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Product Specifications:
| Item | Needle Roller Bearing |
| Application | Automobile Field, Drive-Lines, Engine, Industrial Machinery Field, Steering Systems, Transmission, Wind Power Generation |
| Bearing Design | B |
| Bearing Industry Number | 56 |
| Bore Dia. | 0.312" |
| Bore Diameter | 5/16" |
| Closure | Open |
| Full Complement | Yes |
| Lubricant Material | Oil |
| Lubrication Openings | Not Applicable |
| Max. Speed | 8300 RPM |
| Max. Temp. | 248°F |
| Min. Temp. | -22°F |
| Needle Bearing Type | Drawn Cup Needle Roller Bearing |
| Number Of Rows | 1 |
| Outside Dia. | 1/2" |
| Overall Width | 3/8" |
| Ring Material | Alloy Steel |
| Ring Material Grade | SUJ 2 |
| Roller Material | Alloy Steel |
| Roller Material Grade | SUJ 2 |
| Width | 3/8" |
Shipping Info:
| Ship height (cm) | 0.97 |
| Ship length (cm) | 1.27 |
| Ship width (cm) | 1.27 |
| Country of Origin | JP |
Product Variants
| Model | Bore Dia. | Outside Dia. | Closure | Cage Material | Ring Material Grade | Overall Width | Lubrication Openings | Roller Material Grade | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| IR-242816 | 1 1/2" | 1 3/4" | - | - | - | 1" | - | - | €62.90 | |
| IR-2020 | 1 1/4" | 1 1/2" | - | - | - | 1.265" | - | - | €81.11 | |
| IR-1816 | 1 1/8" | 1 3/8" | - | - | Grade SU2 | 1.015" | - | - | €141.41 | |
| IR-1916 | 1.188" | 1 1/2" | - | - | Grade SU2 | - | - | - | €80.19 | |
| IR-283624 | 1 3/4" | 2 1/4" | - | - | - | 1 1/2" | - | - | €77.28 | |
| IR-162016 | 1" | 1 1/4" | - | - | Grade SU2 | 1" | - | - | €46.76 | |
| IR-1616 | 1" | 1 1/4" | - | - | Grade SU2 | 1.015" | - | - | €62.24 |
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Contact us
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KOYO B-56 Needle Roller Bearing, B, 56, 5/16 Inch Bore, 1/2 Inch Od, Full Complement, Open
€15.29 /unit


