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Koyo B-8812-D is a full complement drawn cup needle roller bearing of the B-series, open type. It features a maximum complement of needle rollers for high load capacity in a compact radial cross-section. Suitable for oscillating and slow-rotating applications where space is limited.
MODEL B-8812-D;PBL125
OBSOLETE
Please call 888-671-2883 for Replacement info
Typically Ships in: 1 day
Returnable: See conditions
Bore Diameter
5-1/2 in
Closure Type
Open
Dynamic Load Capacity
17300 lbf
Maximum RPM
1600 rpm
O.D.
6 in
Series
B Inch Series
Static Load Capacity
52000 lbf
Type
Open Ends Uncaged
Width
3/4 in
Drawn cup needle roller bearings support radial loads and reduce friction between rotating components, with a drawn outer shell serving as a raceway for the rollers. The small cross section of the drawn cup bearing provides high load-carrying capability with minimum required space. Drawn cup bearings are easily installed with a press fit in the housing.
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- Full complement bearings handle high radial load-carrying capability
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
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