About Electric Motors
When replacing a motor, use the information on your motor’s nameplate to guide your selection.
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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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8" | 0.0007" | -0.004" to 0" | 0.95" | 4.089" | 7/16"-20 | Steel | 0000000 | 000000 |
5C Collets
These collets tightly grip workpieces when installed into a 5C collet chuck or holder. They provide a stronger hold on small workpieces than a standard lathe chuck.
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 | External Thread Size | Material | Each | |
Round | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 0.0008" | -0.004" to 0" | 1 1/4" | 3.27" | 1.041"-24 | 1.238"-20 | Steel | 00000000 | 000000 |
Hexagonal | |||||||||
| 1/8" | 0.0025" | -0.004" to 0" | 1 1/4" | 3.27" | 1.041"-24 | 1.238"-20 | Steel | 00000000 | 00000 |
Square | |||||||||
| 1/8" | 0.0025" | -0.004" to 0" | 1 1/4" | 3.27" | 1.041"-24 | 1.238"-20 | Steel | 00000000 | 00000 |
ER-32 Collets
Install into an ER-32 collet chuck or holder to tightly grip round-shank tool bits in milling machines.
For technical drawings and 3-D models, click on a part number.
| Collet Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Specifications Met | Each | |
Round | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 0.109"-0.125" | -0.0001" to 0.0001" | 1.3" | 1/32" | 1.57" | Hardened Steel | DIN 6499, ISO 15488B | 0000000 | 000000 |
ER-16 Collets
Install into an ER-16 collet chuck or holder to tightly grip round-shank tool bits in milling machines.
For technical drawings and 3-D models, click on a part number.
| Collet Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Each | |
Round | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8" | 0.109"-0.125" | -0.0001" to 0.0001" | 0.677" | 1/32" | 1.06" | Hardened Steel | 00000000 | 000000 |
ER-20 Collets
Install into an ER-20 collet chuck or holder to tightly grip round-shank tool bits in milling machines. To ensure they work with milling machines and tooling made throughout the world, these collets meet both ISO and DIN dimensional standards.
For technical drawings and 3-D models, click on a part number.
| Collet Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Specifications Met | Each | |
Round | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 0.109"-0.125" | -0.0001" to 0.0001" | 0.83" | 1/32" | 1.22" | Hardened Steel | DIN 6499, ISO 15488B | 0000000 | 000000 |
ER-25 Collets
Use these collets in milling machines that have an ER-25 collet chuck. With a round face and adjustable body, they compress to grip round-shank drill bits, end mills, reamers, and taps.
To ensure they work with milling machines and tooling made throughout the world, these collets meet both ISO and DIN dimensional standards.
| Collet Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Specifications Met | Each | |
Round | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 0.109"-0.125" | -0.0001" to 0.0001" | 1.03" | 1/32" | 1.38" | Hardened Steel | DIN 6499, ISO 15488B | 0000000 | 000000 |
ER-11 Collets
Install into an ER-11 collet chuck or holder to tightly grip round-shank tool bits in milling machines.
For technical drawings and 3-D models, click on a part number.
| Collet Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Each | |
Round | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8" | 0.109"-0.125" | -0.0001" to 0.0001" | 0.46" | 1/64" | 0.71" | Steel | 0000000 | 000000 |
| 3/16" | 0.172"-0.187" | -0.0001" to 0.0001" | 0.46" | 1/64" | 0.71" | Steel | 0000000 | 00000 |
| 1/4" | 0.234"-0.250" | -0.0001" to 0.0001" | 0.46" | 1/64" | 0.71" | Steel | 0000000 | 00000 |
100-TG Collets
Install into a 100-TG collet chuck or holder to tightly grip round-shank tool bits in milling machines.
For technical drawings and 3-D models, click on a part number.
| Collet Size | Workpiece Dia. Tolerance | Max. Body Dia. | Approximate Dia. Compression | Overall Lg. | Material | Each | |
Round | |||||||
|---|---|---|---|---|---|---|---|
| 1/8" | -0.0003" to 0.0003" | 1.278" | 1/64" | 2.386" | Hardened Steel | 00000000 | 000000 |
Collets for Dremel Bit and Bur Grinders
Pair with Dremel rotary tools to securely grip bits and burs.
| Collet Size | Manufacturer | Manufacturer Model Number | For Manufacturer Model Number | Each | |
For Dremel Grinder | |||||
|---|---|---|---|---|---|
| 1/8" | Bosch | 480 | 100-N/7, 285, 3000-1/24, 3965-02, 4000-2/30, 7760-N/10, 7800-02, 8000, 8050-N/18, 8100-N/21, 8200, 8220-1/28 | 00000000 | 00000 |
Collets for Electric Bit and Bur Grinders
Spindle Motors
Designed to run at high speeds with very little vibration, these motors often drive smooth, steady cuts in CNC machines. They’re brushless, so they run faster, last longer, and are more efficient than brushed DC motors. They also have a higher torque-to-weight ratio. You’ll need a brushless DC motor driver (not included) to power and control these spindle motors. They’re not compatible with automatic tool changers.
They come with an ER-11 collet for holding round-shank tools, such as router bits, drill bits, and end mills. Collets for larger shank sizes are sold separately.
Total Indicated Runout (TIR) 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. When choosing a replacement spindle motor, you want one that has an equal or better TIR.
For technical drawings and 3-D models, click on a part number.
Torque, in.lbs. | Insulation | O'all | Shaft | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Speed, rpm | Voltage | Full Load Current, A | Wattage, kW | Frame Size | Max. | Continuous | Class | Max. Temp., °F | Lg. | Wd. | Ht. | Dia., mm | Lg., mm | TIR (Total Indicated Runout) Accuracy | Type | Sizes Included | Each | |
| 14,400 | 48V DC | 24.9 | 0.211 | NEMA 24 | 0.31 | 0.1 | F | 311° | 6.1" | 2.4" | 2.8" | 30 | 52 | 0.0005" | ER-11 | 1/8" | 0000000 | 0000000 |
| Collet Size | Grip Range | Workpiece Dia. Tolerance | Max. Body Dia. | Approx. Dia. Compression | Overall Lg. | Material | Each | |
| 1/8" | 0.109"-0.125" | -0.0001" to 0.0001" | 0.46" | 1/64" | 0.71" | Steel | 0000000 | 000000 |
| 3/16" | 0.172"-0.187" | -0.0001" to 0.0001" | 0.46" | 1/64" | 0.71" | Steel | 0000000 | 00000 |
| 1/4" | 0.234"-0.250" | -0.0001" to 0.0001" | 0.46" | 1/64" | 0.71" | Steel | 0000000 | 00000 |