CAT 50 Precision ER Tool Holders

CAT 50 ER Collet Chuck tool holder

Techniks Certified for accuracy and balance.
Each holder comes with a complete lab report

dimensional drawing of CAT 40 er collet chuck

Voted Best Collet Chuck!

  • Balanced to 25,000 RPM at G2.5
  • T.I.R. 0.0001" measured from taper to collet pocket
  • PowerCOAT nut included for 75% more clamping power

ER collet chucks handle a wide range of machining jobs without having to buy new tool holders. Simply choose the right size collet for the job, set tool depth, and tighten the collet nut and pull stud to the proper torque using a torque wrench and tightening fixure.

Collets are available for: drilling, milling, coolant thru, and high-speed applications. Special “DNADead Nuts Accurate collets are used for small drills (6mm and smaller) to maintain T.I.R. at those sizes.

Use "Power Coat" nuts to increase the holding power and safety of your tool holders. High holding power extends cutting tool life and improves surface finish.

CAT 50 ER Collet Chuck Tool Holders

Refer to chart below to order CAT 50 ER collet chuck tool holders.Click part number link to download CAD file.

Note: ER 16 and ER 20 tool holders come with hex nut standard. For slotted nuts simply ad SLOTNUT to the end of the part number.

Part No.
Description
L1
D
Collet
Max. Shank
Set Screw
Wrench
22281 CAT 50 x ER 16 - 4, hex nut
4"
1.08"
ER 16
.406"
16083
04609
22285 CAT 50 x ER 16 - 6, hex nut
6"
1.08"
ER 16
.406"
16083
04609
22287 CAT 50 x ER 16 - 8, hex nut
8"
1.08"
ER 16
.406"
16083
04609
22291 CAT 50 x ER 20 - 4, hex nut
4"
1.34"
ER 20
.512"
16087
04610
22293 CAT 50 x ER 20 - 6, hex nut
6"
1.34"
ER 20
.512"
16087
04610
22295 CAT 50 x ER 20 - 8, hex nut
8"
1.34"
ER 20
.512"
16087
04610
22303 CAT 50 x ER 25 - 4, slotted nut
4"
1.65"
ER 25
.630"
16089
04615
22305 CAT 50 x ER 25 - 6, slotted nut
6"
1.65"
ER 25
.630"
16089
04615
22307 CAT 50 x ER 25 - 8, slotted nut
8"
1.65"
ER 25
.630"
16089
04615
22307-9 CAT 50 x ER 25 - 9, slotted nut
9"
1.65"
ER 25
.630"
16089
04615
22311 CAT 50 x ER 32 - 4, slotted nut
4"
1.97"
ER 32
.788"
16089
04616
22313 CAT 50 x ER 32 - 6, slotted nut
6"
1.97"
ER 32
.788"
16089
04616
22317 CAT 50 x ER 32 - 8, slotted nut
8"
1.97"
ER 32
.788"
16089
04616
22321 CAT 50 x ER 40 - 4, slotted nut
4"
2.48"
ER 40
1.023"
16091
04617
22325 CAT 50 x ER 40 - 6, slotted nut
6"
2.48"
ER 40
1.023"
16091
04617
22327 CAT 50 x ER 40 - 8, slotted nut
8"
2.48"
ER 40
1.023"
16091
04617
22331 CAT 50 x ER 50 - 4, slotted nut
4"
3.07"
ER 50
1.338"
16093
04618
22335 CAT 50 x ER 50 - 6, slotted nut
6"
3.07"
ER 50
1.338"
16093
04618
22337 CAT 50 x ER 50 - 8, slotted nut
8"
3.07"
ER 50
1.338"
16093
04618