What is a main bearing?

In a piston engine, the main bearings are the bearings on which the crankshaft rotates, usually plain or journal bearings. The bearings hold the crankshaft in place and prevent the forces created by the
piston and transmitted to the crankshaft by the connecting rods from dislodging the crankshaft, instead forcing the crank to convert the reciprocating movement into rotation. Most modern automotive engines have one main bearing at each end of the crankshaft and another in between each adjacent pair of connecting rod journals, but not all engines conform to this generalization. Notable exceptions include the Ford flathead V-8, which often had only three main bearings, and straight-6 engine, which had in various iterations, between 3 and 7 main bearings.

Shiyan Renman Automobile Parts Co., Ltd. was established in Shiyan city, so called automobile city in China, in 2008.  We mainly supply diesel  engines and spare parts for various trucks, buses, pickup, SUV, MPV, VAN,  marine, construction machinery, such as A2300, ISF2.8/3.8, 4BT3.9, 6BT5.9, 6CT8.3, 6L8.9, QSB6.7, ISBe, ISDe, ISLe, ISM, QSC, QSL, QSM, M11, L10, N14, NT855, KTA19/38/50.

Q:Are you a manufacturer?

A: No, we are an engine parts trading compnay, a distributor of some manufacturers.

Q:What information should be provided to get a quotation?

A:To get an accurate quotation, please let us know the exact part name, quantity, quality level and trade terms like EXW, FOB and so on.  More details provided will help.

Q:How many days will samples be finished? And how about mass production?

A: For regular models, generally we have ready samples to be sent out at the earliest time.

As for mass production, it completely depends on customers’ order quantity.

Q:Do you inspect the finished products?

A: Yes,we must make sure the goods are 100% new and quality is 100% qualified.

Q:How do you ship the finished products?

A: By sea or by air, completely based on customers’ request and order quantity. 

Why choose us?

1.Various&Flexible supply ability
We have built solid relationships with numbers of strong manufacturers, such as Dongfeng Engine, Wuxi Holset Turbo, Bosch China, etc. So we can provide a various range of auto parts.

2.High quality and competitive price
Genuine parts are with very high quality, the quality of high copy parts are good enough, and common quality for common copy parts.
For high copy parts, it's really cost effective.

3.Quality assured
Generally the parts are tested before shipment, the quality can be assured unless problems happen during transportation.

How to contact us?

Send your detailed inquiry in the belowing form.

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