We design and produce drill bodies, compatible SPGT/SPMG inserts, and tailored variants to match specific machines, materials, and holders.

Built in our 4,316 m² Changzhou facility equipped with TTB, WALTER, ANCA, and DECKEL grinders, pockets and seats are finished to sub‑micron accuracy for consistent insert location and reliable chip evacuation.

Core Advantages and Use Cases

• High throughput and cost control: Bodies paired with inserts enable high feed rates and short changeovers. Balanced cutting and optimized internal channels support stable performance in continuous production.


• Tolerance and finish: Tight seat geometry and polished pocket surfaces help achieve low runout. Typical applications reach H8–H9 depending on setup, with clean entry/exit and reduced burrs on solid or cored stock.


• Material coverage: Solutions for carbon and alloy steel, stainless, cast iron, and aluminum. Choose chipbreakers for short‑ or long‑chipping materials to maintain controlled chip flow.

Materials and Insert Options

Select SPGT or SPMG styles and grades by workpiece. Coated (PVD/CVD) tungsten carbide improves wear resistance in steels and cast irons. Polished, sharp‑edge inserts suit aluminum and other non‑ferrous alloys. Match chipbreaker geometry to feed rate, depth, and coolant pressure for consistent chip control.

Range and Specifications

• Diameter range: Core sizes from 12–60 mm for rapid holemaking on turning centers and machining centers.


• Length‑to‑diameter: 1×D, 2×D, and 3×D options balance rigidity and reach; internal coolant is available for each.


• Interfaces: Straight shanks for collet chucks, plus BT30–BT50, CAT40–CAT50, and HSK63–HSK100 to fit common holders.


• Seats and clamping: Precision‑ground pockets ensure accurate projection and secure seating across multiple carbide grades.

Modular and Custom Solutions

Modular designs allow quick swaps of bodies and tips to adjust diameter or depth without changing setups, helping reduce inventory while maintaining rigidity and concentricity.

For non‑standard needs, we engineer bodies and pockets from drawings or samples, including steps, chamfers, counterbores, and interrupted cuts. Geometry, chipbreakers, and coolant paths are tuned to the target material, machine, and clamping system for repeatable cycle times.

Choosing Between Insert Drills and Solid Carbide

Use an insert drill when you need frequent diameter changes, roughing cycles, mixed materials, or shallow to medium depths with strong chip control.

Choose solid carbide for tight‑tolerance bores, deep holes, or thin‑wall sections requiring maximum rigidity and minimal runout. Solid carbide drills and reamers complement these tools for final sizing and finish.

Compatibility and Chip Management

Pair the body with high‑precision collet chucks or BT/CAT/HSK holders to improve concentricity and insert life.

Internal coolant channels, polished bores, and proper venting support heat removal and chip evacuation. Select chipbreakers by material to reduce stringers and prevent recutting at high feeds.

Quality and Certification

Each tool is verified with ZOLLER presetting, PG1000 video measurement, and PARLEC systems for runout and seat integrity.

Processes are certified to ISO 9001 and audited by SGS to help ensure consistent batch quality and traceability.

Selection Guide and Quick Inquiry

• Define: hole diameter, depth (L/D), and required tolerance.


• Match: machine type, holder interface, and available coolant pressure.


• Choose: SPGT/SPMG style, grade, and chipbreaker by material and target feed/speed.


• Request: any special features such as steps, chamfers, or counterbores.

FAQs

• 
  What hole depths suit these drills?
  

  They perform best at 1×D to 3×D with high feeds and stable chip control. For deeper holes, consider solid carbide or dedicated deep‑hole tooling.

  
  


• 
  Are SPGT and SPMG inserts interchangeable?
  

  No. Each fits a dedicated seat. Select the correct style and match grade and chipbreaker to the workpiece.

  
  


• 
  Can they be used on aluminum?
  

  Yes. Use polished, sharp‑edge inserts with internal coolant to avoid built‑up edge. For higher surface demands, follow with a solid carbide reamer.

  
  

Category Notes

This category includes indexable drill bodies, compatible SPGT/SPMG inserts, modular options, and related clamping accessories. Selection is guided by diameter, L/D, interface, insert geometry, and coolant configuration.