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Deep Groove Ball Bearing Imperial Sizes
Imperial inch size ball bearings are some of the most common deep groove ball bearings used today. Standard inch round bore sizes range from 0.0937" up to 1.375". We supply imperial ball bearings in a slew of configurations; open, sealed on both sides (-2RS), sealed on one side (-RS), shielded on both sides (-ZZ), shielded on one side (-Z), and snap ring (NR). Supplying one of the largest selections of premium ball-bearings USA Roller Chain & Sprockets sets it's self apart from others by being a tier 1 industry-leading ball bearing supplier with an A+ BBB rating. We also stock a range of additional power transmission and industrial components, for more information or to place an order please contact us and we will be happy to assist you.
 Open (No Seal or Sheild) |
 RS (Seal on One Side) |
 2-RS (Seal on Both Sid) |
 Z (Shield on One Sides) |
 ZZ (Shields on Both Sides) |
 NR (Retaining Ring) |
|---|---|---|---|---|---|
R-Series Inch Ball Bearings
| Bearing Size | Bore (d) | Diameter (D) | Width Open (B) | Width Sealed (B) | Dynamic Load Rating (LBS) | Static Load Rating (LBS) | Grease Limiting Speed 2RS (RPM) | Grease Limiting Speed ZZ/ Open (RPM) | Oil Limiting Speed Open (RPM) |
|---|---|---|---|---|---|---|---|---|---|
| R2 |
1/8" |
3/8" | 0.1562" | 0.1562" | 140LBS | 49LBS | 26400 | 49000 | 58000 |
| R2A | 1/8" | 1/2" | 0.1719" | 0.1719" | 255LBS | 90LBS | 29200 | 42000 | 51000 |
| R3 | 3/16" | 1/2" | 0.1562" | 0.196" | 292LBS | 109LBS | 24600 | 41000 | 48000 |
| R3A | 3/16" | 5/8" | 0.196" | 0.196" | 292LBS | 109LBS | 24600 | 41000 | 48000 |
| R4 | 1/4" | 5/8" | 0.196" | 0.196" | 360LBS | 150LBS | 21600 | 36000 | 43000 |
| R4A | 1/4" | 3/4" | 0.2188" | 0.2812" | 590LBS | 239LBS | 20400 | 34000 | 40000 |
| R6 | 3/8" | 7/8" | 0.2188" | 0.2812" | 750LBS | 315LBS | 18600 | 31000 | 37000 |
| R8 | 1/2" | 1-1/8" | 0.25" | 0.3125" | 1,150LBS | 540LBS | 15600 | 26000 | 30000 |
| R10 | 5/8" | 1-3/8" | 0.2812" | 0.343" | 1,340LBS | 7288LBS | 12000 | 20000 | 23000 |
| R12 | 3/4" | 1-5/8" | 0.3125" | 0.4375" | 2,110LBS | 1,120LBS | 10800 | 18000 | 21000 |
| R14 | 7/8" | 1-7/8" | 0.375" | 0.5" | 2,270LBS | 1,310LBS | 9000 | 15000 | 18000 |
| R16 | 1" | 2" | 0.375" | 0.5" | 2,270LBS | 1,310LBS | 8400 | 14000 | 16000 |
| R18 | 1-1/8" | 2-1/8" | 0.375" | 0.5" | 2,980LBS | 1,860LBS | 7800 | 13000 | 15000 |
| R20 | 1-1/4" | 2-1/4" | 0.375" | 0.5" | 2,980LBS | 1,860LBS | 7500 | 12000 | 14000 |
| R22 | 1-3/8" | 2-1/2" | 0.4375" | 0.5625" | 3,590LBS | 2,320LBS | 7200 | 11000 | 12500 |
| R24 | 1-1/2" | 2-5/8" | 0.4375" | 0.5625" | 3,770LBS | 2,590LBS | 6900 | 10000 | 11500 |
