3RACING 3RB-693-ZZ/2 Racing Double Metal Shield Bearings 3x8x4mm  [3RB-693-ZZ/2]

3RACING Double Metal Shield Bearing 3 x 8 x 4 mm (2 pcs) - 3RB-693-ZZ/2
Price:
USD$1.70
Brand:
3Racing
Model:
3RB-693-ZZ/2
Condition:
Brand New
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Race-focused bearing upgrade for precise rotation

The 3RACING 3RB-693-ZZ/2 double metal shield bearings, dimensioned 3 x 8 x 4 mm, are intended as a lightweight performance upgrade for competitive setups. This pair reduces rolling resistance while offering a durable shield against track debris.

Application and tuning notes

These bearings are appropriate for wheel hubs, idler shafts, and light gearbox points where low friction and consistent spin are required. When optimizing handling and acceleration, fitting low-drag bearings like these can contribute to marginal gains across a full race program.

Technical advantages of metal shielding

Metal shields provide a robust barrier to abrasive solids without the drag penalty of some full seals. For racing teams looking to balance protection with high-speed bearing performance, these units are a practical choice as part of a broader setup and maintenance routine.

What lubrication is recommended before fitting?

Apply a light high-speed bearing oil or low-viscosity grease sparingly to the race before installation to preserve free spin at high RPM.

Should I use these in high-torque differentials?

They suit low to moderate torque points; for heavy differential loading consider higher-spec sealed bearings rated for increased thrust and radial stress.

How do metal shields affect bearing cooling?

Metal shields have minimal impact on thermal dissipation compared to open bearings; they maintain low friction which helps limit heat buildup during short, intense runs.