Machine-Your-Own Inside-Grip 5C Collets
The head on these collets acts like a mandrel to support the inside of a hollow workpiece. An expanding screw widens the head to firmly grip the workpiece. It can be machined to fit the exact ID of your part. All have external threads.
| Head Dia. | Head Thick. | Min. Machined Dia. | Body Dia. | Overall Lg. | External Thread Size  | TIR (Total Indicated Runout) Accuracy | Material | Each | |
| 1/2" | 1" | 0.25" | 1 1/4" | 4 1/2" | 1.234"-20 | 0.0005" | Steel | 0000000 | 000000 |
| 1" | 1" | 0.437" | 1 1/4" | 4 1/2" | 1.234"-20 | 0.0005" | Steel | 0000000 | 00000 |
| 1" | 2" | 0.437" | 1 1/4" | 5 1/2" | 1.234"-20 | 0.0005" | Steel | 0000000 | 000000 |
| 1 1/2" | 1" | 0.75" | 1 1/4" | 4 1/2" | 1.234"-20 | 0.0005" | Steel | 0000000 | 00000 |
| 1 1/2" | 1 1/2" | 0.75" | 1 1/4" | 5" | 1.234"-20 | 0.0005" | Steel | 0000000 | 000000 |
| 2" | 1" | 0.75" | 1 1/4" | 4 1/2" | 1.234"-20 | 0.0005" | Steel | 0000000 | 000000 |
| 2" | 1 1/2" | 0.75" | 1 1/4" | 5" | 1.234"-20 | 0.0005" | Steel | 0000000 | 000000 |
| 2 1/2" | 2 1/2" | 0.75" | 1 1/4" | 6" | 1.234"-20 | 0.0005" | Steel | 0000000 | 000000 |
Expanding-End Lathe Mandrels
An expanding screw widens the end of the mandrel for a tight hold on the inside of a workpiece. These mandrels are machinable to fit the exact ID of your part. Mandrels are also known as arbors.
| OD | Overall Lg. | Shank Dia. | End Expansion | Material | Each | |
| 1/4" | 3" | 1/4" | 0.002" | Steel | 0000000 | 000000 |
| 3/8" | 3" | 3/8" | 0.002" | Steel | 0000000 | 00000 |
| 1/2" | 3" | 1/2" | 0.002" | Steel | 0000000 | 00000 |
| 5/8" | 3" | 5/8" | 0.002" | Steel | 0000000 | 00000 |
| 3/4" | 4" | 3/4" | 0.002" | Steel | 0000000 | 00000 |
| 7/8" | 4" | 7/8" | 0.002" | Steel | 0000000 | 00000 |
| 1" | 4" | 1" | 0.002" | Steel | 0000000 | 00000 |
| 1 1/4" | 4" | 1" | 0.002" | Steel | 0000000 | 00000 |
| 1 1/2" | 4" | 1" | 0.002" | Steel | 0000000 | 00000 |
| 1 3/4" | 4" | 1" | 0.002" | Steel | 0000000 | 00000 |
Expanding-End Lathe Mandrel Sets
An expanding screw widens the end of the mandrel for a tight hold on the inside of a workpiece. These mandrels are machinable to fit the exact ID of your part. Mandrels are also known as arbors.
| Number of Pieces | Includes | End Expansion | Material | Each | |
| 8 | Five Hex Keys One 1 1/4" OD × 1" Shank Dia × 4" Lg. Expanding-End Mandrel One 1" OD × 1" Shank Dia × 4" Lg. Expanding-End Mandrel One 1/2" OD × 1/2" Shank Dia × 3" Lg. Expanding-End Mandrel One 1/4" OD × 1/4" Shank Dia × 3" Lg. Expanding-End Mandrel One 3/4" OD × 3/4" Shank Dia × 4" Lg. Expanding-End Mandrel One 3/8" OD × 3/8" Shank Dia × 3" Lg. Expanding-End Mandrel One 5/8" OD × 5/8" Shank Dia × 3" Lg. Expanding-End Mandrel One 7/8" OD × 7/8" Shank Dia × 4" Lg. Expanding-End Mandrel Stand | 0.002" | Steel | 0000000 | 0000000 |
Solid Lathe Mandrels
Use an arbor press to secure the narrow end of one of these tapered mandrels into the hole of a workpiece. The wide end has a flat for use with a lathe driver when turning between centers. Mandrels are also known as arbors.
