big end bearing BrE
rod bearing AmE

Failure of big end bearings in No 2 and 5 pistons.

The connecting rod had failed due to the failure of the big end bearing studs.

There are three common configurations of big end bearing:

Big end bearings seizing up will sometimes lead to a connecting rod breaking and poking out through the crankcase.

A-2 piston and con rod assembly were first removed to gain access to the big end bearing block of B-2 cylinder.

Plain bearings were used for the big end bearings and the centre main bearings.

Internal oilway, with feed from both ends, used to distribute lubricants to main and big end bearings.

A revised block and improved big end bearings were introduced in 1988, and a re-designed breather system in 1989.

If a crankpin serves more than one cylinder, then the corresponding cylinders may have an offset, to simplify the design of the big end bearing.

The big end bearings were also found to be prone to early failure, and it was reported gold plating had to be used to lengthen their life.

In 1925, a 500 cc version with linked front and rear brakes appeared, and the big end bearings were now fed oil through the crankshaft pin.

The bearing must also remain horizontal and stable, so although suitable for crankshaft main bearings, they could not be used on connecting rod big end bearings.

Big end bearings are commonly bushings or plain bearings, but less commonly may be roller bearings, see crankshaft.

The big end of the rod is fabricated as a unit and cut or cracked in two to establish precision fit around the big end bearing shell.

The big end bearings were lubricated by jets from an oil gallery in the crankcase, the oil striking the crankshaft webs which were drilled accordingly.

The engine crankshaft had broken between the big end bearing of the 6th cylinder and the main bearing in the engine casing at the flywheel end.

The crank pins are not normally called journals although they form the centre shafts of the big end bearings and are therefore journals in the more general sense.

All Lister single cylinder air cooled units have a 'running' compression ratio of about 15-16:1 to keep stresses on the piston, big end bearing, and connecting rod within reason.

In more modern practice, the crankshaft and connecting rod big end bearings in a modern automobile engine are made of a replaceable steel shell, keyed to the bearing caps.

This layout had previously caused unreliability with the Rolls-Royce Vulture due to the need to fasten four connecting rods in a complicated arrangement to a common big end bearing.

In a reciprocating engine, the crankpins, also known as crank journals are the journals of the big end bearings, at the ends of the connecting rods opposite to the pistons.

Now at last a brazen middle-aged hussy I inveigled my way right into the engine room, sweating with delight as I sketched shining brass, ratcheted levers and big end bearings.

Soon after being placed in service, however, problems were experienced with connecting rods failing, big end bearings breaking up as well as cracks developing in the motion girder of the Alligator crossheads.

An unusual accident at high speed was caused by the failure of a connecting rod big end bearing bolt, leading to a piston coming loose through the cylinder cover, through the engine room hatches and being lost overboard.

It was named by the Southern Party of the New Zealand Geological Survey Antarctic Expedition, 1963-64, because one of the party's motor toboggans was abandoned here with a smashed big end bearing.

The connecting rod bearing journals are offset 22 to one another.

Another use was aircraft master rod bearings and other types of bearings.

A separate oil injection point is also provided for the main bearing(s) and big end rod bearings of the crankshaft.

Rod bearings were made of babbitt cast integral with the rod.

This requires the rod bearings to be narrower, increasing bearing load and the risk of failure in a high-performance engine.

The 400 is the only engine that uses a 2.65" main bearing journal and a 2.10" rod bearing journal.

Instead, oil is mixed in with the fuel, and the mixture provides lubrication for the cylinder walls, crankshaft and connecting rod bearings.

After an intensive investigation, the probable cause of the crash was cited to be failure of the rear master rod bearing on the number three engine.

To accommodate the offset cylinder placement and narrow "Vee" design, the connecting rod bearing journals are offset 22 to each other.

Like the Pontiac Straight-8 engine it also featured full-pressure oiling and insert type precision main and rod bearings.

The main bearings were 2.9 in (74 mm), while the rod bearings were huge at 2.6 in (66 mm).

To increase reliability, the crankshaft incorporated larger diameter connecting rod bearings which called for modifications to the connecting rods and gudgeon pins.

The cast crankshaft uses a different block, different main and connecting rod bearings and different connecting rods.

Also like the small block V8 engines, the 200 cid V6 used 2.45-inch main bearings and 2.10-inch rod bearing diameters.

It consists of a hexagonal iron rod inch in diameter and inch short of a yard, encased within a silver rod bearing the hallmark 1445.

Also unlike the Chevrolet inline 6, Ford products used high oil pressure for lubrication for the main and rod bearings, as do all modern vehicle combustion engines.

The Generation III 5.7 L shares little other than similar displacement, external dimensions, and rod bearings, with its predecessor (LT1).

The oil is then squirted into the crankshaft and connecting rod bearings and onto the cylinder walls, and eventually drips off into the bottom of the crankcase.

Rod bearing forms gave rise to the Troedsonnellidae with early members, Buttsoceras and Tajaroceras found in the upper Cassinian.

On a recent day, one student cut ash for a woody's side panel, another checked a connecting rod bearing while a third worked with paints and lacquers that looked original but met modern environmental regulations.

From these holes in the main journals, the oil moves through passageways inside the crankshaft to exit holes in the rod journals to lubricate the rod bearings and connecting rods.

Main crankshaft bearings and the connecting rod bearing on the crankshaft generally had a grease cup which was a small container (cup) filled with grease and a cover which screwed down on the cup.

Apart from delivering significantly less than the designed power, the Vulture suffered from frequent failures of the big end connecting rod bearings, which was found to be caused by a breakdown in lubrication, and also from heat dissipation problems.

However, in modern designs, there are also passageways through the rods which carry oil from the rod bearings to the rod-piston connections and lubricate the contacting surfaces between the piston rings and interior surfaces of the cylinders.

Despite the well-documented tendency of the 2001-2002 S54 to suffer connecting rod bearing failure in the E46 M3, the M Coupe was not included in the recall to correct the issue in E46 M3s.