RLS-Series Inch Ball Bearings
| Bearing Size | Bore (d) | Diameter (D) | Width (B) | Dynamic Load Rating (LBS) | Static Load Rating (LBS) | Limiting Speed (RPM) |
|---|---|---|---|---|---|---|
| RLS4 | 1/2" | 1-5/16" | 3/8" | 703LBS | 316LBS | 32,000 |
| RLS5 | 5/8" | 1-9/16" | 7/16" | 976LBS | 459LBS | 24,000 |
| RLS6 | 3/4" | 1-7/8" | 9/16" | 1,296LBS | 633LBS | 20,000 |
| RLS7 | 7/8" | 2" | 9/16" | 1,541LBS | 765LBS | 19,000 |
| RLS8 | 1" | 2-1/4" | 5/8" | 1,816LBS | 898LBS | 17,000 |
| RLS9 | 1-1/8" | 2-1/2" | 5/8" | 1,990LBS | 1,020LBS | 15,000 |
| RLS10 | 1-1/4" | 2-3/4" | 11/16" | 2,296LBS | 1,204LBS | 14,000 |
| RLS11 | 1-3/8" | 3" | 11/16" | 2,602LBS | 1,398LBS | 13,000 |
| RLS12 | 1-1/2" | 3-1/4" | 3/4" | 3,133LBS | 1,694LBS | 11,000 |
| RLS13 | 1-5/8" | 3-1/2" | 3/4" | 3,388LBS | 1,898LBS | 11,000 |
| RLS14 | 1-3/4" | 3-3/4" | 13/16" | 3,582LBS | 2,000LBS | 10,000 |
| RLS16 | 2" | 4" | 13/16" | 4,449LBS | 2,551LBS | 10,000 |
| RLS18 | 2-1/4" | 4-1/2" | 7/8" | 4,847LBS | 2,857LBS | 8,000 |
| RLS20 | 2-1/2" | 5" | 15/16" | 6,306LBS | 3,827LBS | 7,000 |
| RLS22 | 2-3/4" | 5-1/4" | 15/16" | 6,765LBS | 4,133LBS | 6,400 |
| RLS24 | 3" | 5-3/4" | 1-1/16" | 7,163LBS | 4,592LBS | 6,000 |
| RLS26 | 3-1/4" | 6" | 1-1/16" | 8,490LBS | 5,408LBS | 5,800 |
| RLS28 | 3-1/2" | 6-1/2" | 1-1/8" | 9,755LBS | 6,327LBS | 5,300 |
| RLS30 | 3-3/4" | 6-3/4" | 1-1/8" | 11,020LBS | 7,092LBS | 5,000 |
| RLS32 | 4" | 7-1/4" | 1-1/4" | 12,653LBS | 8,163LBS | 4,700 |
| RLS34 | 4-1/4" | 7-1/2" | 1-1/4" | 12,653LBS | 8,316LBS | 4,500 |
| RLS36 | 4-1/2" | 8" | 1-5/16" | 13,265LBS | 8,827LBS | 4,300 |
| RLS38 | 4-3/4" | 8-1/4" | 1-5/16" | 14,082LBS | 9,694LBS | 4,100 |
| RLS40 | 5" | 9" | 1-3/8" | 15,102LBS | 11,020LBS | 3,800 |
| RLS44 | 5-1/2" | 9-1/2" | 1-3/88" | 15,918LBS | 11,837LBS | 3,600 |
| RLS48 | 6" | 10-1/2" | 1-9/16" | 17,755LBS | 13,980LBS | 3,200 |
| RLS52 | 6-1/2" | 11" | 1-9/16" | 18,980LBS | 15,306LBS | 3,000 |
RMS-Series Inch Ball Bearings
| Bearing Size | Bore (d) | Diameter (D) | Width (B) | Dynamic Load Rating (LBS) | Static Load Rating (LBS) | Limiting Speed (RPM) |
|---|---|---|---|---|---|---|
| RMS4 | 1/2" | 1-5/8" | 5/8" | 1,163LBS | 510LBS | 23,000 |
| RMS5 | 5/8" | 1-13/16" | 5/8" | 1,378LBS | 668LBS | 22,000 |
| RMS6 | 3/4" | 2" | 11/16" | 1,622LBS | 796LBS | 19,000 |
| RMS7 | 7/8" | 2-1/4" | 11/16" | 1,898LBS | 934LBS | 18,000 |
| RMS8 | 1" | 2-1/2" | 3/4" | 2,296LBS | 1,163LBS | 16,000 |
| RMS9 | 1-1/8" | 2-13/16" | 13/16" | 2,867LBS | 1,490LBS | 13,000 |
| RMS10 | 1-1/4" | 3-1/8" | 7/8" | 3,388LBS | 1,837LBS | 12,000 |
| RMS11 | 1-3/8" | 3-1/2" | 7/8" | 4,184LBS | 2,286LBS | 11,000 |
| RMS12 | 1-1/2" | 3-3/4" | 15/16" | 4,184LBS | 2,286LBS | 11,000 |
