490-0287 Crankshaft GP CAT spare part

490-0287 Crankshaft GP CAT spare part Featured Image
  • 490-0287 Crankshaft GP CAT spare part
  • 490-0287 Crankshaft GP CAT spare part
  • 490-0287 Crankshaft GP CAT spare part

Short Description:

484-3630 CAT one-piece forged crankshaft assembly with induction hardened journals and internal oil galleries. It converts piston reciprocating motion into rotary power for overhaul of CAT C18 engines fitted on mining trucks, large excavators and generator sets.


Product Detail

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description

This crankshaft is the core rotating component of CAT C1.7 three-cylinder small diesel engine. It is forged from alloy steel as one piece with integrated counterweights. Journals are surface hardened with internal oil galleries. Stress relief, crack inspection, journal grinding and dynamic balance are finished before delivery. C1.7 engines are widely equipped on 301.7CR mini excavators, compact skid steers and portable power units with frequent start-stop cycles. It is a common replacement part for compact Cat equipment overhaul.

Part number: 490-0287
Alternative name: Crankshaft GP
Fit engine: CAT C1.7 three-cylinder diesel engine
Fit machine: 301.7CR mini excavator, compact skid steer loader, portable generator set
Material: Corrosion Preventative Fluid
Structure: One-piece integrated counterweights with front gear mounting seat
Process: Forging, stress relief, quenching & tempering, journal precision grinding, crack inspection, dynamic balance calibration
Matching system: C1.7 compact construction diesel engine

Advantages

1. Compact one-piece forged design, fits tight engine compartment of mini machines.
2. Hardened journals resist wear under frequent start-stop cycles.
3. Internal oil galleries provide stable oil supply for main and rod bearings.
4. Factory dynamic balance reduces vibration and protects seals and gears.
5. Optimized crank fillet improves fatigue resistance under cyclic load.
6. Popular spare part for small construction fleets in Southeast Asia and Africa.

FAQ 

Q1: Can 490-0287 fit C1.5 engine directly?
A1: Not interchangeable. C1.5 and C1.7 differ in stroke, crank throw and flange. Verify part 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 front gear be replaced together with crankshaft?
A3: Inspect gear teeth. Replace if pitting, cracks or chipping are found.
Q4: How to store this small crankshaft?
A4: Coat journals with anti-rust grease and support at two points to avoid bending.

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