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R8 Collets
Use these collets to securely hold round-shank tool bits in the R8 spindle of a milling machine. They have internal threads.
For technical drawings and 3-D models, click on a part number.
| Collet Size | TIR (Total Indicated Runout) Accuracy | Workpiece Dia. Tolerance | Body Dia. | Overall Lg. | Internal Thread Size  | Material | Each | |
Round | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/16" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 000000 |
| 3/32" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 1/8" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 5/32" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 3/16" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 7/32" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 1/4" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 9/32" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 5/16" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 11/32" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 3/8" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 13/32" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 7/16" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 15/32" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 1/2" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 17/32" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 9/16" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 19/32" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 5/8" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 21/32" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 11/16" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 23/32" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 3/4" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 25/32" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 13/16" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 27/32" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 7/8" | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 1" | 0.0011" | -0.004" to 0" | 0.95" | 4.7" | 7/16"-20 | Steel | 0000000 | 00000 |
| 3mm | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 4mm | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 5mm | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 6mm | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 7mm | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 8mm | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 9mm | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 10mm | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 11mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 12mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 13mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 14mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 15mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 16mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 17mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 18mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 19mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
| 20mm | 0.0011" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 00000 |
R8 Collet Sets
8-Piece Set
13-Piece Set
Use these collets to securely hold round-shank tool bits in the R8 spindle of a milling machine. They have internal threads.
For technical drawings and 3-D models, click on a part number.
| No. of Pieces | Collet Sizes Included | Workpiece Dia. Tolerance | Body Dia. | Overall Lg. | Internal Thread Size | Material | Each | |
Round | ||||||||
|---|---|---|---|---|---|---|---|---|
| 8 | 1/8", 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 0000000 |
| 13 | 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 000000 |
Collet Chucks
R8 Taper
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.
Quick-Change Tool Holders for Milling Machines
After installing the R8 body in the milling machine spindle, tool holders can be switched out in seconds. To remove a tool holder, depress the brass locking button and rotate the collar on the R8 body. When a new tool holder is inserted, a spring-loaded pin snaps the collar back into the locked position.
R8 Body
R8 Taper Shank Thread | ||||||
|---|---|---|---|---|---|---|
| TIR (Total Indicated Runout) Accuracy | Gender | Size | Spindle Overhang | Material | Each | |
| 0.0005" | Female | 7/16"-20 | 1 1/8" | Steel | 0000000 | 0000000 |
End Mill Holder
Head | For End Mill | ||||||
|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Number of Milling Ends | Shank Type | Shank Dia. | Material | Each | |
| 1 3/8" | 1/2" | 1 | Straight | 1/8" | Steel | 0000000 | 0000000 |
| 1 3/8" | 11/16" | 1 | Straight | 3/16" | Steel | 0000000 | 000000 |
| 1 3/8" | 11/16" | 1 | Straight | 1/4" | Steel | 0000000 | 000000 |
| 1 3/8" | 1 3/16" | 1 | Straight | 3/8" | Steel | 0000000 | 000000 |
| 1 3/8" | 1 3/8" | 1 | Straight | 1/2" | Steel | 0000000 | 000000 |
| 1 5/8" | 1 9/16" | 1 | Straight | 5/8" | Steel | 0000000 | 000000 |
| 2 3/16" | 1 13/16" | 1 | Straight | 3/4" | Steel | 0000000 | 000000 |
| 2 15/16" | 2" | 1 | Straight | 1" | Steel | 0000000 | 000000 |
Tool Holder Stand
Overall | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ht. | Wd. | Dp. | For Number of Tools | Number of Mounting Holes | Mounting Hole Dia. | Material | Each | |
| 1 1/2" | 8 3/4" | 12 1/4" | 10 | 4 | 3/16" | Steel | 0000000 | 0000000 |
R8 Taper End Mill Holders
Hold end mills, drills, and reamers securely in manual milling machines that have an R8 taper spindle. Holders are ground to accurate size.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For End Mill Shank Dia. | For Number of End Mill Milling Ends | Internal Thread Size | Dia. | Lg. | Material | Fabrication | Includes | Each | |
| 1/8" | 1 | 7/16"-20 | 3/4" | 1 3/8" | Steel | Heat Treated | Set Screws | 0000000 | 000000 |
| 3/16" | 1, 2 | 7/16"-20 | 3/4" | 1 3/8" | Steel | Heat Treated | Set Screws | 0000000 | 00000 |
| 1/4" | 1, 2 | 7/16"-20 | 51/64" | 1 3/8" | Steel | Heat Treated | Set Screws | 0000000 | 00000 |
| 5/16" | 1 | 7/16"-20 | 7/8" | 1 3/4" | Steel | Heat Treated | Set Screws | 0000000 | 00000 |
| 3/8" | 1, 2 | 7/16"-20 | 1" | 1 3/8" | Steel | Heat Treated | Set Screws | 0000000 | 00000 |
| 1/2" | 1 | 7/16"-20 | 1 3/8" | 1 3/8" | Steel | Heat Treated | Set Screws | 0000000 | 00000 |
| 5/8" | 1 | 7/16"-20 | 1 21/32" | 1 1/2" | Steel | Heat Treated | Set Screws | 0000000 | 00000 |
| 3/4" | 1 | 7/16"-20 | 1 57/64" | 2 3/8" | Steel | Heat Treated | Set Screws | 0000000 | 000000 |
| 7/8" | 1 | 7/16"-20 | 2" | 2 3/4" | Steel | Heat Treated | Set Screws | 0000000 | 000000 |
| 1" | 1 | 7/16"-20 | 2 3/8" | 3 1/4" | Steel | Heat Treated | Set Screws | 0000000 | 000000 |
| 1 1/4" | 1 | 7/16"-20 | 2 1/2" | 3 1/4" | Steel | Heat Treated | Set Screws | 0000000 | 000000 |
| 1 1/2" | 1 | 7/16"-20 | 3" | 3 3/4" | Steel | Heat Treated | Set Screws | 0000000 | 000000 |
Morse Taper to R8 Taper Milling Machine Adapters
Convert tools with a Morse taper shank to an R8 shank for use in manual milling machines that have an R8 taper spindle. Holders are ground to accurate size.