PC1250‑7 PC1250‑8 6240‑31‑1300 6D170 SAA6D170E‑3 Engine Crankshaft Compatible with Komatsu Large Excavator

1. Product Overview & Wholesale Price Range

The 6D170 SAA6D170E‑3 Crankshaft (Part # 6240‑31‑1300) is heavy‑duty alloy steel main shaft for 6‑cylinder large displacement diesel engine, widely used on Komatsu mining excavators.

• Factory Wholesale Price: $1350‑2100 USD Direct factory supply, competitive price for repair shops & dealers
• Material: Alloy Steel, journal high‑frequency quenching HRC55‑60
• MOQ: 1 Unit, quantity discount for bulk orders
• Stock Lead‑time: In stock, 1‑3 working days dispatch globally
• Warranty: 12‑month replacement warranty, dynamic balance & magnetic particle crack inspection before shipment

2. Machine & Engine Compatibility List

Direct fit for Komatsu large mining construction machines:

• Excavator: PC1250‑7, PC1250‑8, PC1250SP‑7, PC1250SP‑8
• Engine Model: 6D170, SAA6D170E‑3
• OEM Part Number: 6240‑31‑1300

3. Typical 6D170 Crankshaft Fault Symptoms

• Journal scratch & wear: Dirty engine oil leads to journal damage. Replace complete new crankshaft, avoid reground used shaft.
• Engine knocking & bearing burning: Heavy mining operation causes bearing failure. Change crankshaft together with main and connecting rod bearing set.
• Crankshaft fatigue crack: Long‑term overload working. Use brand‑new qualified crankshaft for mining site.
• Shaft‑end oil seal leaking: Wear groove on shaft sealing position. Install new crankshaft and matching oil seal kits.
• Severe engine vibration: Shaft bending or imbalance. Only use 100% dynamically balanced crankshaft.

4. Related Komatsu Mining Excavator Spare Parts

5. Frequently Asked Questions

Q1: How do I confirm this crankshaft fits my PC1250‑8 machine?
A: Confirm engine SAA6D170E‑3 and OEM No.6240‑31‑1300. Send engine serial number to us for cross‑check compatibility.

Q2: What inspections are carried out before shipping?
A: Each crankshaft undergoes dynamic balance test and magnetic particle crack detection to eliminate hidden risk for heavy mining working conditions.

Q3: Do you supply full engine rebuild kits for 6D170 engine?
A: Yes, bearing shells, piston kits, cylinder liners and full overhaul kits are available for 6D170 engine for one‑stop sourcing.