489-2731 Crankshaft AS CAT spare part

489-2731 Crankshaft AS CAT spare part Featured Image
  • 489-2731 Crankshaft AS CAT spare part
  • 489-2731 Crankshaft AS CAT spare part
  • 489-2731 Crankshaft AS CAT spare part

Short Description:

448-2620 CAT machined electronic crankshaft fits CAT C4.4, 3054C, 3054E electronic control diesel engines. CNC precision machined with sensor signal pickup structure, converts piston reciprocating linear motion into rotary power for overhaul of 312D2, 318D2, 320GC excavators.


Product Detail

Product Tags

description

This crankshaft is the core transmission component for C7 / 3126 series engines with integrated counterweights and 50-tooth timing gear. It adopts forged blank, quenched and tempered, precision ground on journals, oil passages polished and surface hardened, with dynamic balance test finished before delivery. It resists alternating impact load from frequent start-stop of construction equipment, widely used for wheel excavators, asphalt pavers, road compactors, skidders and industrial pump units for medium-duty continuous operation in road construction and mining auxiliary works.

Part number: 489-2731
Alternative name: Crankshaft AS
Replacement part: 0R-2806
Fit engine: CAT 3116, 3126, 3126B, 3126E, C7
Fit machine: M318, M320, 320B excavator, AP series paver, CB/CP series compactor, skidder
Material: Forged alloy steel
Structure: Pre-installed counterweights, integrated 50T timing gear
Process: Forging, quenching & tempering, journal precision grinding, oil passage polishing, dynamic balance calibration
Net weight: 58.55 KG

Advantages

1. Integrally forged steel blank delivers excellent torsion resistance and alternating fatigue resistance, suitable for intermittent heavy load in road construction.
2. Main journals and connecting rod journals are precision machined with stable wear-resistant layer, slowing bearing wear effectively.
3. Built-in 50-tooth timing gear with high tooth accuracy keeps valve timing stable and reduces fuel injection failures.
4. Pre-assembled counterweights with factory dynamic balance calibration reduce engine vibration and extend service life of surrounding parts.
5. Built-through lubrication oil passages with reasonable layout guarantee stable oil supply under variable load conditions.
6. OE standard dimension for direct replacement, no extra machining required.

FAQ 

Q1: Can 489-2731 interchange with 0R-2806?
A1: Yes. 0R-2806 is the alternative part number for this crankshaft with the same fitment.
Q2: Can this crankshaft fit C7.1 engine?
A2: Not interchangeable. C7.1 differs in crank throw, journal size and gear parameters.
Q3: Which spare parts should be renewed together with crankshaft?
A3: Main bearings, connecting rod bearings, thrust washers, front and rear oil seals and main bearing bolts are recommended.
Q4: How to protect the timing gear during crankshaft storage?
A4: Coat gear with anti-rust grease, wrap with soft protective film and support on multi-point fixture to avoid impact and bending.

our warehouse

our warehouse

Pack and ship

Pack and ship


  • Previous:
  • Next:
    • Write your message here and send it to us

    Products categories