Yokomo YOKBB850P Super Precision Bearing 5x8x2.5mm  [YOKBB850P]

Yokomo BB-850P - 5x8x2.5mm Super Precision Bearing
Price:
CAD$21.92
Brand:
Yokomo
Model:
YOKBB850P
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Compact 5x8x2.5mm ball bearing for hobby R/C

This Yokomo YOKBB850P 5x8x2.5mm Super Precision Bearing is a compact metal ball bearing intended for RC-scale rotating components. Its dimension set (5x8x2.5mm) matches common small shaft and hub fits used in electric touring, pan car, and micro-scale models where a low-profile precision bearing is required.

In practice this bearing serves as a drop-in option for shafts, idlers, and small gearbox outputs where consistent rolling performance reduces friction and heat. The neutral construction and tight tolerance help maintain predictable response under tuning changes to gearing and motor load.

Installation notes: press or gently tap the bearing into a matching bore using a sleeve that contacts the outer race only, avoid applying force to the inner race, and check axial play after seating. Regular light maintenance with appropriate bearing oil helps preserve smooth rotation in dustier outdoor use.

Specifications

  • Item: 5x8x2.5mm Super Precision Bearing
  • Material: Metal
  • Model Number: YOKBB850P
  • Compatibility: General R/C rotating shafts and small drivetrain assemblies
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

What shaft diameter is compatible with this bearing?

The inner diameter is 5mm, so it fits 5mm shafts or 5mm adapter sleeves. Ensure the mating shaft is straight and correctly supported to avoid premature wear.

Is this bearing sealed against dirt?

The product is described as a super precision metal bearing; check the physical part for shields or seals. If you run in dirty conditions, plan on additional protection or more frequent servicing.

What lubricant should I use for high RPM applications?

Use a light bearing oil or low-viscosity synthetic lubricant to keep drag minimal at high RPM. Heavy grease will increase drag and is not recommended for motor or high-speed wheel positions.

Can this be installed in small motor endbells or hubs?

Yes. The 5x8x2.5mm size is commonly used in compact motor supports and wheel hub locations, provided the housing bore and shaft match the bearing dimensions.

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