| RMS13 | 1-5/8" | 4" | 15/16" | 5,378LBS | 3,061LBS | 9,500 |
| RMS14 | 1-3/4" | 4-1/4" | 1-1/16" | 6,306LBS | 3,673LBS | 8,500 |
| RMS15 | 1-7/8" | 4-1/2" | 1-1/16" | 6,306LBS | 3,622LBS | 6,800 |
| RMS16 | 2" | 4-1/2" | 1-1/16" | 6,306LBS | 3,673LBS | 6,700 |
| RMS18 | 2-1/4" | 5" | 1-1/4" | 8,357LBS | 4,898LBS | 7,000 |
| RMS20 | 2-1/2" | 5-1/2" | 1-1/4" | 9,418LBS | 5,714LBS | 6,700 |
| RMS22 | 2-3/4" | 6-1/4" | 1-3/8" | 10,612LBS | 6,429LBS | 6,300 |
| RMS24 | 3" | 7" | 1-9/16" | 12,653LBS | 8,163LBS | 5,300 |
| RMS26 | 3-1/4" | 7-1/2" | 1-9/16" | 14,592LBS | 10,000LBS | 5,000 |
| RMS27 | 3-3/8" | 7-1/2" | 1-9/16" | 14,592LBS | 10,000LBS | 5,000 |
| RMS28 | 3-1/2" | 8-1/8" | 1-3/4" | 14,592LBS | 11,224LBS | 4,500 |
| RMS30 | 3-3/4" | 8-1/4" | 1-3/4" | 15,612LBS | 11,020LBS | 4,400 |
| RMS32 | 4" | 1-3/4" | 1-3/4" | 17,755LBS | 13,469LBS | 4,300 |
| RMS34 | 4-1/4" | 1-3/4" | 1-3/4" | 17,755LBS | 13,469LBS | 4,000 |
| RMS36 | 4-1/2" | 2" | 2" | 20,714LBS | 16,936LBS | 3,800 |
Frequently Asked Questions
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If your order is less than $300, no problem! Please give us a call at 407-347-3519 or email Sales@usarollerchain.com, and we will be happy to assist you!
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USA Roller Chain utilizes an extensive network of vendors and warehouses to ensure you get your items quickly! Our primary roller chain warehouse is located in Clermont, FL, but we have warehouses located all across the United States. Your order will be shipped from the closest warehouse to you that has your requested product in stock. This speeds up transit times and saves you money on shipping! If you have any questions about where an item will ship from, please CONTACT US
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In-stock items are typically shipped out in 1-3 business days.Made-to-order item lead times vary from 1-2 days up to 14-20+ weeks, depending on the product. If you need your items urgently, please let us know, and we will do our best to meet your required delivery date! If you have any questions, please CONTACT US
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If you are having an issue with your order, please CONTACT US as soon as possible so we can resolve it for you.
Most in-stock items can be returned within 30 days of the shipment date. MTO or Custom orders are not eligible for a return or refund. For a detailed explanation of our return policies, please click here.
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Absolutely! We may be called "USA Roller Chain", but we ship worldwide! Please CONTACT US for Export/International quotes or orders.