3Racing 3RB-MR105ZZ/B3/2 Racing Grade 5x10x3mm Bearings  [3RB-MR105ZZ/B3/2]

3RACING Bearing Metal Shield Double Metal Shield Bearing 5 x 10 x 3 mm (2 pcs) - 3RB-MR105ZZ/B3/2
Price:
USD$1.70
Brand:
3Racing
Model:
3RB-MR105ZZ/B3/2
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Race-focused shielded bearings for precise drivetrain response

The 3Racing 3RB-MR105ZZ/B3/2 bearings are specified to support predictable rotation under tuning and race conditions. Double metal shields provide a thin protective layer that keeps contaminants away from the races while allowing tight clearances and minimal drag. At 5x10x3mm these bearings are suitable for light-weight hubs, idler shafts, and gearbox spindles in competition packs.

Technical highlights for setup and tuning

  • Double Metal Shield: Slim shielding preserves bearing tolerance for accurate alignment and steady RPM behavior.
  • Size: 5x10x3mm, compatible with common race-oriented mounting points.
  • Tuning Use: Useful as a low-cost way to reduce drivetrain friction and maintain consistent lap times.

What clearance should I expect when installing these bearings?

Aim for a press fit on the outer race with the inner race free on the shaft. Tighter outer fits prevent spin in housings while allowing inner-race rotation with minimal axial play.

How do these bearings affect gear mesh and efficiency?

Lower drag bearings reduce parasitic losses in the drivetrain, helping maintain consistent gear mesh under load and improving throttle response in tuned setups.

Are these bearings a suitable upgrade for club level racing?

They represent a cost-effective upgrade for club racers seeking reduced friction without moving to expensive ceramic or sealed units; monitor wear and replace as part of routine service cycles.