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Bearing Type Bearing Type |
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Maximum Speed Maximum Speed |
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Ring Material Ring Material |
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Ball Material Ball Material |
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For Load Direction For Load Direction |
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Cage Material Cage Material |
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Shaft Mount Type Shaft Mount Type |
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Lubricant Lubricant |
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Shield Material Shield Material |
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Dynamic Radial Load Capacity Dynamic RadialLoad Capacity | Show |
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Dynamic Radial Load Capacity Dynamic RadialLoad Capacity | Hide |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Ball and Roller Bearings
More
Precision Stainless Steel Ball Bearings


Made to tight tolerances, these 440C stainless steel bearings combine speed and accuracy with corrosion resistance.
Open bearings dissipate heat more efficiently than shielded bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
__ | 8mm | 12mm | 2.5mm | 440C Stainless Steel | 85 | 32 | 40,000 | Lubricated | -30° to 280° | ABEC-7 | 0000000 | 000000 |
Shielded | ||||||||||||
R188-2Z | 1/4" | 1/2" | 3/16" | 440C Stainless Steel | 85 | 40 | 13,000 | Lubricated | -10° to 240° | ABEC-7 | 0000000 | 00000 |
High-Load Plastic Ball Bearings

With two rows of balls, these lightweight bearings have greater durability and load capacity—and a wider profile—than single-row plastic bearings. They’re commonly used in bottle-filling machines and other food-processing applications. The acetal body doesn’t absorb water, so it can operate in liquids or be washed down without losing strength. The balls are made of either glass or 316 stainless steel—both materials are corrosion resistant. Since there’s no metal-on-metal contact between the balls and the body, these bearings don’t require lubrication.
For technical drawings and 3-D models, click on a part number.
Radial Load Capacity, lbs. | ||||||||||||
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Bearing Trade Number | For Shaft Diameter | For Housing ID | Width | Ring Material | Dynamic | Static | Maximum Speed, rpm | Lubrication | Temperature Range, °F | ABEC Rating | Each | |
316 Stainless Steel Balls | ||||||||||||
Open | ||||||||||||
R10B | 5/8" | 1 3/8" | 7/16" | Acetal Plastic | 85 | 65 | 800 | Not Required | -40° to 180° | Not Rated | 00000000 | 000000 |
A5202-6 | 15mm | 35mm | 16mm | Acetal Plastic | 85 | 65 | 800 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
A5203-6 | 17mm | 40mm | 17mm | Acetal Plastic | 85 | 65 | 800 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
Glass Balls | ||||||||||||
Open | ||||||||||||
R10B | 1/2" | 1 3/8" | 7/16" | Acetal Plastic | 85 | 65 | 800 | Not Required | -40° to 180° | Not Rated | 00000000 | 00000 |
Precision Flanged Ball Bearings


When speed and accuracy matter most, opt for these bearings. They’re made to tighter tolerances than standard flanged ball bearings. All are 440C stainless steel for good corrosion resistance. The flange ensures proper positioning inside a tube or housing.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
For technical drawings and 3-D models, click on a part number.
Flange | Radial Load Cap., lbs. | |||||||||||||
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Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | ||||||||||||||
R188-2Z | 1/4" | 1/2" | 3/16" | 0.547" | 0.05" | 440C Stainless Steel | 85 | 40 | 13,000 | Lubricated | -60° to 250° | ABEC-7 | 0000000 | 000000 |