Propelparts
+1-877-228-3765 |   Ships Worldwide   |   Need Different Part

Main Bearings

Caterpillar Main Bearings Protect Against Costly Engine Failures

Caterpillar main bearings support the crankshaft and allow it to rotate smoothly within the engine block, absorbing the forces generated by combustion and ensuring consistent, low-friction operation. Each bearing set is precision-engineered for specific CAT engine models, including 3116, 3128, 3406, C11, C13, C15, 3508, 3512, 3516, D353, D398, and many more. These bearings are available in standard sizes and a range of undersized options (such as 0.25mm, 0.50mm, 0.51mm, 0.7mm), allowing for proper fit even after machining or wear on the crankshaft journals.

Constructed from tri-metal, steel-backed aluminum, or similar robust materials, high quality replacement main bearings for Caterpillar equipment are designed for high load capacity, heat resistance, and long service life helping prevent premature crankshaft wear and engine failures. Correct installation, lubrication, and regular inspection are essential to maintain proper bearing clearance and oil pressure.

Propel Parts supplies a comprehensive range of high quality replacement main bearings for Caterpillar equipment, with clear compatibility listings and fast shipping. This ensures you can quickly find and install the correct bearing set for your engine, minimizing downtime and protecting your investment.

Frequently Asked Questions (FAQs)

|
Category

Main bearings support the crankshaft, reduce friction, and help maintain alignment, allowing smooth, efficient engine operation under heavy loads.

Signs include excessive crankshaft movement, low oil pressure, unusual engine noises, or visible bearing or journal wear. Replace during major overhauls or at any sign of distress.

No, each set is designed for specific engine models and may require a standard or undersize bearing based on your crankshaft’s conditional ways to match your engine’s part number and size.

Genuine or premium quality replacement bearings for CAT equipment are engineered for precise fit, durability, and optimal oil film maintenance, helping avoid crankshaft damage and costly engine repairs.

With advanced mechanical skills and proper tools, you can install main bearings by following Caterpillar’s strict installation and torque procedures.

Propel Parts offers a wide selection of high quality replacement main bearings for CAT equipment, with expert support and fast delivery for accurate, timely replacements. Our Technical Team is ready to help you to choose the right main bearings for your equipment with confidence.