Running gear

Main bearings, connecting rod bearings and crankshaft parts

Bearing work is measured in microns, so the part has to be right the first time. We supply main, connecting rod, crosshead and thrust bearings, plus shims, bolts and crankshaft components.

Send your part list How sourcing works

Single unit or complete kit
OEM and verified alternatives
Certificate with shipment
Quotation in one business day

Components

What we supply

Bearing enquiries almost always come with a measurement: ovality, clearance, or a wear reading from the last survey. That is useful, because it lets us match the shell to the actual journal rather than to the drawing alone. Where a journal is undersize, we quote the matching oversize shell instead of letting you fit a standard one.

Component	Function	Supply notes
Main bearing shell	Supports the crankshaft	Thin-wall, standard or oversize
Connecting rod bearing	Big end bearing	Matched pairs, standard or oversize
Crosshead bearing	Two-stroke crosshead guide	Shell set with white metal
Thrust bearing pad	Takes axial load from the propeller	Pad set, matched to collar
Crankpin and journal	The running surfaces	New or reconditioned to size
Shims and adjustment plates	Set bearing clearance	Laser-cut to thickness
Bearing bolts and studs	Clamp the bearing housing	New, with material certificate
Deflection and wear gauges	Measure crankshaft condition	Replacement instruments

Specification

Typical range and what ships with the part

Bearing types

Thin-wall steel backed, white metal lined

Sizes

Standard and 0.25 / 0.50 / 0.75 mm oversize

Tolerance

Dimensional report with wall thickness per shell

Materials

Steel backing with AlSn, CuPb or white metal lining

Supply form

Single shell, pair or complete engine set

Lead time

Stock items 3–10 days; made to order 4–8 weeks

To quote accurately

What we need from you

1. Engine make and type
For example MAN B&W 6S50MC-C, or Wärtsilä 6L32.
2. Part number
From the manual, the invoice, or stamped on the old part.
3. Quantity and destination
One unit or a set, and the port or city for delivery.
4. A photo, if the number is gone
The worn part, the nameplate or a drawing with dimensions.

No part number? That is common on older engines. Send the bore, the overall length and a photo and we will work from that.

Questions

Before you enquire

Can you supply oversize bearings from a journal measurement?

Yes. Send the measured journal diameter and the standard diameter from the manual, and we quote the matching oversize shell. Fitting a standard shell to an undersize journal is the most common reason a new bearing fails early.

Do shells come with a wall thickness report?

Every set ships with a dimensional report showing wall thickness per shell. For a main bearing that is what tells you the clearance before you torque anything.

Do you supply complete engine sets?

Yes, and they are usually cheaper per shell than buying individually. For a full set we also check that all shells come from the same production lot, which matters for consistent clearance.

Other systems we supply

Request a quotation

Tell us what you need

One part number is enough to start. Drawings, photos and nameplate details all help us confirm the match.

What to include: engine make and type, part number (if known), quantity, and the port or city you need it delivered to. A photo of the nameplate or the worn part is often faster than a part number.

Tell us what you need

We reply by email, usually within one business day.