3Racing 3RB-MR74-ZZ/2 4x7x2.5mm Metal Shield Bearing Pair  [3RB-MR74-ZZ/2]

3RACING Double Metal Shield Bearing 4 x 7 x 2.5 mm (2 pcs) - 3RB-MR74-ZZ/2
Price:
NZD$2.75
Brand:
3Racing
Model:
3RB-MR74-ZZ/2
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Consistent bearing performance from 3Racing 3RB-MR74-ZZ/2

RC tuners looking for steady, low-friction components will find the 3Racing 3RB-MR74-ZZ/2 double metal shield bearings a practical choice. At 4x7x2.5mm these bearings fit a range of common mounting points and help reduce drivetrain drag for smoother throttle response.

Durable shielded construction

The metal shields fitted to each bearing reduce the risk of contamination by blocking dirt and small particles. Built by 3Racing, the parts are aimed at hobbyists who want serviceable, long-lasting replacements that need minimal cleaning between runs.

Easy to swap into shop spares

Because of their standard dimensions, these double shield bearings slot into many RC assemblies, from wheels to idlers. They are a handy spare to keep in a tool box for quick maintenance and repairs.

Will these work in wet or muddy conditions?

The metal shields help keep out splashes and grit, but prolonged exposure to deep water or heavy mud will still require cleaning and inspection after the run.

Are they compatible with brushless motor shafts?

They can be used where the shaft and bore match 4x7x2.5mm dimensions; verify shaft diameter and housing fit before installation.

How do I maintain these bearings?

Inspect for dirt, apply a small amount of light lubricant as needed, and replace if you notice roughness or play in the race.

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