Camshaft Bearing Set for Isuzu 4HK1/6HK1 & Hitachi ZX240-3–350L-3

Product Specifications

Compatible Models

Tired of Camshaft Bearing Failures on Your Isuzu 4HK1 or Hitachi ZX240-3 Excavator?

One failed camshaft bearing can stall your excavator for days — costing $2,000–$5,000 in idle time per day. Counterfeit sets wear out 1.5× faster, leading to oil pressure drops, valve timing errors, and catastrophic engine damage. OEM replacements often take 3+ weeks to arrive, delaying critical infrastructure or mining projects. And sourcing matching bearings across Isuzu and Hitachi machines from separate suppliers adds risk and coordination overhead.

OEM-Equivalent Quality, In Stock and Ready to Ship

This camshaft bearing set meets ISO 9001-certified factory specifications for dimensional accuracy, surface hardness (HRC 58–62), and load-bearing capacity — verified by pre-shipment performance testing. Built for high-cycle engine rebuilds in heavy-duty excavation and quarrying applications, it delivers the same service life as original equipment when installed correctly. With 10 years’ experience supplying replacement parts to 120+ countries, XUNPO ensures consistent fit and function across all listed Isuzu 4HK1 and Hitachi ZX240-3–ZX350L-3 models.

Where This Part Works

This bearing set operates under continuous high-load conditions in construction sites, open-pit mines, port material handling, and demolition zones — where engines run at 70–90% throttle for 10+ hours daily. It supports precise camshaft rotation under thermal cycling (–20°C to +120°C ambient) and high oil film shear stress. Choosing a non-compliant bearing risks cam walk, timing chain stretch, and loss of hydraulic pump drive synchronization — directly impacting bucket cycle time and fuel efficiency.

Engineering Details That Matter

Each bearing shell is forged from SAE 52100 bearing steel, not cast iron, ensuring superior fatigue resistance at 3,000+ RPM sustained operation. The internal diameter tolerance is held to ±0.005 mm — critical for maintaining correct oil clearance (0.03–0.05 mm) and hydrodynamic lubrication. Surface finish is Ra ≤ 0.2 μm to prevent micro-welding during cold starts. Hard-chrome plating on thrust faces resists axial scuffing under high-torque transient loads. All dimensions match OEM blueprints for direct interchangeability without line-boring or reaming.

The Real Cost of Wrong Parts

A $45 counterfeit camshaft bearing may save $20 upfront — but causes premature failure within 300 operating hours. That triggers $1,200 in labor for engine disassembly, $800 in new gaskets and seals, $300 in diagnostic downtime, and up to $15,000 in lost productivity on a scheduled road project. This set complies fully with ISO 286-2 (geometric tolerances) and SAE J1397 (bearing material standards), reducing total cost of ownership (TCO) by 37% over 2,000-hour service intervals versus low-grade alternatives. Replacement camshaft bearing for Isuzu 4HK1 engine is not a commodity — it’s an engineered interface.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually wrapped in rust-inhibiting paper, secured in custom foam inserts inside rigid corrugated boxes
• In-stock items ship within 2–5 working days after order confirmation
• Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — quoted based on destination and urgency
• Real-time tracking number provided upon dispatch, with proactive delay alerts
• MOQ is 1 piece — designed for urgent field repairs and small workshop inventories

Get Your Camshaft Bearing Set Now

Your excavator isn’t generating revenue while it’s down. Send us your machine model (e.g., Hitachi ZX240-3 or Isuzu 4HK1 engine serial), required quantity, and destination — we’ll email a competitive quote within 24 hours. First-time buyers may request a sample for physical verification before bulk ordering. No minimum order value. Fast shipping starts the moment you reply.

Frequently Asked Questions