FAQ – DUBHE E-Series Reamers

1. What materials are suitable for E-Series reamers?

E-Series reamers are mainly designed for machining carbon steel, alloy steel, and structural steel components, especially steel bushing bearing holes in automotive and new energy drive housing parts.

2. What hole diameter range can the E-Series reamers machine?

The E-Series reamers cover a diameter range from Ø7.90 mm to Ø40.59 mm, making them suitable for precision finishing of conventional hole sizes in CNC machining applications.

3. What precision level can be achieved with E-Series reamers?

These reamers are designed to achieve IT5–IT7 precision levels, depending on machining conditions, tool setup, and workpiece material.

4. Can the diameter of the reamer be adjusted?

Yes. The E-Series reamers feature an expandable adjustment structure, allowing diameter compensation up to 0.02 mmfor maintaining high machining accuracy during long production runs.

5. What cutting materials are available for the reamer edges?

The cutting edges can be manufactured using Cermet, Carbide, or PCD (Polycrystalline Diamond), allowing users to select the best option for different materials and machining conditions.

6. What cooling methods are supported?

E-Series reamers support multiple cooling options including:

• External coolant

• Central internal coolant

• Dispersed internal coolant

These systems improve chip evacuation and cutting stability.

7. What surface finish can be achieved?

Under proper machining conditions, the E-Series reamer can achieve a surface roughness of up to Ra 0.4 μm, providing excellent hole quality.

8. Can the cutting edges be repaired or refurbished?

Yes. The cutting edges are designed to be repaired and re-welded multiple times, significantly reducing tooling costs and extending tool life.

9. How much can tool life be improved with optimized cooling?

With integrated high-pressure coolant channels and optimized cutting geometry, the E-Series reamers can improve tool life by more than 30% compared with conventional designs.

10. What industries typically use E-Series reamers?

E-Series reamers are widely used in industries such as:

• Automotive components manufacturing

• New energy vehicle electric drive housings

• Mechanical equipment parts

• Precision CNC machining workshops