| OD | Overall Lg. | Taper per Inch | Tapered End Tolerance | Material | Each | |
| 1/8" | 2 1/2" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 000000 |
| 3/16" | 3" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 1/4" | 3 3/4" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 5/16" | 4" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 3/8" | 4 1/4" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 7/16" | 4 1/2" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 1/2" | 5" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 9/16" | 5 1/4" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 5/8" | 5 1/2" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 3/4" | 6" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 7/8" | 6 1/2" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
| 1" | 7" | 0.0005" | -0.0005" to 0" | Steel | 0000000 | 00000 |
Wide-Diameter Range Lathe Mandrels
The sleeve on these mandrels expands to hold a range of IDs for better versatility than solid and expanding-end mandrels. They can hold the workpiece at any position along the sleeve. To use, insert the sleeve into the workpiece before inserting the small end of the tapered body into the sleeve and pushing until it's tight. Mandrels are also known as arbors.
| OD | Overall Lg. | Sleeve Lg. | Sleeve Accuracy | Material | Each | |
| 1/2"-9/16" | 5" | 2 1/2" | 0.001" TIR | Steel | 0000000 | 000000 |
| 9/16"-21/32" | 6" | 2 3/4" | 0.001" TIR | Steel | 0000000 | 00000 |
| 21/32"-3/4" | 7" | 2 3/4" | 0.001" TIR | Steel | 0000000 | 00000 |
| 3/4"-7/8" | 7" | 3 1/4" | 0.001" TIR | Steel | 0000000 | 00000 |
| 7/8"-1" | 7" | 3 1/2" | 0.001" TIR | Steel | 0000000 | 00000 |
| 1"-1 1/4" | 9" | 4" | 0.001" TIR | Steel | 0000000 | 000000 |
| 1 1/4"-1 1/2" | 9" | 4" | 0.001" TIR | Steel | 0000000 | 000000 |
| 1 1/2"-2" | 11 1/2" | 5" | 0.001" TIR | Steel | 0000000 | 000000 |
| 2"-2 3/4" | 14" | 6" | 0.001" TIR | Steel | 0000000 | 000000 |
| 2 3/4"-3 3/4" | 17" | 7" | 0.001" TIR | Steel | 0000000 | 000000 |
Live Centers
Keep your workpiece spinning while staying supported when machining. These live centers spin with your piece to reduce friction between their point and your material. For smooth rotation, these centers turn on lubricated bearings. The bearings are enclosed to protect against chips and liquid. With a hardened body and point for extra strength and wear resistance, these live centers will hold up, use after use. Use them in the tailstock with manual or CNC lathes.
Precision centers wobble less than standard live centers for six to eight times greater accuracy as they spin.
Extended point and extended-cone point centers make it easier to machine complex shapes and features as they give you extra tool clearance for CNC machining. Extended-cone point centers are multipurpose—use the extended point to support solid workpieces or the cone point to support hollow workpieces such as pipes and tubes.
Bull-nose point centers have a wide head to hold large-diameter hollow pipe and tubing. Choose an 80° point angle for more contact area and less vibration than a 60° point angle. High-speed centers for pipe and tubing are rated to twice the speed as standard centers.
TIR (total indicated runout) is a measure of rotational smoothness—the lower the value, the less wobble a rotating tool will have and the more accurate it will be.
