Product Features

• Structure: A set of precision-machined half-shell bearings made from a high-strength lead-tin bronze alloy with a multi-layer tri-metal coating (aluminum alloy overlay) for enhanced wear resistance. The set includes both upper and lower shells, some with oil grooves and feed holes for lubrication.

• Performance: Withstands extreme dynamic loads and engine temperatures up to 150°C, providing a low-friction surface for the crankshaft to rotate on. The tri-metal coating resists fatigue and corrosion, ensuring long service life even under heavy-duty operation.

• Design: Precision-engineered to match the original crankshaft and cylinder block dimensions, ensuring optimal oil clearance and precise crankshaft alignment.

Core Function

• Supports the crankshaft and absorbs the radial forces generated during engine operation, maintaining smooth rotation and preventing excessive wear.

• Distributes engine oil across the bearing surface through integrated grooves and holes, ensuring continuous lubrication and heat dissipation.

• Maintains precise crankshaft alignment, which is essential for proper engine balance, valve timing, and overall performance.A

Main Bearing Set C06AL-4W5738 SHANGCHAI – Premium Engine Bearing for Heavy-Duty Performance

When your SHANGCHAI engine demands unwavering reliability under extreme loads, the Main Bearing Set C06AL-4W5738 delivers precision-engineered crankshaft support that keeps your fleet running without costly downtime. Sourced directly from METTLEAD Truck Parts’ quality-controlled supply chain, this bearing set meets OEM dimensional tolerances and material specifications — giving procurement managers the confidence of factory-direct pricing without compromising on fitment accuracy.

This main bearing set is purpose-built to cradle the crankshaft journals of SHANGCHAI diesel engines, reducing friction, absorbing dynamic loads, and maintaining optimal oil film clearance across thousands of operating hours. Every shell in this set is engineered to speak the same language as your engine block — precise, durable, and ready to perform.

Key Features and Buyer Benefits

Engineered for Longevity

• Tri-metal construction — A steel backing, copper-lead alloy intermediate layer, and tin-aluminum overlay work together to resist fatigue, corrosion, and cavitation erosion under high cylinder pressures.
• Precision crush height and wall thickness — Ensures proper retention in the bearing cap and maintains designed oil clearance (typically 0.04–0.08 mm) for consistent hydrodynamic lubrication.
• Anti-seizure overlay — The soft running-in surface accommodates minor shaft imperfections and foreign particles, protecting the crankshaft from scoring during initial startup and throughout service life.

Direct Value for Procurement Managers

• OEM-equivalent fitment — Part number C06AL-4W5738 matches SHANGCHAI original specifications, eliminating guesswork and reducing return rates.
• Factory-direct pricing — METTLEAD’s direct supply model cuts intermediary markups by 15–30%, improving your per-unit cost structure on bulk orders.
• Rapid lead times — In-stock availability with typical dispatch within 3–7 working days, keeping your maintenance schedules on track.
• Custom packaging available — White-label and branded packaging options support your aftermarket distribution without additional sourcing complexity.

Technical Specifications

Application Scenarios — Where This Bearing Set Belongs

The Main Bearing Set C06AL-4W5738 finds its home inside SHANGCHAI-powered vehicles and equipment that shoulder the heaviest workloads across demanding environments:

• Heavy-duty trucks — SANY, XCMG, and LIUGONG mining dump trucks equipped with SHANGCHAI SC series engines rely on this bearing set during scheduled overhauls to restore crankshaft support integrity.
• Construction machinery — Wheel loaders, excavators, and bulldozers powered by SHANGCHAI diesel engines operating in dusty, high-vibration conditions benefit from the bearing’s fatigue-resistant design.
• Bus and coach fleets — Urban transit and long-haul coaches using SHANGCHAI powertrains depend on consistent bearing performance to meet tight service availability targets.
• Generator sets and marine applications — Stationary and marine SHANGCHAI engines running continuous duty cycles demand bearings that maintain oil film stability under sustained thermal loads.

Whether your fleet operates across African mining corridors, Southeast Asian construction sites, or Middle Eastern logistics routes, this bearing set is built to endure the conditions your engines face daily.

OEM/ODM Capability

METTLEAD Truck Parts understands that aftermarket distributors and fleet operators have unique branding and specification requirements. Our OEM/ODM services for the Main Bearing Set C06AL-4W5738 include:

• White-label packaging — Receive bearing sets in unbranded, professional packaging ready for your own label application.
• Custom branded packaging — We print your company logo, part numbers, and branding directly on boxes and protective sleeves for a seamless brand experience.
• Size and tolerance customization — Need undersize bearings (-0.25 or -0.50) for reground crankshafts? We supply the exact specification your rebuild shop requires.
• Strict quality control — Every batch undergoes dimensional inspection, surface finish verification, and material composition checks before shipment. Inspection reports are available upon request.
• Factory visit welcome — Procurement teams are invited to inspect our quality processes, warehousing, and packaging lines in person.

Explore our full range of SHANGCHAI engine parts to consolidate your sourcing under one reliable supplier.

Frequently Asked Questions — Main Bearing Set C06AL-4W5738

What engines does the Main Bearing Set C06AL-4W5738 fit?

This bearing set is designed for SHANGCHAI SC series diesel engines, including the SC9D, SC8D, and SC7H families. It matches the OEM crankshaft journal dimensions specified under part number C06AL-4W5738. Always confirm your engine serial number with our team to verify exact compatibility.

Is this main bearing set available in undersize options?

Yes. The C06AL-4W5738 main bearing set is available in standard (STD), -0.25 mm, and -0.50 mm undersizes to accommodate crankshafts that have been reground during engine overhaul. Specify your required size when submitting your inquiry.

What material is used in this bearing set, and how does it affect durability?

The bearing shells feature a tri-metal construction: a rigid steel back provides structural support, a copper-lead alloy intermediate layer handles load distribution and heat dissipation, and a soft tin-aluminum overlay provides conformability and embeddability. This layered design resists fatigue cracking for extended service intervals — typically 200,000+ km under normal operating conditions with proper lubrication.

How should I store the Main Bearing Set C06AL-4W5738 before installation?

Keep the bearing set in its original sealed packaging, stored in a dry environment away from moisture, dust, and corrosive chemicals. Avoid stacking heavy items on top of the packaging to prevent deformation of the bearing shells. Proper storage preserves the precision surface finish critical for oil film formation.

What oil clearance should I target during installation?

The recommended assembled oil clearance for the C06AL-4W5738 main bearing set is 0.04–0.08 mm. Use Plastigage or a precision micrometer to verify clearance during assembly. Clearances outside this range can lead to either oil starvation (too tight) or excessive oil consumption and bearing knock (too loose).

Can I order a sample before committing to bulk quantities?

Absolutely. METTLEAD supports sample orders so your engineering team can verify fitment, finish quality, and dimensional accuracy before scaling up. Sample lead times are typically 3–5 working days.

Ready to Secure Your Supply of Main Bearing Set C06AL-4W5738?

Your engines deserve bearings that perform as hard as they do. Whether you need 10 sets or 10,000, METTLEAD Truck Parts delivers factory-direct quality, competitive pricing, and the responsive communication your procurement timeline demands.

Get your quote today — share your required quantity, preferred bearing size (STD / undersize), and delivery destination. Our team typically responds within 12 hours with pricing and lead time confirmation.

Contact us now to request a quotation and experience what reliable sourcing feels like.

Meta Description

Main Bearing Set C06AL-4W5738 for SHANGCHAI engines — OEM-spec tri-metal construction, factory-direct pricing, STD and undersize options. Request a quote from METTLEAD Truck Parts today.