About this product

1. Material: 20CrMnTi
2. Run out of the inside shank cone ≤0.0001"
3. Collet Chuck accepts all ER40 collets
4. Hardness: 56-60 HRC
5. Rear thread for pull stud is 7/16" - 20 UNF

Nickel coating R8 ER40 Collet Chuck Tool Holder 2.76" Projection

R8 ER collet chuck arbor R8-ER, ER collet clamping tool holder of various sizes, high speed and high precision machining.

Mechanical spindle and cutting tools and other accessories.

High Precision R8-ER shank Tool Holder.

For the market for automatic tool change device.

R8 tool holders for mechanical spindle and cutting tool and other accessory tool connection.

1. Material: 20CrMnTi

2. Run out of the inside shank cone ≤0.0001"

3. Constructed of alloy steel hardened to 56 – 60 HRC for long, durable service life

4. Rear thread for pull stud is 7/16" - 20UNF

5. Surface: Nickel coating and polishing nickel coating.

Anti-rust, Anti-corrosion, Durability better

◆ Coating adhesion strong, enhance hardness, and anti-rust better in different surroundings, such as acid, alkali, ammonia, salt etc.

◆ Overall nickel coating, including inside and outside cone, even if you do not take any anti-rust actions, it will not rust either,

don't influence processing precision and spindle.

◆ Improve cleanness, precision more stable, surface more smooth, feel more comfortable and appearance nicer.

Cryogenic treatment

◆ -384.8℉ long cryogenic, nearly all of the residual austenite into martensite.

◆ Carbide precipitation of nanoscale particles, increasing the hardness and toughness.

◆ Reducing residual stresses.

◆ Wear resistance significantly improved.

Thermal aging processing

◆ long stereotyped thermal limitation removal of grinding residual stress.