CAT 40 Taper End Mill Holders

Securely grip end mills in machines with a CAT 40 taper spindle. Holders have threads on the tapered end to hold retention knobs that fit your machine.
For technical drawings and 3-D models, click on a part number.
Shank | Head | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
For End Mill Shank Dia. | For Number of End Mill Milling Ends | Thread Size | Thread Gender | Dia. | Lg. | Material | Fabrication | Includes | Each | |
1/8" | 1, 2 | 5/8"-11 | Female | 3/4" | 2 3/8" | Steel | Heat Treated | Set Screws | 000000000 | 0000000 |
3/16" | 1, 2 | 5/8"-11 | Female | 3/4" | 2 1/2" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
1/4" | 1, 2 | 5/8"-11 | Female | 51/64" | 2 1/2" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
3/8" | 1, 2 | 5/8"-11 | Female | 1" | 2 1/2" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
1/2" | 1, 2 | 5/8"-11 | Female | 1 3/8" | 2 1/2" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
1/2" | 1, 2 | 5/8"-11 | Female | 1 3/8" | 4" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
5/8" | 1, 2 | 5/8"-11 | Female | 1 21/32" | 3" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
3/4" | 1, 2 | 5/8"-11 | Female | 1 3/4" | 3" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
1" | 1, 2 | 5/8"-11 | Female | 2 3/8" | 4" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
1 1/4" | 1, 2 | 5/8"-11 | Female | 2 1/2" | 4" | Steel | Heat Treated | Set Screws | 000000000 | 000000 |
Collet Chucks

Securely hold collets in the spindle of a milling machine.
Use a nut wrench (sold separately) to tighten the chuck nut and secure the tool bit in the collet.
For technical drawings and 3-D models, click on a part number.
Collet Chucks | Nut Wrenches | Replacement Nuts | ||||||
---|---|---|---|---|---|---|---|---|
For Collet Type | Projection | Material | Each | Each | Each | |||
CAT 40 Taper | ||||||||
100-TG | 2 3/4" | Steel | 00000000 | 0000000 | 00000000 | 000000 | 00000000 | 000000 |
100-TG | 3 1/2" | Steel | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 |
ER-11 | 2 1/2" | Steel | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 |
ER-11 | 6" | Steel | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 |
ER-16 | 2 1/4" | Steel | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 |
ER-16 | 3 1/2" | Steel | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 |
ER-20 | 2 1/2" | Steel | 0000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
ER-25 | 2 1/2" | Steel | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 |
ER-25 | 6" | Steel | 00000000 | 000000 | 00000000 | 00000 | 00000000 | 00000 |
ER-32 | 3/4" | Steel | 00000000 | 000000 | 000000 | 00 | 00000000 | 00000 |
ER-32 | 3 1/8" | Steel | 0000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
ER-32 | 5" | Steel | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
ER-32 | 9" | Steel | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
Retention Knobs




Attach tool holders such as collet chucks and end mill holders to your CNC machine’s spindle. For proper operation, choose a knob that exactly matches your collet type and spindle dimensions. All meet industrial standards for tensile and shear strength. These knobs are also known as pull studs.
Knobs with a coolant hole let coolant flow through to protect your tools and workpiece.
For technical drawings and 3-D models, click on a part number.
Grip Angle | Projection | Head Dia. | Collar Dia. | Head-to-Flange Lg. | Flange Thick. | ID | Torque Range | Material | Features | Manufacturer | Manufacturer Model No. | Specifications Met | Each | |
CAT 40 Taper | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5/8"-11 | ||||||||||||||
15° | 1.03" | 0.748" | 0.512" | 0.793" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C40-1500 | ISO 7388-3, JIS B 6339 | 0000000 | 000000 |
15° | 1.03" | 0.748" | 0.641" | 0.793" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | C40-1500(R) | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
15° | 1.03" | 0.748" | 0.641" | 0.793" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | C40-1500-MORI | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
30° | 1.266" | 0.591" | 0.512" | 0.99" | 0.24" | __ | 44 ft.-lbs. to 59 ft.-lbs. | Steel | __ | Lyndex Nikken | C40S-6000 | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
45° | 0.64" | 0.74" | 0.512" | 0.433" | 0.12" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C40-STD | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
45° | 0.64" | 0.74" | 0.641" | 0.44" | 0.12" | 0.157" | Not Rated | Steel | O-Ring, Coolant Hole | Lyndex Nikken | PS-B64-1 | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
45° | 1.266" | 0.591" | 0.512" | 0.99" | 0.24" | __ | 44 ft.-lbs. to 59 ft.-lbs. | Steel | __ | Lyndex Nikken | C40S-4500 | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
45° | 1.266" | 0.591" | 0.512" | 0.99" | 0.24" | 0.177" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C40S-4500(H) | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
Carts for CNC Tooling

Store, transport, and protect CNC tooling. These heavy duty steel carts have wear-resistant nylon inserts that keep tools clean and prevent damage. They have two tooling shelves—an upper tooling shelf that is flat and a lower tooling shelf that is angled on both sides for easy access.
Overall | Wheel | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shank Taper Number | Tool Holder Capacity | Number of Shelves | Lg. | Wd. | Ht. | Cap., lbs. | Caster Type | Material | Dia. | Assembled or Unassembled | Wt., lbs. | Each | |
BT 40, CAT 40, NMTB 40 | 48 | 3 | 35 1/4" | 18" | 35" | 1,000 | Two Rigid and Two Swivel Casters with Brakes | Plastic | 5" | Unassembled | 79 | 0000000 | 0000000 |
Spindle Cleaners

Increase precision and prolong the life of your tooling by cleaning out chips, dust, and coolant from your machine's tapered spindle. Cleaners are plastic for good oil resistance.
Diameter | |||||||
---|---|---|---|---|---|---|---|
For Machine Spindle Type | Min. | Max. | Taper Lg. | Overall Lg. | Material | Each | |
CAT 40 Taper | 0.97" | 1.75" | 3.1" | 7 1/2" | Plastic | 0000000 | 000000 |