3RACING Double Metal Shield Bearings 3RB-MR84-ZZ/2 4x8x3mm Pair  [3RB-MR84-ZZ/2]

3RACING Double Metal Shield Bearing 4 x 8 x 3 mm (2 pcs) - 3RB-MR84-ZZ/2
Price:
£1.13
Brand:
3Racing
Model:
3RB-MR84-ZZ/2
Condition:
Brand New
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Keep Your Model Rolling Smoothly with 3RACING 3RB-MR84-ZZ/2

These 4x8x3mm 3RACING double metal shield bearings are a compact upgrade for improving wheel and shaft rotation. The pair is suitable for regular servicing or targeted part replacements on smaller RC platforms.

Robust Shields for Cleaner Operation

Double metal shields provide a good balance between low friction and protection from coarse contaminants, helping bearings stay serviceable over many runs. That makes them appropriate for track days and casual off-road use.

Straightforward Fitment Across Models

The 4x8x3mm size is common in many touring and 1/12 to 1/10 scale models, making these bearings a handy spare for a variety of hobby projects and repairs.

Will these reduce drivetrain drag

Yes, replacing worn bearings with smooth double shield units can lower rolling resistance and improve drivetrain efficiency if the rest of the system is well set up.

Are they compatible with sealed gearboxes

They can be used in many sealed applications provided the housing accepts 4x8x3mm bearings and there is adequate clearance for the shields.

What is the best way to fit them without damage

Press on the outer race using a drift or bearing tool, avoid hammering the inner race, and confirm free spin after seating to ensure they were not damaged on install.

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