Description
CAT 4F-9417 1.82\ Crankshaft Bearing
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The CAT 4F-9417 is a Caterpillar genuine aluminum-based crankshaft main bearing, adapted for engine crankshaft main journal support, used to bear radial loads and dissipate heat, ensuring smooth crankshaft rotation. The following are precise original part information:
Core Technical Parameters
Item Details
Part Model: CAT 4F-9417 (4F9417) 1.82″ Crankshaft Main Bearing, Engine Main Journal Radial Support Bearing, Weight Approx. 0.18 kg (0.40 lb)
Core Material: Aluminum-based alloy (Al-Sn-Si system), with good embeddability, conformability, and anti-seize properties, suitable for high-load, high-temperature conditions in diesel engines, effectively dissipating heat.
Key Dimensions: Inner diameter 46.23 mm (1.82 in), outer diameter 57.15 mm (2.25 in), width 28.58 mm (1.125 in), thin-walled bearing structure with locating lip, suitable for main journal diameter 46.23 mm. Mounting Position
Structural Features: Thin-walled bearing type with a positioning lip to prevent displacement; aluminum-based alloy layer allows for rapid oil film formation; suitable for high-speed crankshaft rotation and alternating load conditions, ensuring stable crankshaft operation and reducing main journal wear.
Compatible Models: Compatible with CAT 3304/3306 engines, and can be used with 955C tracked loaders, D315 marine engines, etc., for crankshaft main journal support.
Accessories: Compatible with main journal diameter 46.23 mm. For crankshaft installation, use a torque wrench to tighten the main bearing cap bolts according to specifications. When replacing, it is recommended to simultaneously check the roundness, cylindricity, and surface roughness of the crankshaft main journal.
Core Functions and Installation Points
Main Journal Support and Heat Dissipation: Used between the engine crankshaft main journal and the cylinder block bearing housing, it bears radial loads, reduces friction, and quickly dissipates bearing heat, adapting to high-speed, alternating load conditions to ensure stable engine operation.
Installation Specifications
Clean the bearing housing, crankshaft main journal, and bearing shell surfaces, removing oil and impurities. Check the fit between the bearing shell and bearing housing.
Assemble according to original factory requirements, ensuring the locating lip is embedded in the bearing housing locating groove, the bearing shell is not misaligned, and apply engine-specific assembly lubricant.
Tighten the main bearing cap bolts to the specified torque and sequence. After installation, check the crankshaft’s rotational flexibility for any jamming.
Maintenance Recommendations
When the engine undergoes major overhaul or experiences abnormal noises or oil pressure, check the wear of this bearing. If the alloy layer is peeling, burned, or the clearance exceeds the standard, replace it with an original factory bearing immediately.
When replacing, you must use the same model CAT bearing. 4F-9417 Genuine part, to avoid crankshaft wear and engine failure caused by mismatched materials or dimensions.
