484-3630 Crankshaft GP CAT spare part

484-3630 Crankshaft GP CAT spare part Featured Image
  • 484-3630 Crankshaft GP CAT spare part
  • 484-3630 Crankshaft GP CAT spare part

Short Description:

463-3918 CAT crankshaft main bearing, split bimetallic thin-wall main shell with steel backing and aluminum alloy lining. It supports crank main journals and maintains oil film for overhaul of CAT C15 heavy-duty diesel engine.


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description

This crankshaft is the core rotating component of heavy-duty C18 diesel engine. It is forged from high-strength alloy steel in one piece with integrated counterweights. Main and rod journals are induction hardened and fillet rolled, with full internal oil galleries. Stress relief, MPI crack inspection, journal precision grinding and dynamic balance test are finished before delivery. C18 engines are widely installed on 770G,772G mining trucks, 390F,395 excavators and high-power generator sets under cyclic heavy impact load. The one-piece design eliminates loose counterweight bolt failure, it is a popular overhaul spare part for C18 powertrain.

Part number: 484-3630
Alternative name: Crankshaft GP
Fit engine: CAT C18 diesel engine
Fit machine: 390F, 395 excavator, 770G, 772G mining truck, high-power industrial generator set
Material: Forged alloy steel, induction hardened journals
Structure: One-piece integrated counterweights with timing drive flange
Process: Forging, stress relief, quenching & tempering, journal precision grinding, fillet rolling strengthening, oil passage polishing, crack inspection, dynamic balance calibration
Matching system: C18 heavy-duty construction diesel engine

Advantages

1. One-piece forged steel without separate counterweight bolts, removes risk of loose or falling counterweights.
2. Fillet rolling reduces stress concentration and improves fatigue fracture resistance.
3. Uniform hardened journal layer resists wear and pitting for mining impact duty.
4. Internal oil galleries deliver stable oil flow for main and connecting rod bearing lubrication.
5. Factory dynamic balance reduces vibration and protects damper, oil seals and timing gears.
6. Compatible with multiple C18 construction variants, widely stocked for overseas mining fleets.

FAQ 

Q1: Can 484-3630 fit C15 engine directly?
A1: Not interchangeable. C15 and C18 differ in stroke, crank throw and flange. Verify engine serial number.
Q2: Can journals of this crank be reground after wear?
A2: Check remaining hardened layer depth first. Regrinding is allowed only if sufficient hard layer remains.
Q3: Must timing gear be replaced together with crankshaft?
A3: Inspect gear teeth. Replace if pitting, cracks or chipping are found.
Q4: How to store the crankshaft for long term?
A4: Coat journals, flange and sealing surfaces with anti-rust grease, support on multi-point fixture to avoid bending.

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