R8 Solid Oil Ball Bearing (1/2x1-1/8x5/16 in)
R8 Solid Oil Ball Bearing (1/2x1-1/8x5/16 in)
The R8 solid oil bearing is a single row deep groove ball bearing sealed with Syn-Tech solid oil. The internal space is filled with a solid polymer lubricant that holds the oil in place and releases a thin film to the balls and raceways as the bearing turns. It needs no relubrication for its service life, cannot purge, and cannot be washed out by water, steam or cleaning chemicals. We fill each bearing to order at our facility in Glendale, California.
Part numbers: R8-SL (Standard, chrome steel) and SR8-FGSL (Food Grade, stainless steel with NSF H1 solid lubricant).
Specifications
| Bore | 1/2 in (12.7 mm) |
|---|---|
| Outside diameter (OD) | 1-1/8 in (28.57 mm) |
| Width | 5/16 in (7.94 mm) |
| Series | R series, inch |
| Material | Standard: chrome steel rings and balls. Food Grade: stainless steel rings and balls. |
| Lubricant | Syn-Tech solid oil. Food Grade: NSF H1 registered solid lubricant. |
| Sealing | Sealed with solid oil. There is no separate seal or shield and no closure option to choose. |
| Origin | Base bearing made in China to standard dimensions; filled with solid oil to order at our Glendale, California facility. |
| Replaces | R8-2RS, R8ZZ and open R8 bearings of the same dimensions where relubrication is impractical. Same dimensions as a R8 W64 solid oil bearing; the Food Grade version matches a R8 W64F. |
Where it fits
- Food and beverage lines, washdown equipment and packaging machinery, where grease purge and washout are a problem
- Conveyors, fans, pumps and hard-to-reach motors, where relubrication is impractical
- Marine and wet environments, where the lubricant must stay put (choose Food Grade for stainless steel)
- Solid oil bearings run at lower maximum speeds than greased bearings, so email us before using one in a high-speed application
Common questions
Is the R8 solid oil bearing sealed? Yes. The solid oil fill seals it. There is no separate seal or shield to specify.
Does it ever need grease? No. The lubricant is built in for the life of the bearing.
What does it replace? A standard R8, R8-2RS or R8ZZ bearing with the same 1/2x1-1/8x5/16 in dimensions, wherever relubrication is impractical or washdown is a problem. It is also the same size as a R8 W64 or R8 W64F solid oil bearing.
Made to order. Ships in 7 to 10 business days. Standard shipping is $10, free on orders over $100. Because every bearing is filled to order, all sales are final; wrong or defective items are replaced free.
Questions about this size, quantity pricing or your application? Email info@solidoilbearings.com. See also our FAQ and the guide Solid Oil vs. Greased Bearings.