| Morse Taper Number | Max. Workpiece Cap., lbs. | Max. Speed, rpm | TIR (Total Indicated Runout) Accuracy | Point Dia. | Head Dia. | Point Lg. | Overall Lg. | Point Angle | Material | Each | |
Standard Point | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 220 | 5,000 | 0.0003" | 0.59" | 1 1/2" | 45/64" | 4 1/16" | 60° | Hardened Steel | 0000000 | 0000000 |
| 2 | 460 | 5,000 | 0.0003" | 0.7" | 1 9/16" | 7/8" | 4 47/64" | 60° | Hardened Steel | 0000000 | 000000 |
| 3 | 925 | 4,000 | 0.0003" | 0.98" | 2 13/64" | 1 1/8" | 6 9/64" | 60° | Hardened Steel | 0000000 | 000000 |
| 4 | 1,850 | 3,000 | 0.0003" | 1.1" | 2 33/64" | 1 15/64" | 7 15/64" | 60° | Hardened Steel | 0000000 | 000000 |
| 5 | 4,400 | 2,500 | 0.0003" | 1.61" | 3 11/32" | 1 49/64" | 9 21/64" | 60° | Hardened Steel | 0000000 | 000000 |
| 6 | 7,700 | 2,000 | 0.0004" | 2.48" | 5 1/8" | 2 33/64" | 13 1/8" | 60° | Hardened Steel | 0000000 | 000000 |
| 7 | 20,900 | 1,000 | 0.0004" | 2.95" | 5 29/32" | 2 57/64" | 17 19/32" | 60° | Hardened Steel | 0000000 | 00000000 |
Precision Standard Point | |||||||||||
| 2 | 725 | 6,000 | 0.00005" | 0.875" | 1 3/4" | 1 1/64" | 5 19/64" | 60° | Hardened Steel | 0000000 | 000000 |
| 3 | 970 | 5,000 | 0.00005" | 1" | 2 11/32" | 1 15/64" | 6 13/32" | 60° | Hardened Steel | 0000000 | 000000 |
| 4 | 1,720 | 4,500 | 0.00005" | 1.25" | 2 11/16" | 1 31/64" | 7 57/64" | 60° | Hardened Steel | 0000000 | 00000000 |
| 5 | 3,260 | 3,500 | 0.00005" | 1.5" | 3 29/64" | 1 27/32" | 10 13/64" | 60° | Hardened Steel | 0000000 | 00000000 |
| 6 | 4,080 | 3,500 | 0.00005" | 2" | 4" | 2 5/16" | 13 13/64" | 60° | Hardened Steel | 0000000 | 00000000 |
Precision Extended Point | |||||||||||
| 2 | 375 | 6,000 | 0.00005" | 0.88" | 1 3/4" | 1 11/32" | 5 5/8" | 60° | Hardened Steel | 0000000 | 000000 |
| 3 | 740 | 5,000 | 0.00005" | 1" | 2 21/64" | 1 55/64" | 7 3/64" | 60° | Hardened Steel | 0000000 | 000000 |
| 4 | 1,120 | 4,500 | 0.00005" | 1.25" | 2 11/16" | 2 3/16" | 8 19/32" | 60° | Hardened Steel | 0000000 | 000000 |
| 5 | 1,930 | 3,500 | 0.00005" | 1.5" | 3 29/64" | 2 37/64" | 10 61/64" | 60° | Hardened Steel | 0000000 | 00000000 |
| 6 | 2,420 | 3,500 | 0.00005" | 2" | 4" | 3" | 13 29/32" | 60° | Hardened Steel | 0000000 | 00000000 |
Extended-Cone Point—Multipurpose | |||||||||||
| 2 | 330 | 5,000 | 0.0001" | 2.25" | __ | 2 17/64" | 5 3/4" | 60° | Hardened Steel | 0000000 | 000000 |
| 3 | 685 | 4,000 | 0.0001" | 2.63" | __ | 2 21/32" | 6 15/16" | 60° | Hardened Steel | 0000000 | 000000 |
| 4 | 1,160 | 3,500 | 0.0001" | 3.5" | __ | 3 31/64" | 8 11/16" | 60° | Hardened Steel | 0000000 | 000000 |
| 5 | 1,160 | 3,500 | 0.0001" | 3.5" | __ | 3 31/64" | 9 51/64" | 60° | Hardened Steel | 0000000 | 000000 |
Bull-Nose Point—For Pipe and Tubing | |||||||||||
| 2 | 2,000 | 2,500 | 0.00015" | 4" | __ | 3 29/32" | 6 27/32" | 60° | Hardened Steel | 0000000 | 000000 |
| 3 | 3,800 | 2,500 | 0.00015" | 4" | __ | 3 29/32" | 7 15/32" | 60° | Hardened Steel | 0000000 | 000000 |
