351-9210 Crankshaft GP CAT spare part

351-9210 Crankshaft GP CAT spare part Featured Image
  • 351-9210 Crankshaft GP CAT spare part
  • 351-9210 Crankshaft GP CAT spare part
  • 351-9210 Crankshaft GP CAT spare part

Short Description:

2H-2449 CAT main bearing assembly, 0.025 inch oversize intermediate main shell, split bimetallic bearing for middle crank journals of legacy D342, D343 heavy diesel engines for reground crank overhaul.


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description

This crankshaft is the key rotating component for G3520 gas generator engine. It is forged from high-strength alloy steel with bolt-on removable counterweights. Main and rod journals are surface hardened with internal oil galleries. Stress relief, MPI crack inspection and dynamic balance test are completed before delivery. G3520 engines are widely used in continuous-duty gas power generator sets. Damaged counterweights can be replaced separately instead of the whole crankshaft, which cuts overhaul cost for power stations.

Part number: 351-9210
Alternative name: Crankshaft GP
Fit engine: CAT G3520 gas engine
Fit machine: High-power gas generator set, industrial gas power unit
Material: Forged alloy steel, induction hardened journals
Structure: Bolt-on split counterweights, integrated drive flange
Process: Forging, stress relief, quenching & tempering, journal precision grinding, fillet strengthening, oil passage polishing, crack inspection, dynamic balance calibration
Matching system: G3520 gas generator engine

Advantages

1. Bolt-on split counterweight design allows single counterweight replacement and reduces power station overhaul cost.
2. High-strength forged alloy steel delivers excellent torsion and fatigue resistance for long continuous full load of gas generators.
3. Reinforced fillet reduces stress concentration and crank fracture risk.
4. Internal through oil galleries provide stable oil supply to maintain bearing lubrication.
5. Factory dynamic balance calibration suppresses vibration and protects damper, oil seals and drive gears.
6. Optimized for gas engine operating characteristics of low speed and long steady load.

FAQ 

Q1: Can 351-9210 fit G3516 gas engine directly?
A1: Not interchangeable. G3516 and G3520 differ in crank throw, counterweight and flange. Verify engine serial number.
Q2: Can dented counterweight be ground and reused?
A2: No. Dents change mass distribution and cause unbalance. Counterweight must be replaced.
Q3: Which spare parts should be renewed together with crankshaft?
A3: Main bearings, connecting rod bearings, thrust washers, front/rear oil seals, main bearing bolts and counterweight bolts are recommended.
Q4: How to store the crankshaft for long term?
A4: Coat journals, flange and mating surfaces with anti-rust grease, support on multi-point fixture to avoid bending.

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