8-speed Automatic Transmission Planetary Gear 1087240049
The 8-speed automatic transmission planetary gearset is a core torque-multiplying component. Key points:
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Layout – Typically uses Lepelletier design: 1 Ravigneaux + 1 simple planetary set for compact, efficient gear spread.
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Function – Enables 8 ratios via controlled clutch/band engagement (gear transitions under load).
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Durability – Hardened steel gears with precision-ground teeth; carrier bushings withstand high radial loads.
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Failure Modes – Bearing wear, cracked carriers, or pitted gears (causing whine, slippage, or shift flares).



Automatic planetary gear
,8-speed planetary gear
,1087240049 Automatic Transmission Planetary Gear
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