Marine Engine Bearings & Bushings

We provide engineering-grade Main Bearings, Connecting Rod Bearings, and Bushings for the world’s most demanding marine engines. As the primary support interface for the crankshaft and reciprocating assembly, engine bearings must handle immense combustion loads while maintaining a stable oil film.

  • Advanced Tribological Materials: Utilizing multi-layer plating technology for superior embeddability and anti-seizure properties under heavy loads.
  • Precision Geometry: Machined to exact OEM clearances to ensure consistent hydrodynamic lubrication and prevent crankshaft wear.

Product Description

Our inventory features high-performance bimetal and trimetal bearings (steel-backed with aluminum-tin or copper-lead alloys) designed to resist cavitation, corrosion, and fatigue. Whether for a massive 2-stroke propulsion plant or a high-speed auxiliary generator, Sourcing Marine delivers the precision components necessary for smooth rotation and long-term mechanical reliability.

Technical Inventory & Component Support

1. Bearings for 2-Stroke Main Engines

We supply the critical load-bearing components for massive crosshead engines, ensuring structural integrity at the heart of the vessel.

Available Components: Main Bearings, Connecting Rod (Big-End) Bearings, Crosshead Bearing Shells, and Thrust Pads.

Supported Series:

  • MAN B&W: * ME/ME-C/ME-B: G95ME-C to S30ME-C (Full series coverage).
    • MC/MC-C: S90MC-C to S35MC-C, K98MC-C, K90MC-C, K80MC-C.
    • Legacy Support: L90MC to L35MC, L90/80/67/55/45 GF(CA), and GBE series.
  • WARTSILA-SULZER:
    • RT-flex: 96, 82, 68, 60C, 58T, 50, 48T.
    • RTA: RTA84T-B, 68T-B, 58T-B, 48T-B, RTA96C, RTA84, RTA72U, RTA62, RTA52, RTA48, RTA38.
    • Legacy Support: RLA90, RLB76, RLA56, RND90M, RND76, RND68.
  • MITSUBISHI:
    • UEC Models: UEC60LSII, UEC50LSII, UEC43LSII, UEC37LSII, UEC-LS, LA, HA, and H-series.

2. Bearings for 4-Stroke Auxiliary & Medium-Speed Engines

High-durability bearing sets for generator sets and medium-speed propulsion units.

Available Components: Main Bearing Shells, Thrust Bearings, Piston Pin Bushings, Connecting Rod Bearings, Camshaft Bushings, and Camshaft Thrust Bearings.

Supported Series:

  • MAN B&W: L32/40, V32/40, L28/32, L27/38, L23/30H, L21/31, L16/24, L20/27, T23LH.
  • WARTSILA-SULZER: W4L20, L20, R22HF-D, R22/26, R32, L46, S20, ALT25/30, AL25/30.
  • YANMAR (Japan): EY28, EY26, EY21, EY18, N330, N260, N21, N18, N165, M200, T240, Z280, S185, KDL/KL series.
  • DAIHATSU (Japan): DK-36 to DK-20, DC-17, DE-18, DL-32 to DL-19, DS-32 to DS-16, PS-series (PKTB/PS-20/22/26/30).
  • MAK & PIELSTICK: M32C, M25, M20, M601AK, M552AK; PC2-5, PC2-6, PC4-2.

Why Source Bearings from Sourcing Marine?

  1. Undersize Availability: We stock standard (STD) and various undersize bearings to match re-ground crankshaft journals.
  2. Quality Verification: Every bearing shell is inspected for thickness uniformity and surface finish to prevent localized hot spots.

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