Nickel coating  NMTB40 End Mill Holder 3/16" Hole Diameter 2.37" 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 shank 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.

◆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 .