R4 Bearing for Large Grommet

#0051

DESCRIPTION

• Name: R4 Bearing for Large Grommet

• Purpose: Fits inside the large (blue) pulley/grommet assembly—key for guiding the drive belt and maintaining proper belt tension and alignment.

• Compatible Models: Gemini Taurus 3, Revolution XT and also used in  Apollo when fitted with large pulleys

Why It Matters

The R4 bearing ensures the large pulley rotates smoothly under wet cutting conditions. A worn or damaged bearing can cause excessive friction, heat, belt wear, and misalignment of the blade.

Replacement Tips

• Inspect periodically—look for rough spinning, wobble, or noise under load.

• Replace one-to-one (you’ll typically need one R4 bearing per large pulley/grommet).

• Grease isn’t necessary—these are sealed bearings—but ensure the grommet housing stays clean.