About Plastic
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About Ball and Roller Bearings
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About Plain Bearings
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One-Piece Thrust Ball Bearings
In addition to handling higher loads than three-piece ball bearings, one-piece bearings are easier to handle. They have an outer band that holds the bearing together and acts as a shield against dust and other contaminants.
Thrust Load Cap., lbs. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | OD | Thick. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Features | Each | |
Shielded | |||||||||||
| 3 1/4" | 4 31/32" | 1" | Steel | 18,800 | 56,000 | 1,500 | Required | -40° to 245° | Lubrication Hole | 00000000 | 0000000 |
Oil-Embedded Thrust Bearings
Startup friction causes these porous bronze bearings to release a thin layer of oil on the bearing’s surface. They are 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.
| OD | Thick. | Dynamic Thrust Load Capacity | Lubrication | Lubricant | Temperature Range, °F | Each | |
For 3 1/4" Shaft Dia. | |||||||
|---|---|---|---|---|---|---|---|
| 4 1/2" | 1/8" | 10,500 lbs. @ 30 rpm | Lubricated | SAE 30 Oil | -35° to 300° | 00000000 | 000000 |
Tapered-Roller Bearings
Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | For Housing ID | Wd. | Bearing Trade Number  | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Each | |
Steel Ring | ||||||||||||
Open | ||||||||||||
| 3 1/4" | 5 1/4" | 1.031" | 47686/47620 | 9,750 | 58,750 | 6,750 | 69,250 | 1,400 | Required | -60° to 200° | 0000000 | 0000000 |
Needle-Roller Thrust Bearings
Thinner rollers allow these bearings to fit in tighter spaces than tapered-roller thrust bearings. Because of the large contact area between the rollers and washers (not included), these bearings are great for medium to heavy duty, low-friction jobs. For use on hardened and ground surfaces.
Washers allow you to use the bearing on unhardened and unground surfaces.
Thrust Load Cap., lbs. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microns | Temp. Range, °F | Each | |
Steel Rollers | ||||||||||
Open | ||||||||||
| 3 1/4" | 4 1/8" | 1/8" | 11,600 | 66,200 | 4,000 | Required | 0.2 | 0° to 240° | 00000000 | 000000 |
Slippery UHMW Polyethylene Tubes
These impact- and wear-resistant tubes offer 360° protection from scrapes and strikes to wires, cords, and anything that can slide through them. UHMW has a low-friction surface that resists sticking and binding.
Tight-tolerance tubes, also known as bushing stock, slide over rods and inside shafts to increase or decrease the diameter. Their precise sizing allows ascending sizes to fit inside each other to create a thicker wall.
- Color: White
- Temperature Range: -20° to 180° F
- Tensile Strength: 4,350-5,800 psi (Poor)
- Impact Strength: 16.8 ft.-lbs./in. (Excellent)
- Hardness: Durometer 65D-67D (Medium)
- For Use Outdoors: No
- Specifications Met: ASTM D4020
6" Lg. | |||||
|---|---|---|---|---|---|
| OD | OD Tolerance | ID | ID Tolerance | Each | |
1/4" Wall Thick. (-0.06" to 0") | |||||
| 3 3/4" | -0.030" to 0.000" | 3 1/4" | 0.000" to 0.030" | 0000000 | 000000 |
Clear Scratch- and UV-Resistant Acrylic Tubes
- Color: Clear
- Temperature Range: -40° to 180° F
- Tensile Strength; 9,195-11,030 (Good)
- Impact Strength: 0.040 ft.-lbs./in.
- Hardness: Rockwell M89-M96 (Hard)
- For Use Outdoors: Yes
- Specifications Met: UL 94 HB
When compared to cast acrylic tubes, these extruded acrylic tubes offer nearly the same performance at a fraction of the cost. Use them for sight gauges and protective covers. This scratch- and UV-resistant material stands up to outdoor use better than polycarbonate and maintains clarity over time.
| OD | OD Tolerance | ID | ID Tolerance | Lg., ft. | Each | |
1/8" Wall Thick. | ||||||
|---|---|---|---|---|---|---|
| 3 1/2" | -0.025" to 0.025" | 3 1/4" | -0.025" to 0.025" | 6 | 0000000 | 000000 |
Bearing Caps
Cover standard or flange-mount bearings to protect personnel from injury and keep contaminants out. Place caps over the entire bearing housing and drill holes in their flange to install with screws. If necessary, drill the caps for access to bearing grease fittings or to create space for a shaft to pass through, and trim the flange to fit in tight spaces.
Black ABS caps resist UV light, so they won’t color or crack when exposed to the sun.
Inside | |||||||
|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | ID | Max. Temp., °F | Color | Each | |
Rigid ABS Plastic | |||||||
For Bearing with Two-Bolt Flange Mount | |||||||
| 5 13/16" | 3 3/8" | 2 7/16" | 3 1/4" | 200° | Black | 0000000 | 000000 |