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Gears, Differentials, Racks & Pinions
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- Designing with Plastic Gears
- Helical Gears Technical Information
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- > Synchronous Drive Belts, Pulleys, & Cables
- > Couplings, Flexible Shafts, & Universal Joints
- > Chains & Sprockets
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Shafts & Shaft Accessories
- Shafts & Drill Rods
- Sleeves, Hexagonal Hole
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- Sleeves, Partially Threaded, Square Hole
- Bushings, Square Hole, with Slit
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- Shaftloc® - Sleeves, Pulleys & Accessories
- Bushings, Locking Hub
- Collars, Shaft
- Reducers & Extenders, Shaft
- Supports, Shaft
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- Ball Splines, Telescoping
- Shaft Lock, Nut Type Potentiometers
- Shaft Bushings, Taper
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Bearings & Linear Motion Components
- Ball Bearings
- Linear Bearings
- Press-Fit Bearings
- Needle Roller Bearings
- Sintered Bronze Bars
- Sleeve Bearings
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- Thrust Bearings & Washers
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- Ball Bearing Technical Information
- Ball Bearing Lubrication and Surface Finishes
- Plastic and Non-Metallic Bearings
- Porous Metallic Bearings
- > Motors, Gearheads, & Motion Control
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- > Hardware
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Needle Roller Bearings
Needle roller bearings are comprised of long cylinders, known as needles, which have small diameters in comparison to the needle length (about 4:1) and are held in a retainer. Additionally, because they are thinner, less space is needed between the shaft and neighboring elements.
Needle bearings prevent friction between moving parts in applications with high speeds and high radial loads and therefore typically require a lubricant (click here to view available lubricants). The bearing is contained within an outer ring that is drawn from low-carbon steel. The hardness, precision, and polish of the shaft must match those of the bearing races perfectly for the needle rollers to function properly.
Needle roller bearings are commonly found in the transportation, aerospace, and industrial markets.