Nickel coating R8 End Mill Holder 1-1/4" Hole Diameter 3.15" Projection

R8 SLN High Precision End Mill Holder, apply to the holder of a DIN1835-B with a solid surface of the cutting tool,

high speed and high precision machining .Mechanical spindle and cutting tools and other accessories.

High Precision R8 shank Tool Holder .
R8 Tool Holders for mechanical spindle and cutting tool and other accessory tool connection. 

1. TIR: ≤0.0002"
2. Material: 20CrMnTi
3. Works on all R8 Machines
4. Rear thread for pull stud is 7/16"-20 UNF
5. Constructed of alloy steel hardened to 56 – 60 HRC for long, durable service life
6. Nickel coating surface, Anti-rust, anti-corrosion, durability better.

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.