PC400-7 PC450-7 6151-35-1010 6D125 SAA6D125E‑2 Forged Steel Engine Crankshaft Compatible with Komatsu

1. Product Overview & Wholesale Price Range

The 6D125 / SAA6D125E‑2 Forged Steel Crankshaft (Part # 6151‑35‑1010) is heavy‑duty alloy steel main shaft for 6‑cylinder 11‑liter turbo diesel engine, widely used on large‑tonnage Komatsu excavators and wheel loaders.

• Factory Wholesale Price: $620‑1150 USD Direct factory supply, save big compared with local dealer price
• Material: 42CrMo Precision Forged Alloy Steel, journal high‑frequency hardening HRC55‑60
• MOQ: 1 Unit, batch discount for repair shop bulk orders
• Stock Lead‑time: In stock, 1‑3 working days dispatch worldwide
• Warranty: 12‑month replacement warranty, dynamic balance & magnetic particle crack test before delivery

2. Machine Model Compatibility List

Perfect replacement for below Komatsu heavy construction machines:

• Excavator: PC400‑7, PC400‑8, PC400LC‑7, PC400LC‑8
• Excavator: PC450‑7, PC450‑8, PC450LC‑7, PC450LC‑8
• Engine Type: 6D125‑2, SAA6D125E‑2
• OEM Part Number: 6151‑35‑1010

3. Common Crankshaft Fault Diagnosis Guide

Typical failure symptoms for Komatsu 6D125 engine crankshaft:

• Journal Scoring / Groove Wear: Oil contamination leads to journal damage. Solution: Install new forged crankshaft, avoid re‑grinded reused shaft.
• Metallic Knocking Noise & Rod Bearing Burnout: Excessive clearance from long‑time heavy load operation. Replace crankshaft together with main & rod bearing set.
• Crankshaft Fatigue Crack / Breakage: Overload operation or torsional damper failure. Use reinforced forged 42CrMo crankshaft for heavy‑load working site.
• Front / Rear Oil Seal Leakage: Seal‑journal wear groove. Fit new crankshaft plus new oil seal kits.
• Strong Engine Vibration: Shaft bending or imbalance. Only use 100% dynamically balanced new crankshaft assembly.

4. Related Popular Excavator Spare Parts

5. Frequently Asked Questions

Q1: How can I confirm this crankshaft fits my PC400‑7 machine?
A: Confirm engine model SAA6D125E‑2 and OEM casting No.6151‑35‑1010. You may send engine serial number to us for cross‑check fitment.

Q2: What testing is done on this 6D125 crankshaft before shipping?
A: Every crankshaft completes dynamic balance test and magnetic particle inspection for crack detection, to eliminate vibration risk for heavy‑load operation.

Q3: Do you also supply matching main bearing, conrod bearing and overhaul kits for 6D125 engine?
A: Yes, full engine overhaul kits, bearing shells, cylinder liner, piston kits are available for 6D125 series engine, one‑stop sourcing for engine rebuild work.