Yokomo BB-1140P Pure Evolution SPEC Racing Motor Bearing (4x11x4mm)  [BB-1140P]

Yokomo BB-1140P Pure Evolution SPEC Racing Motor Bearing (4x11x4mm)
Price:
CAD$5.94
Brand:
Yokomo
Model:
BB-1140P
GTIN:
11
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High-speed motor bearing for R/C (4x11x4mm)

This 4x11x4mm metal racing motor bearing is intended for electric R/C motor use. The BB-1140P from Yokomo's Pure Evolution line is offered as a direct replacement sized to fit motors that accept the 4x11x4mm form factor, providing reduced rotational friction and stable shaft support at high RPMs.

Installation notes: always confirm the bearing inner and outer diameters match your motor housing and shaft before removing the old unit. When installing, press the bearing squarely and keep it aligned with the shaft and motor endbell to avoid scoring the shaft or seating the bearing off-axis. After reassembly, verify the rotor spins freely without wobble or binding.

Tuning and maintenance: this bearing serves as a low-friction support that can affect heat buildup and service life under load. Inspect bearings regularly for roughness, play, or discoloration and replace any that show wear. Avoid exposing bearings to moisture and track debris to extend service intervals.
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.

How do I check if the BB-1140P fits my motor?

Measure your motor's bearing bore and shaft journal; if they match 4x11x4mm then the BB-1140P is the correct size. Always confirm both inner and outer dimensions before buying.

What is the safest way to replace the bearing?

Remove the motor from the chassis and take off the endbell. Extract the old bearing carefully, then press the new BB-1140P in squarely using a suitable tool or arbor to avoid damaging the shaft. Reassemble and check for smooth free spin.

How should I maintain bearings to extend life?

Keep bearings free from grit and moisture, inspect for roughness or play after each session, and replace them when performance drops. Light, appropriate lubrication and clean housing areas help prolong bearing life.

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