3Racing 3RB-MR74-ZZ/2 High Precision 4x7x2.5mm Shielded Bearings  [3RB-MR74-ZZ/2]

3RACING Double Metal Shield Bearing 4 x 7 x 2.5 mm (2 pcs) - 3RB-MR74-ZZ/2
Price:
USD$1.60
Brand:
3Racing
Model:
3RB-MR74-ZZ/2
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Performance oriented bearings by 3Racing 3RB-MR74-ZZ/2

For racers and tuners prioritising consistent bearing behaviour, the 3Racing 3RB-MR74-ZZ/2 double metal shield bearings deliver predictable rolling resistance and serviceability. At 4x7x2.5mm these bearings are compatible with many common shafts and hubs used in competition cars, enabling precise setup adjustments and repeatable performance.

Shielded races for cleaner operation

The metal shields minimise contaminant ingress while keeping drag low, which helps sustain rotational precision under demanding track conditions. This construction supports longer service intervals between maintenance cycles when compared with exposed types.

Practical fitment for tuning and spares

These bearings are a direct fit for numerous drivetrain and wheel applications, making them a cost effective upgrade or spare for teams refining suspension and transmission setups. They are suited to riders seeking predictable feedback from drive components.

What tolerances should I expect from these bearings?

Expect consistent factory tolerances suitable for hobby racing; they provide stable running but are not high precision ABEC-class parts used in industrial applications.

Are these bearings recommended for high RPM motor shafts?

They perform well in common RC motor and wheel RPM ranges, but ensure press fits and clearances are correct to avoid axial loading that can shorten life.

What maintenance do competitive teams perform?

Teams typically inspect for play, clean external contaminants, and re-lubricate with light race oil between events to keep rotational friction consistent.