k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/gd8Q/X9C87vMZ1ZuiU/vZRWH6ZMjDddevajVBw6vDSX+cKuwzlhoSoxP0ELmlgzWjjATBmGHii6H2vtumgSJixwPvM2yEmzABERZ7qesO/nXFVsCPrW9bujXtdLZ9//Xvsnhk8UkaZRnMZcgmZ6+y+BLI0MnBDMOcT2edZCqLQIDAQAB

CAT40 1/2 X 3″ End Mill Tool Holder

In Stock

SKU: CAT40EM05175


High Precision CAT40  End Mill Tool Holder

Balance: G2.5 25000rpm

High Precision Runout: TIR  5μm or 0.00015 ”

Protection: Silver Ni Coated  (will never rusty ever)


CAT40 End Mill Tool Holder

MODEL CAT40 1/2″X3″  RUN OUT (TIR) 0.00015″
BALANCE G2.5 25000rpm Gage Length 3″


High-Speed Cutting (G2.5 25000rpm) Balance

High Precision Runout: TIR  5μm or 0.00015

Hardened:  surface HRC58 inside is HRC45

Protection:  Nickel  Silver Coated



Automatically grinding outside arbor and er collet taper


Drawings & Parameters Table


DRAWBAR THREAD CAT40 5/8-11 UNC 1.75″ 2.69″ 2.5″

Related Tool Holder

Order NoModel (Silver Coated)L1(inch)D(inch)BalanceRun Out(TIR)
IC0001CAT40 ER16 2.5"2.51.1G2.5 /25000rpm0.003μm
IC0002CAT40 ER16 4"41.1G2.5 /25000rpm0.003μm
IC0003CAT40 ER16 6"61.1G2.5 /25000rpm0.003μm
IC0004CAT40 ER20 2.5"2.51.34G2.5 /25000rpm0.003μm
IC0005CAT40 ER20 4"41.34G2.5 /25000rpm0.003μm
IC0006CAT40 ER20 6"61.34G2.5 /25000rpm0.003μm
IC0007CAT40 ER25 2.5"2.51.65G2.5 /25000rpm0.003μm
IC0008CAT40 ER25 4"41.65G2.5 /25000rpm0.003μm
IC0009CAT40 ER25 6"61.65G2.5 /25000rpm0.003μm
IC0010CAT40 ER32 2.5"2.51.97G2.5 /25000rpm0.003μm
IC0011CAT40 ER32 4"41.97G2.5 /25000rpm0.003μm
IC0012CAT40 ER32 6"61.97G2.5 /25000rpm0.003μm
IC0013CAT40 ER40 4"42.48G2.5 /25000rpm0.003μm
IC0014CAT40 Er32 0.5"0.50.75G2.5 /25000rpm0.003μm
IC0015CAT40 ER11M 6"60.75G2.5 /25000rpm0.003μm
IC0016CAT40 ER11M 4"40.75G2.5 /25000rpm0.003μm
IC0017CAT40 ER16M 2"20.87G2.5 /25000rpm0.003μm
IC0018CAT40 ER16M 4"40.87G2.5 /25000rpm0.003μm
IC0019CAT40 ER20M 2"21.1G2.5 /25000rpm0.003μm
IC0020CAT40 ER20M 4"41.1G2.5 /25000rpm0.003μm

 Material Application

a. Quenched and tempered structural steel: The carbon content of this type of steel is generally about 0.25% to 0.55%. For structural parts of a given cross-sectional size, when quenched and tempered
along the cross-section during quenching and tempering (quenching and tempering), the mechanics
The performance is good. If the hardening is not penetrated and free ferrite appears in the microstructure, the toughness decreases. For steels with a tendency to temper brittleness,
such as manganese steel, chromium steel, nickel-chromium steel, etc., they should be cooled quickly
after tempering. The quenching critical diameter of this type of steel increases with the increase in grain size and alloying element content. For example, 40Cr and 35SiMn steel are about 30-40mm,
and 40CrNiMo and 30CrNi2MoV steel is about 60-100mm, which is often used in manufacturing Structural
parts such as shafts and connecting rods with large loads.cat40 end mill holder

b. Surface hardened structural steel: used to manufacture hard and wear-resistant surface parts and flexible parts, such as gears and shafts. In order to increase the toughness of the core of the part,
the carbon content in the steel should be low, generally 0.12 to 0.25%, and there is also an appropriate amount of alloy elements to ensure proper hardenability. Nitrided steel also needs to add alloy elements (such as Al, Cr, Mo, etc.) that are easy to form nitrides. Carburized or carbonitrided steel, after carburizing or carbonitriding at 850~950℃, quenched and used under low-temperature tempering (about 200℃). The nitrided steel is directly treated by nitriding
(480~580℃), and it is no longer quenched and tempered.


er collet chuck cat40 er32 er11 collet er collet er32 collet set er20 collet sizes er50 collet chuck er20 collet chuck
er collet holder cat40 er16 er32 collet er20 collet er16 collet er25 collet er40 collet er32 collet chuck


Weight 1.5 lbs
Dimensions 15 × 45 × 65 in