| 4 | 1,760 | 3,000 | 0.0001" | 4.921" | __ | 2 1/4" | 7 9/32" | 80° | Hardened Steel | 0000000 | 000000 |
| 4 | 4,800 | 2,500 | 0.00015" | 4" | __ | 3 29/32" | 8 11/32" | 60° | Hardened Steel | 0000000 | 000000 |
| 5 | 3,520 | 2,000 | 0.0001" | 5.906" | __ | 2 3/4" | 8 29/32" | 80° | Hardened Steel | 0000000 | 00000000 |
| 5 | 4,800 | 2,500 | 0.00015" | 4" | __ | 3 29/32" | 9 15/32" | 60° | Hardened Steel | 0000000 | 000000 |
High-Speed Bull-Nose Point—For Pipe and Tubing | |||||||||||
| 3 | 2,700 | 7,000 | 0.0001" | 3.5" | __ | 2 5/32" | 6 31/32" | 60° | Hardened Steel | 0000000 | 000000 |
| 4 | 4,000 | 6,000 | 0.0001" | 4.5" | __ | 3 1/64" | 9 7/16" | 60° | Hardened Steel | 0000000 | 00000000 |
| 5 | 4,000 | 6,000 | 0.0001" | 4.5" | __ | 3 1/64" | 10 37/64" | 60° | Hardened Steel | 0000000 | 00000000 |
Dead Centers
Insert these in your headstock to support your workpiece when machining between centers. Unlike live centers, dead centers don’t spin freely, so they give you a fixed point to stabilize your material. You can also use them in the tailstock to support the end of the workpiece when friction isn’t a concern. Made of through-hardened 52100 alloy steel—a material originally developed for bearings—these centers have exceptional hardness, strength, and wear resistance. That means you'll have to replace them less often than centers made of low-quality steel. You can also apply high-pressure grease on the point to reduce friction and wear.
Pipe and tubing centers hold large-diameter, hollow workpieces. Also known as bull-nose centers.
Carbide-tipped hardened steel dead centers have better wear resistance than hardened steel dead centers. They’re ideal for high-volume work and holding highly abrasive and hard materials.
Hardened Steel | Carbide-Tipped Hardened Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Morse Taper Number | Point Dia. | Point Tip Dia. | Point Lg. | Overall Lg. | TIR (Total Indicated Runout) Accuracy | Each | Each | ||
Dead Centers | |||||||||
| 1 | 0.475" | __ | 1 3/16" | 3 5/16" | 0.00005" | 000000 | 0000000 | 00000000 | 0000000 |
| 2 | 0.7" | __ | 1 5/8" | 4 3/16" | 0.00005" | 0000000 | 000000 | 0000000 | 000000 |
| 3 | 0.938" | __ | 2 1/16" | 5 1/4" | 0.00005" | 0000000 | 000000 | 0000000 | 000000 |
| 4 | 1.231" | __ | 2 11/16" | 6 3/4" | 0.00005" | 0000000 | 000000 | 0000000 | 000000 |
| 5 | 1.748" | __ | 3 5/16" | 8 1/2" | 0.00005" | 0000000 | 000000 | 0000000 | 000000 |
| 6 | 2.494" | __ | 4 1/4" | 11 1/2" | 0.00005" | 0000000 | 000000 | 0000000 | 000000 |
| 7 | 3.27" | __ | 5" | 15" | 0.00005" | 0000000 | 000000 | 0000000 | 00000000 |
Dead Centers for Pipe and Tubing | |||||||||
| 2 | 2.13" | 1/2" | 2 13/32" | 5" | 0.00005" | 0000000 | 000000 | 000000 | 00 |
| 3 | 2.75" | 1" | 2 33/64" | 5 3/4" | 0.00005" | 0000000 | 000000 | 0000000 | 000000 |
| 4 | 2.75" | 1" | 2 33/64" | 6 9/16" | 0.00005" | 0000000 | 000000 | 0000000 | 00000000 |
| 5 | 3.5" | 1" | 3 11/64" | 8 3/8" | 0.00005" | 0000000 | 000000 | 000000 | 00 |