CATBearing & Bushing

7D8636 7D8637 — Cat 120g 120H

This is a high-performance bearing designed to withstand significant loads and reduce friction in the power train or hydraulic systems of Caterpillar equipment. Manufactured to meet stringent quality standards, it provides reliable operation and extended service life compared to a worn bearing that would exhibit excessive play and noise. Operators may notice increased vibration, audible grinding, or a loss of power transmission smoothness when this bearing begins to fail.

7D8637 – Part No 7D8636 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBearing & Bushing
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Never strike bearings directly — use a bearing press or driver set. Heat housing (not bearing) to ease installation. Replace bearings in sets where applicable. Check housing bore diameter before fitting — out-of-round bores destroy new bearings.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeTapered Roller Bearing
MaterialHardened Steel Alloy
ApplicationAxle or transmission component support
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Initial symptoms of a failing bearing may include a distinct clicking or grinding noise, especially when turning or under load. If left unaddressed, the bearing will develop excessive play, leading to vibration and potential misalignment of gears or shafts. Continued operation risks damage to the differential, transmission, or axle components.

Installation Tip

Carefully clean the bearing housing and the shaft to remove all traces of old lubricant and debris before installing the new bearing. Ensure the bearing is seated fully and squarely to prevent uneven stress on the rollers and races.

Service Note

Inspect the mating gears, seals, and lubricant for any signs of contamination or excessive wear that could indicate a broader issue within the drivetrain.