ER COLLET CHUCKS
LYNDEX-NIKKEN ER COLLET CHUCK FEATURES
OTHER
AT3 or better taper tolerance • All 40 taper tool angles are manufactured within +/-.0011 degrees angular tolerance • Largest diameter of taper (where rigidity is established) is held within +/- 80 millionths (.00008”) • Precision ground taper ensures 80% or better taper contact
AT4 taper tolerance • All 40 taper tool angles are manufactured within +/-.0018 degrees angular tolerance • Largest diameter of taper (where rigidity is established) varies within +/- 138 millionths (.00014 " ) • Varying aspects of taper angle and diameter can only ensure up to 60% taper contact
Drive key depth balanced for high speed rotation.
ER Nut Smooth nut prevents coolant flare and provides better balance. Reduced gap size to prevent bird nests and other stringy chips from packing in or wrapping about. Body of Collet Chuck equal in diameter to the nut diameter. Thicker diameter and wall thickness results in stronger rigidity. Bearing Nut Bearing nut improves gripping force and accuracy by reducing the friction between nut and collet.
Recessed collet chuck body diameter weakens rigidity of holder.
Large Hex nut body design flares coolant away from toolholder.
Nickel Chrome Molybdenum Alloy Lyndex-Nikken toolholders are heat treated in house to a hardness between 55 to 58 Rc under the highest quality standard, ensuring a homogeneous martensite (needle-shaped) crystalline structure. The additional heat treatment process allows for a better ground surface finish and stress stability of the toolholder.
High Carbon Steel Other toolholders are commonly not heat treated thoroughly in order to reduce production costs, resulting in austenite deposits. Surface finish and material integrity are compromised commonly masked by chrome plating or polishing.
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847-367-4800
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