R8 Taper Arbors for Slitting Saws
Mount this arbor into manual milling machines that have an R8 taper spindle. It has a spring-loaded centering mechanism which allows it to hold saws with a range of arbor holes sizes. Use with high-speed steel slitting saws.
For Max. Cutter | Shank Thread | Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Arbor Hole Size | Dia. | Thick. | Size | Gender | Dia. | Lg. | Overall Lg. | Material | Includes | Each | |
| 1/2", 5/8", 3/4", 7/8", 1" | 4" | 3/16" | 7/16"-20 | Female | 1 1/4" | 3/8" | 4 13/16" | Steel | Hex Key | 0000000 | 000000 |
Arbors for Face Milling Cutters
Mount large-diameter milling cutters securely in Bridgeport and similar milling machines that have an R8 taper spindle.
Shank Thread | Head | Nose | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Arbor Hole Size | Size | Gender | Dia. | Lg. | Dia. | Lg. | For Keyway Wd. | Material | Fabrication | Each | |
| 1/2" | 7/16"-20 | Female | 1 3/8" | 1" | 1/2" | 9/16" | 1/4" | Steel | Heat Treated | 0000000 | 0000000 |
| 3/4" | 7/16"-20 | Female | 2" | 1" | 3/4" | 11/16" | 5/16" | Steel | Heat Treated | 0000000 | 000000 |
| 1" | 7/16"-20 | Female | 2.38" | 1" | 1" | 11/16" | 3/8" | Steel | Heat Treated | 0000000 | 000000 |
| 1 1/4" | 7/16"-20 | Female | 2.88" | 1" | 1 1/4" | 11/16" | 1/2" | Steel | Heat Treated | 0000000 | 000000 |
| 1 1/2'' | 7/16"-20 | Female | 3 1/2" | 1 3/4" | 1 1/2" | 1" | 5/8" | Steel | Heat Treated | 0000000 | 000000 |
End Mill Extensions
Extend the reach of an end mill. Sets screws hold the end mill in place.
For technical drawings and 3-D models, click on a part number.
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.
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 |
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 | 000000000 |
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 |
R8 Taper Drill Chuck Arbors
Use with R8 taper spindles which are most often found on manual milling machines. The R8 taper end fits into a machine spindle and the Jacobs taper end is compatible with a Jacobs taper drill chuck. All arbors are made of hardened, precision-ground steel.
For technical drawings and 3-D models, click on a part number.
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 |
CAT 50 Taper | ||||||||||||||
1"-8 | ||||||||||||||
| 30° | 1.772" | 0.906" | 1.024" | 1.378" | 0.39" | 0.236" | 85 ft.-lbs. to 110 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | PS-B61 | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
| 45° | 1" | 1.142" | 0.768" | 0.701" | 0.2" | 0.461" | 85 ft.-lbs. to 110 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C50-STD | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
| 45° | 1.78" | 0.906" | 0.827" | 1.386" | 0.39" | 0.236" | 85 ft.-lbs. to 110 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | C50-4500(H) | ISO 7388-3, JIS B 6339 | 0000000 | 00000 |
BT 30 Taper | ||||||||||||||
M12 × 1.75 mm | ||||||||||||||
| 30° | 0.906" | 0.433" | 0.492" | 0.709" | 0.2" | __ | 16 ft.-lbs. to 18 ft.-lbs. | Steel | __ | Lyndex Nikken | B30-6000 | JIS B 6339 | 0000000 | 00000 |
| 45° | 0.906" | 0.433" | 0.492" | 0.709" | 0.2" | __ | 16 ft.-lbs. to 18 ft.-lbs. | Steel | __ | Lyndex Nikken | B30-4500 | JIS B 6339 | 0000000 | 00000 |
BT 40 Taper | ||||||||||||||
M16 × 2 mm | ||||||||||||||
| 15° | 1.142" | 0.748" | 0.669" | 0.906" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | B40-1500(R) | JIS B 6339 | 0000000 | 00000 |
| 15° | 1.142" | 0.748" | 0.669" | 0.906" | 0.28" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | B40-1500 | JIS B 6339 | 0000000 | 00000 |
| 15° | 1.142" | 0.748" | 0.669" | 0.906" | 0.34" | 0.276" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | O-Ring, Coolant Hole | Lyndex Nikken | B40-1500-MORI | JIS B 6339 | 0000000 | 00000 |
| 45° | 0.752" | 0.74" | 0.669" | 0.552" | 0.24" | __ | 44 ft.-lbs. to 59 ft.-lbs. | Steel | __ | Lyndex Nikken | B40-FADAL | JIS B 6339 | 0000000 | 00000 |
| 45° | 1.378" | 0.591" | 0.669" | 1.102" | 0.24" | __ | 44 ft.-lbs. to 59 ft.-lbs. | Steel | __ | Lyndex Nikken | B40-4500 | JIS B 6339 | 0000000 | 00000 |
| 45° | 1.378" | 0.591" | 0.669" | 1.102" | 0.24" | 0.181" | 44 ft.-lbs. to 59 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | B40-4500(H) | JIS B 6339 | 0000000 | 00000 |
BT 50 Taper | ||||||||||||||
M24 × 3 mm | ||||||||||||||
| 45° | 1.772" | 0.906" | 0.984" | 1.378" | 0.39" | __ | 85 ft.-lbs. to 110 ft.-lbs. | Steel | __ | Lyndex Nikken | B50-4500 | JIS B 6339 | 0000000 | 00000 |
| 45° | 1.772" | 0.906" | 0.984" | 1.378" | 0.39" | 0.276" | 85 ft.-lbs. to 110 ft.-lbs. | Steel | Coolant Hole | Lyndex Nikken | B50-4500(H) | JIS B 6339 | 0000000 | 00000 |