MGB (Micro-Grooved Bearings) are engine bearings
that have numerous shallow circumferential
grooves covering their surface (Pitch: 0.1
to 1.0 mm; Groove depth: 1 to 10µm), much like a music record disk.
Notwithstanding the conventional concept
in that the surface should be smooth, the
Microgrooves greatly contributes to engine
noise and vibration reduction. MGB have been
mounted in the Toyota Celsior for the first
time, and have become popularly used for
various other vehicle models.
Effects
MGB have various and superior performance
characteristics and high potential, such
as in vehicle comfortability improvement,
environmental control solutions including
low fuel consumption and light-weight vehicle
realization.
- Silent performance improvement
- Fuel consumption reduction
- Starter size reduction
- Bearing width reduction
- Oil cooler elimination
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