Selecting Compatible Lead Screws and Nuts
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About Plain Bearings
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Oil-Embedded Flanged Sleeve Bearings
Startup friction causes these bearings to release a thin layer of oil on the bearing’s surface. They’re flanged, so they handle loads both parallel and perpendicular to the shaft. They’re also known as Oilite® bearings.
Note: Dynamic load capacity is the maximum load a bearing can withstand at a given shaft speed. If your application’s load and speed requirements are below the values listed, the bearing will work.
For technical drawings and 3-D models, click on a part number.
| For Housing ID | Lg. | Flange OD | Flange Thick. | Dynamic Radial Load Capacity | Dynamic Thrust Load Capacity | Lubrication | Lubricant | Temperature Range, °F | Each | |
841 Bronze Bearings | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
For 5/8" Shaft Dia. | ||||||||||
| 11/16" | 15/16" | 15/16" | 1/32" | 1,100 lbs. @ 60 rpm | 760 lbs. @ 60 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 000000 |
For 7/8" Shaft Dia. | ||||||||||
| 15/16" | 15/16" | 1 5/16" | 1/32" | 1,550 lbs. @ 60 rpm | 1,500 lbs. @ 60 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 00000 |
Metric Fast-Travel Ultra-Precision Lead Screws and Nuts
Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size, thread pitch, and number of thread starts.
Acetal nuts have good wear and corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
| Thread Size  | Thread Pitch, mm | Lg. | Dia. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn, mm | Hardness | Tensile Strength, psi | Dynamic Thrust Load Cap. | Each | ||
Acetal Plastic | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | M12 | 2.5 | 15/16" | 1.024" | 2 | Metric Rounded Trapezoidal | 2:1 | 5 | Durometer 74D | 10,000 | Not Rated | 0000000 | 000000 |
Wheel Bearings
Replace worn or damaged wheel bearings to keep your equipment rolling. Use flanged bearings and ball bearings in pairs. Change the axle diameter with wheel reducer bushings (sold separately).
Note: Not for use in towing applications.
For impact-resistant tapered roller bearings, as well as other bearing materials and sizes, please see Ball and Roller Bearings and Sleeve Bearings. Ball bearings require minimal effort to start rolling and are best for low speeds.
Retaining washers hold roller bearings in place.
For technical drawings and 3-D models, click on a part number.
| For Axle Dia. | OD | Lg. | Each | |
Ball Bearings | ||||
|---|---|---|---|---|
| 1/2" | 1 3/16" | 15/16" | 0000000 | 000000 |