6 x 15 x 5 mm Hirobo HI2500045 696ZZ Shielded Bearings (2pcs)  [HI2500045]

Shielded 696ZZ Bearings for Small Electric Helicopters

This Hirobo set supplies two 6 x 15 x 5 mm 696ZZ shielded bearings intended for RC helicopter use and modest drivetrain fixes. The double-shield 696ZZ format helps keep grit out of the races while allowing smooth rotation at model-scale speeds.

Where they fit: these bearings are intended for shafts and housings that specify 6x15x5 mm components, frequently found in rotor heads, compact gearboxes, and motor shaft supports. Use them when the original bearings share the same size and shield configuration.

Fitting advice and tuning: install by pressing on the outer race only, using an appropriate driver or tube, and avoid hammering the inner race. Confirm free-spin after seating. Swapping worn bearings can reduce vibration and play, helping with smoother rotor operation and crisper tail feel.

Care recommendations: keep spares dry and free of contaminants. A light model oil is appropriate if lubrication is needed; heavy greases can attract dust. Inspect periodically for roughness or side play that signals replacement is due.