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 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 |
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 |
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 |
Boring Tool Holders for Milling Machines
Instead of widening a hole using a lathe, which turns the workpiece while the cutting tool stays still, use these holders to turn your boring bar in a milling machine and keep the workpiece stationary. They’re good for creating holes that are too large to drill or a diameter you don’t have a drill bit for. To help you bore holes to precise diameters, these holders have an adjustment dial with fine increments. Mount them in your milling machine using their shank. They’re also known as boring heads.
Holders for interchangeable shanks work with various hole sizes and machines. Add a compatible shank, these holders do not include one.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tool Bit Shank Diameter | Length | Diameter | Thread Size | Head Diameter | Offset Travel | Vertical Hole Spacing | Overall Length | Material | Features | Each | |
Holder with Straight Shank | |||||||||||
| 3/8" | 2 5/8" | 3/4" | __ | 2" | 0.75" | 0.625" | 5 1/16" | Steel | Adjustment Dial | 00000000 | 0000000 |
| 1/2" | 2 5/8" | 3/4" | __ | 2 1/2" | 0.75" | 0.75" | 5 13/16" | Steel | Adjustment Dial | 00000000 | 000000 |
| 5/8" | 2 5/8" | 3/4" | __ | 2 1/2" | 0.75" | 0.75" | 5 13/16" | Steel | Adjustment Dial | 00000000 | 000000 |
| 3/4" | 2 5/8" | 1" | __ | 3" | 1.25" | 0.938" | 6 1/8" | Steel | Adjustment Dial | 00000000 | 000000 |
Holder with R8 Taper Shank | |||||||||||
| 3/8" | 4" | __ | __ | 2" | 0.75" | 0.625" | 6 7/16" | Steel | Adjustment Dial | 00000000 | 000000 |
| 1/2" | 4" | __ | __ | 2 1/2" | 0.75" | 0.75" | 7 3/16" | Steel | Adjustment Dial | 00000000 | 000000 |
| 5/8" | 4" | __ | __ | 2 1/2" | 0.75" | 0.75" | 7 3/16" | Steel | Adjustment Dial | 00000000 | 000000 |
| 3/4" | 4" | __ | __ | 3" | 1.25" | 0.938" | 7 1/2" | Steel | Adjustment Dial | 00000000 | 000000 |
Holder for Interchangeable Shanks | |||||||||||
| 3/8" | __ | __ | 7/8"-20 | 2" | 0.75" | 0.625" | 2 7/16" | Steel | Adjustment Dial | 00000000 | 000000 |
| 1/2" | __ | __ | 7/8"-20 | 2 1/2" | 0.75" | 0.75" | 3 3/16" | Steel | Adjustment Dial | 0000000 | 000000 |
| 5/8" | __ | __ | 7/8"-20 | 2 1/2" | 0.75" | 0.75" | 3 3/16" | Steel | Adjustment Dial | 00000000 | 000000 |
| 3/4" | __ | __ | 1 1/2"-18 | 3" | 1.25" | 0.313" | 3 1/2" | Steel | Adjustment Dial | 00000000 | 000000 |
Shank | ||||||||
|---|---|---|---|---|---|---|---|---|
| Thread Size | Morse Taper Size | Machine Taper Size | Length | Diameter | Material | Includes | Each | |
Straight Shank | ||||||||
| 7/8"-20 | __ | __ | 2 5/8" | 1/2" | Steel | __ | 0000000 | 000000 |
| 7/8"-20 | __ | __ | 2 5/8" | 3/4" | Steel | __ | 00000000 | 00000 |
| 1 1/2"-18 | __ | __ | 2 5/8" | 1" | Steel | __ | 00000000 | 00000 |
R8 Taper Shank | ||||||||
| 7/8"-20 | __ | __ | 4" | __ | Steel | __ | 00000000 | 00000 |
| 1 1/2"-18 | __ | __ | 4" | __ | Steel | __ | 00000000 | 00000 |
Morse Taper Shank | ||||||||
| 7/8"-20 | 3 | __ | 3 7/8" | __ | Steel | Tang | 00000000 | 00000 |
| 1 1/2"-18 | 4 | __ | 4 7/8" | __ | Steel | Tang | 00000000 | 00000 |
Machine Taper Shank | ||||||||
| 7/8"-20 | __ | #40 | 3 3/4" | __ | Steel | Draw Bar, Drive Flange | 00000000 | 000000 |
| 1 1/2"-18 | __ | #40 | 3 3/4" | __ | Steel | Draw Bar, Drive Flange | 00000000 | 000000 |