Reamer

Overview

These reaming tools deliver precise hole sizing, bright finishes, and long service life. Manufacturing takes place in Changzhou, Jiangsu. Tools are ground on Swiss TTB, German WALTER HELITRONIC/DECKEL S22/SRO, and Australia ANCA lines. Each model features sub‑micron edge preparation, tight dimensional control, and mirror‑finished cutting edges. Pairing with high‑precision collet chucks helps minimize runout and improve hole quality in aluminum, stainless steel, titanium, cast iron, and hardened steels.

Product Range

Standard solid carbide designs are available alongside fully custom forms in metric and inch sizes. Choose straight or spiral flutes, with optional through‑coolant. These choices improve stock removal control, chip evacuation, and dimensional stability in production.

Types include:

• Chucking (machine) designs for H7–H6 fits. With proper toolholding, <3 μm runout is achievable. Options: 4/6/8 flutes, 0–30° helix, and TiAlN/AlTiN coatings. Typical diameters 1–25 mm; customs up to 60 mm.


• Through‑coolant variants for stainless, titanium, and deeper bores. Internal channels improve chip flow and thermal stability at higher feeds.


• Step forms to finish multi‑diameter bores in one pass. Pilot, step diameters, chamfers, and reliefs are tailored to your drawing.


• Adjustable/expansion designs with micron‑level correction to offset wear and maintain target fits, reducing downtime.


• Taper options (Morse, pin, and custom angles) for accurate seats and alignment features.


• Hand and bridge/car styles with longer leads and robust margins for fit‑up and on‑site alignment.


• Micro tools using ultra‑fine carbide and controlled edge prep for 0.5–1.0 mm bores.

Materials, Geometry, and Coatings

Substrate grades cover ISO P/M/K/N/S/H. Grain size and binder are matched to balance hardness, toughness, and heat resistance for steel, stainless, cast iron, non‑ferrous alloys, superalloys, and hardened materials. Helix angle, lead chamfer, rake, and margin width are tuned to control cutting forces and surface integrity. Straight flutes offer guidance and rigidity in through holes; spiral flutes (7°–30°) lift chips and enhance finish in blind holes and softer alloys. Coating options include TiAlN/AlTiN for steels, nACo for high‑speed work, DLC for aluminum to reduce built‑up edge, and diamond for composites.

Performance and Practical Guidelines

With proper pre‑holes and fixturing, these tools support predictable size, roundness, cylindricity, and low Ra values. Typical outcomes include H7–H6 size, roundness ≤5 μm, cylindricity ≤8 μm, and Ra 0.2–0.8 μm, depending on material and setup.

Leave 0.2–0.5% of diameter as allowance after drilling or boring. Keep pre‑holes straight to avoid bell‑mouth and taper. Use moderate surface speed with higher feed per revolution to balance burnishing and chip load. Select MQL, flood, or through‑coolant based on alloy and hole depth. High‑precision collet chucks and presetting help keep runout below 3 μm. Balanced assemblies with h6 shanks reduce vibration and protect edges, supporting consistency in mass production.

Custom Engineering and Quality

When a standard tool does not fit the requirement, we design to your print or sample. Provide drawings and process goals; we propose geometry, substrate, and coating. Dimensions and offsets are confirmed with ZOLLER and PG1000 preset data. Prototypes can be supplied, with PPAP‑style reports on request.

Production is anchored by TTB micro grinding, WALTER, DECKEL, and ANCA equipment in our 4,316 m² Changzhou base. ZOLLER presetting, PG1000 video measurement, and PARLEC systems verify diameter, runout, edge prep, and geometry with traceable data. ISO9001 (2023–2026) and SGS support a stable quality system.

Application Highlights

• Aluminum components: DLC‑coated spiral models reduce built‑up edge and deliver bright finishes; through‑coolant aids deep bores.


• Stainless and heat‑resistant alloys: TiAlN variants with through‑coolant manage heat and chip packing in 304/316 and nickel alloys.


• Hardened and tool steels: Micro‑grain carbide with optimized margins and AlTiN withstands abrasive wear in HRC 45–60 bores.


• Mold/die and hydraulic blocks: Step and micro designs hold multi‑diameter accuracy for ejector seats and valve bores.


• Composites and non‑ferrous: Diamond‑coated options and special margins limit delamination and smearing in CFRP and copper alloys.

Selection Tips and Common Pitfalls

• Through holes in steels: straight flute or low‑helix TiAlN model.


• Blind holes or gummy alloys: spiral flute with through‑coolant.


• Multi‑diameter features: step design.


• Fine on‑site sizing: adjustable/expansion tool.

Avoid too little stock, excessive runout, and poor chip evacuation. Verify pre‑hole size, use stable clamping, and match coolant to the alloy.

Support

We provide engineering consultation, quick sampling, and on‑site optimization. Contact us with your drawing to discuss a solution or request a quote.