# Needle Roller Bearing, Bearing Industry Number 66, Bearing Design B, Bore Diameter 3/8 in, Cage Material Not Applicable, Closure Open, Compatible Ring Manufacturer Part Number IRA-3, Full Complement Yes, Lubricant Material Oil, Maximum Speed 7,100 RPM, Maximum Temperature 248 Degrees F, Minimum Temperature -22 Degrees F, Needle Bearing Type Drawn Cup Needle Roller Bearing, Number of Rows One, Outside Diameter 9/16 in, Overall Width 0.375 in, Ring Material Alloy Steel, Roller Material Alloy Steel

**Manufacturer:** Koyo  
**MPN:** `B-66`

This needle bearing from Koyo features a bore diameter of 0.375 inches and an outer diameter of 0.562 inches. Manufactured by Koyo Corp., this bearing is designed for specific applications and meets the specifications of the Koyo B-66 part number.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Koyo |
| Manufacturer name | Koyo |
| Manufacturer | Koyo |
| CategoryId | 8160 |
| CategoryIdL1 | 31 |
| CategoryIdL2 | 17016 |
| CategoryIdL3 | 8160 |
| CategoryL1 | Power Transmission |
| CategoryL2 | Bearings, V-belts & Power Transmission Equipment |
| CategoryL3 | Roller Bearings |
| CategoryL4 | Needle Roller Bearings |
| DimensionUnit | inch |
| GTIN | 605790198144 |
| GraingerSku | 33KL31 |
| UPC | 605790198144 |
| UnitOfMeasure | EA |
| Weight | 0.03, 0.01, 0.05 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| height | 0.5 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 0.75 |
| moq | 1 |
| MPN | B-66 |
| multiple | 1 |
| qtyInStock | 241 |
| qtyInStockOverride | -2 |
| SKU | G8517993 |
| tierMinQty1 | 1 |
| tierPrice1 | 6.09 |
| url | https://www.zoro.com/koyo-needle-brg-machined-bore-0375-in-b-66/i/G8517993/ |
| width | 0.75 |
| Part Number | B-66 |
| Product Group | Home Improvement |
| Bore Dia (In ) | 0.375 in |
| Bore Dia (mm) | 9.525 mm |
| Outside Dia (In ) | 0.562 in |
| Outside Dia (mm) | 14.288 mm |
| Width (In ) | 0.375 in |
| Width (mm) | 9.525 mm |
| Overall Width | 0.375 in |
| Outside Diameter | 9/16 in |
| Bore Diameter | 3/8 in |
| Item | Needle Roller Bearing |
| Type | Machined, Count, ean, gtin, upc |
| Static Load Capacity (Lb ) | 1,710 lb |
| Temp Range (F) | -4 Degrees to +248 Degrees F |
| Max RPM | 7,100 RPM |
| Static Load Capacity (N) | 7.61 N |
| Dynamic Load Capacity (N) | 5.83 N |
| Dynamic Load Capacity (Lb ) | 1,310 lb |
| Number of Rows | One |
| Seal Material | Not Applicable |
| Roller Material Grade | SUJ 2 |
| Lubricant Material | Oil |
| Maximum Speed | 7,100 RPM |
| Lubrication Openings | Not Applicale |
| System of Measurement | Inch |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G8517993 | 6.09 | 1 | 241 | 1 |
| Grainger | 33KL31 | 6.2 | 1 | 57 | 1 |
| Allied Electronics | 72061525 |  |  | None | 1 |
| sustainablesupply.com | C1678360 | 7.65 | 1 | None | 1 |
| Zoro | G301800023 | 5.49 | 1 | None | 2 |
| simsupply.com | ZO-G8517993 | 13.18 | 1 | None | 1 |
| us.rs-online.com | 72061525 | 5.21 | 1 | 49 | 1 |
| apexindustrialautomation.com | B-66 |  |  | None | 1 |
| factorysupplyoutlet.com | XU51YB | 11.15 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/195500000/195805500/part_--B66---Koyo--f5b121bcff.json`  
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