Description

Nickel coating NMTB40 End Mill Holder 1-1/4″ Hole Diameter 4″ Projection

NMTB30 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.

NMTB Tool Holders for mechanical spindle and cutting tool and other accessory tool connection. Is a simple, popular spindle hank connection standard, mainly NMTB30 NMTB40 NMTB50… Etc.. Mold industry, Fit for Drilling Machine, Milling Machine CNC Chuck or Holder.

1. TIR: ≤0.0002″

2. Material: 20CrMnTi

3. Works on all NMTB40 Machines 

4. Rear thread for pull stud is 5/8″-11UNC

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

6. AT3 or better accuracy standard taper specification for maximum contact with spindle.

7. Nickel coating surface,  Anti-rust, anti-corrosion, durability better.

Anti-rust, anti-corrosion, durability better.

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

◆Overall nickel coating , includinginside and outside cone, even if you do not take any anti-rust actions, it will not rust either, don’t influence processing precision andspindle. Improve cleanness, precision more stable, surface more smooth, feelmore 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.