CAT 8E-3609 COVER BRG

CAT 8E-3609 is a Caterpillar original equipment engine crankshaft main bearing cap, compatible with many heavy-duty engines. It is used to secure the main bearing, position the crankshaft, bear the radial load during engine operation, and ensure stable crankshaft operation. The following are the key details.

Core Technical Parameters

Item Details
Part Model: CAT 8E-3609 (Crankshaft Main Bearing Cap, Single-Cylinder Position, Suitable for Heavy-Duty Engines)

Material: Ductile Iron (GGG40/45), Tensile Strength ≥ 400 MPa, Yield Strength ≥ 240 MPa, Hardness HB 170-230, Excellent Vibration Damping and Rigidity

Key Dimensions: Suitable main bearing inner diameter 100 mm, bearing cap length 150 mm, width 80 mm, height 60 mm, bolt hole diameter 14 mm, locating pin hole diameter 8 mm

Single Weight: Approx. 4.2 kg (9.259 lbs)

Operating Parameters: Suitable temperature -40℃ to +180℃, maximum radial load 80 kN, suitable engine speed ≤ 2500 rpm

Core Features Ductile iron is a high-rigidity material with excellent vibration damping. The locating pin and bolt hole design ensures assembly precision. It is used to fix the main bearing, position the crankshaft, and bear radial loads.

Structure and Core Functions:

Ductile Iron Structure: Utilizing GGG40/45 ductile iron, it combines high strength, high toughness, and good vibration damping, making it suitable for the high-load conditions of heavy-duty engines and preventing bearing cap deformation or breakage.

Precise Positioning Design: Equipped with locating pin holes for precise positioning with the cylinder block, ensuring the coaxiality of the main bearing and crankshaft, controlling the main bearing clearance within the design range, and reducing vibration and noise during crankshaft operation.

Radial Load Bearing: Bears the radial load during crankshaft operation, fixes the main bearing, prevents main bearing displacement, ensures stable crankshaft operation, and extends engine life.

Sealing and Lubrication Guarantee: A sealing groove is provided at the mating surface with the cylinder block, allowing for the installation of a gasket to prevent oil leakage and ensure unobstructed oil passages in the main bearing lubrication system, ensuring adequate lubrication of the main bearing.

Compatible Models and Application Scenarios

Compatible Engines: CAT 3406, 3408, 3412, and other heavy-duty diesel engines, commonly used in construction machinery, generator sets, and marine power equipment.

Compatible Equipment: CAT D8R/D9R bulldozers, 992G loaders, 777D mining trucks, and other heavy-duty construction machinery, as well as CAT marine generator sets and oilfield power equipment.

Core Application: Installed at the main bearing housing in the engine block, it fixes the main bearing, positions the crankshaft, bears the radial load of the crankshaft, ensures stable engine operation, and is suitable for high-load, high-speed heavy-duty operating scenarios.