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Threadless Lead Screw Nuts
Shown with Rotary Shaft (Not Included)
Install these nuts on a rotary shaft to create a linear positioning system without a lead screw. Instead of threads, a set of angled ball bearings drives the nut along a shaft as it spins. Nuts move towards you when the shaft rotates clockwise and away from you when the shaft rotates counterclockwise. To prevent overload damage, these nuts can be adjusted to slip and stop travelling at a given thrust load. Thrust loads are loads that are applied parallel to the shaft. Bearings are permanently lubricated to save maintenance time and effort.
Travel distance per turn is the distance the nut moves with one revolution of the shaft.
For technical drawings and 3-D models, click on a part number.
Inch
Overall | Mounting Hole | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Travel Distance per Turn | Max. Thrust Cap. Before Slip, lbs. | Lg. | Wd. | Ht. | Ctr. Ht. | Ctr.-to-Ctr. Lg. | Thread Size  | No. of | Construction | Temperature Range, °F | Each | |
Aluminum | |||||||||||||
| 3/8" | 0.03" | 15 | 2 1/4" | 1 1/8" | 1 21/32" | 37/64" | 3/4" | 6-32 | 2 | Two Piece | -10° to 180° | 0000000 | 0000000 |
| 3/8" | 0.1" | 30 | 2 13/16" | 1 1/2" | 1 29/32" | 49/64" | 1" | 10-32 | 2 | Two Piece | -10° to 180° | 0000000 | 000000 |
| 1/2" | 0.2" | 60 | 3 27/64" | 2" | 2 11/16" | 1 1/64" | 1 1/4" | 1/4"-20 | 2 | Two Piece | -10° to 180° | 0000000 | 000000 |
| 1/2" | 0.5" | 60 | 3 27/64" | 2" | 2 11/16" | 1 1/64" | 1 1/4" | 1/4"-20 | 2 | Two Piece | -10° to 180° | 0000000 | 000000 |
| 3/4" | 0.75" | 60 | 3 27/64" | 2" | 2 11/16" | 1 1/64" | 1 1/4" | 1/4"-20 | 2 | Two Piece | -10° to 180° | 0000000 | 000000 |
Metric
Overall | Mounting Hole | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia., mm | Travel Distance per Turn, mm | Max. Thrust Cap. Before Slip, lbs. | Lg., mm | Wd., mm | Ht., mm | Ctr. Ht., mm | Ctr.-to-Ctr. Lg., mm | Ctr.-to-Ctr. Wd., mm | Thread Size | Thread Pitch, mm | No. of | Construction | Temperature Range, °F | Each | |
Aluminum | |||||||||||||||
| 6 | 6 | 5 | 36 | 20 | 28 | 10 | 10 | __ | M3 | 0.5 | 2 | Two Piece | 0° to 230° | 0000000 | 0000000 |
| 8 | 8 | 16 | 56 | 28 | 40 | 14 | 18 | __ | M4 | 0.7 | 2 | Two Piece | 0° to 230° | 0000000 | 000000 |
| 10 | 10 | 26 | 62 | 36 | 51 | 18 | 20 | __ | M4 | 0.7 | 2 | Two Piece | 0° to 230° | 0000000 | 000000 |
| 12 | 12 | 33 | 72 | 40 | 54 | 20 | 25 | __ | M5 | 0.8 | 2 | Two Piece | 0° to 230° | 0000000 | 000000 |
| 20 | 20 | 59 | 97 | 60 | 71 | 30 | 50 | 40 | M6 | 1 | 4 | Two Piece | 0° to 230° | 0000000 | 000000 |