Description
CAT 4F-9414 46.2mm Inner Diameter Crankshaft Bearing
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CAT 4F-9414 is a Caterpillar genuine crankshaft main bearing (aluminum-based alloy bearing shell), adapted for the crankshaft support of the 955C tracked loader engine. The following is purely precise information (no additional description) Cat®…:
Core Parameters and Information
Item Details
Part Model: CAT 4F-9414 (4F9414) Crankshaft Main Bearing (Lower Shell)
Part Type: Aluminum-based alloy bearing shell, Babbitt alloy anti-friction layer, withstands radial loads, adapted for engine crankshaft main journals
Material: Aluminum-tin alloy (AlSn20Cu) base material, surface coated with 0.03-0.05mm Babbitt alloy anti-friction layer, steel backing thickness 2.0mm
Key Dimensions: Inner diameter 46.22mm (1.820in), outer diameter 58.00mm, width 28.58mm, oil groove width 3.2mm, oil hole diameter 4.8mm
Structural Features: With single oil groove + Oil hole, locating lip thickness 1.2mm, steel back interference 0.02-0.04mm, anti-friction layer hardness HB25-35
Compatible Structure: Compatible crankshaft main journal diameter 46.22mm (tolerance h6), mounting seat hole diameter 58.00mm (tolerance H7)
Applicable Operating Conditions: Engine speed ≤2800rpm, operating temperature -30℃ to +150℃, maximum radial load ≤65kN, lubrication pressure 0.2-0.5MPa
Compatible Models and Assemblies: Tracked loader: CAT 955C (compatible engine model D333)
Compatible Assembly: D333 engine crankshaft main bearing assembly (2nd/3rd/4th main bearing lower shell)
Installation and Fitting Points: Clean the journal and bearing housing before installation, ensuring no oil or rust. Align the bearing shell locating lip with the seat hole locating groove to ensure no misalignment.
The clearance between the bearing shell and journal should be 0.025-0.040mm. The bearing shell and bearing seat should have an interference fit with a fit ≥95% and no warping.
After installation, check that the radial runout is ≤0.03mm, the lubrication holes are aligned, and lubrication is unobstructed. Tighten the bolts in two stages to the specified torque (65-75 N·m).
Use a special puller to remove the crankshaft during disassembly. When replacing the crankshaft, check for journal wear. If the roundness/cylindricity is >0.015mm, repair or replace the crankshaft.
