Main Journal Bearings: Standard & Undersize

RA Power Solutions is a leading engineering company providing onsite machining and grinding of the crankshaft of diesel engines, compressors, pumps, etc.

The requirement of undersize bearings in the case of auxiliary engines and marine engines after grinding is obvious, it is experienced that the crankpin & main journal bearings of popular make of engines are not available ready in stock most of the time from the Engine manufacturer.

RA Power Solutions maintains the stock of standard/ undersize crankpin bearings and main journal bearings for the reputed make & model of engines like B&W, Daihatsu, Deutz, MAK, MAN, Yanmar, Sulzer, Compressor, CKD Skoda and Allen, etc.

We are giving below a sample list of the bearings of the crankpin and main journal which are available with us in stock. A complete list of crankpin and main journal bearings available with us can be shared on request.

Crankpin Bearing of Yanmar
Crankpin Bearing of Yanmar
Main Journral Bearing Daihatsu
Main Journral Bearing Daihatsu
Sr. NoDescriptionQty
1MAN CME 5L 16/24 Standard Crankpin Diameter- 130 mm
a) 0.5 mm Undersized Crankpin Bearing8 pairs
b) 1.0 mm Undersized Crankpin Bearing8 pairs
c) 1.5 mm Undersized Crankpin Bearing8 pairs
d) 2.0 mm Undersized Crankpin Bearing8 pairs
e) 2.5 mm Undersized Crankpin Bearing8 pairs
f) Main Journal Bearings8 pairs
2Daihatsu 5DK20 Standard Crankpin Diameter-170 mm
a) 0.5 mm Undersized Crankpin Bearing8 pairs
b) 1.0 mm Undersized Crankpin Bearing8 pairs
c) 1.5 mm Undersized Crankpin Bearing8 pairs
d) 2.0 mm Undersized Crankpin Bearing8 pairs
e) 2.5 mm undersize Crankpin Bearing16 pairs
f) Main Journal Bearings8 pairs
3Daihatsu 5DC17 Standard Crankpin Diameter-145 mm
a) 0.5 mm Undersized Crankpin Bearing14 pairs
b) 1.0 mm Undersized Crankpin Bearing8 pairs
c) 1.5 mm Undersized Crankpin Bearing8 pairs
d) 2.0 mm Undersized Crankpin Bearing8 pairs
e) 2.5 mm Undersized Crankpin Bearing8 pairs
f) 3.0 mm Undersized Crankpin Bearing8 pairs
g) Main Journal Bearings8 pairs
4Yanmar Engine 6N18AL-DN/DV Standard Crankpin Diameter-145 mm
a) 0.40 mm Undersized Crankpin Bearing14 pairs
b) 0.80 mm Undersized Crankpin Bearing8 pairs
c) 1.60 mm Undersized Crankpin Bearing8 pairs
d) 2.0 mm undersized Crankpin Bearing8 pairs
e) 1.20 mm undersized Crankpin Bearing8 pairs
5Yanmar Engine –S 185 L Standard Crankpin Diameter-140 mm
a) 0.8 mm Undersized Crankpin Bearing8 pairs
b) 1.2 mm Undersized Crankpin Bearing8 pairs
c) 1.60 mm Undersized Crankpin Bearing8 pairs
d) 2.0 mm Undersized Crankpin Bearing8 pairs
6MAN 9ASL 25/30 Standard Crankpin diameter-195 mm
a) 2.5 mm Undersized Crankpin Bearing8 pairs
b) 3.0 mm Undersized Crankpin Bearing8 pairs
c) 4.0 mm Undersized Crankpin Bearing6 pairs
7Allen Engine PVBCS12 F Standard Crankpin diameter – 190.40 mm
a) 0.5 mm Undersized Crankpin Bearing8 pairs
b) 1.0 mm Undersized Crankpin Bearing8 pairs
8Gas Engine Deutz MWM TBG32V16 Standard Crankpin diameter 204.50 mm
a) 0.5 mm Undersized Crankpin Bearing8 pairs
9Daihatsu Model 8DKM28 Standard Crankpin diameter-235 mm
a) 0.5 mm Undersized Crankpin Bearing8 pairs
b) 1.0 mm Undersized Crankpin Bearing8 pairs
c) 1.5 mm Undersized Crankpin Bearing8 pairs
d) 2.0 mm Undersized Crankpin Bearing8 pairs
e) 2.5 mm Undersized Crankpin Bearing8 pairs
f) Standard size Bearing8 pairs
10Daihatsu Model 6DL-16 Standard Crankpin diameter-120 mm
a) 2.0 mm Undersized Crankpin Bearing8 pairs
b) 2.5 mm Undersized Crankpin Bearing8 pairs
c) 3.0 mm Undersized Crankpin Bearing8 pairs
11MAK MODEL 8M20 Standard Crankpin diameter-152 mm
a) 2.0 mm Undersized Crankpin Bearing8 pairs
b) 2.5 mm Undersized Crankpin Bearing8 pairs
c) 3.0 mm Undersized Crankpin Bearing4 pairs
12MAN 6L 23/30H Standard Crankpin diameter-185 mm
a) 1.5 mm Undersized Crankpin Bearing8 pairs
b) 2.0 mm Undersized Crankpin Bearing8 pairs
c) 2.5 mm Undersized Crankpin Bearing8 pairs
13CKD Skoda 638A6S 2270 KVA Standard Crankpin diameter 280 mm
a) 0.5 mm Undersized Crankpin Bearing12 pairs
b) 1.0 mm Undersized Crankpin Bearing12 pairs
c) 1.5 mm Undersized Crankpin Bearing12 pairs
d) 2.0 mm undersized Crankpin Bearing12 pairs
14Cummins Model QSV 91G8 pairs
15Ariel Compressor JGH/4 stroke 4.5 inch
a) 0.5 mm Undersized Crankpin Bearing8 pairs
b) 1.0 mm Undersized Crankpin Bearing8 pairs
c) 1.5 mm Undersized Crankpin Bearing8 pairs
16Ariel Compressor JGH/4 stroke 4.5-inch Main Journal
a) standard size Main Journal Bearing 8 pairs
MAK Engine Bearing
MAK Engine Bearing
Tri- Metal Bearing
Tri-Metal Bearing

We export Trimetal engine bearings and Babbitt white metal bearings in countries like Iraq, Iran, Dubai, Oman, Saudi Arabia, Qatar, Abu Dhabi, Sharjah, Ajman, Umm Al-Quwain, Fujairah, Bahrain, Kuwait, Antigua and Barbuda, Belize, Dominica, Dominican Republic, Malaysia, Indonesia, Madagascar, Vietnam, Grenada, Guyana, Haiti, Jamaica, Saint Kitts and Nevis, Saint Lucia, South Korea, Saint Vincent, and the Grenadines, Trinidad, and Tobago, etc.

Engine Bearing
Engine Bearing
Bearings of Yanmar Engine
Bearings of Yanmar Engine
Bearing for High Capacity Engine
Bearing for High Capacity Engine
Tri Metal Bearing for Crank Pin and Main Journal
Tri-Metal Bearing for Crank Pin and Main Journal

Bearing Manufacturer: RA Power Solutions

Discover precision and quality with RA Power Solutions – Your trusted bearing manufacturer! Elevate your machinery’s performance with our top-notch bearings. From custom designs to off-the-shelf solutions, we offer a comprehensive range to meet your specific needs. Boost productivity, reduce downtime, and enhance reliability. Explore our bearings today!

For more information on engine bearing manufacturers, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Special Size Engine Bearings | Undersize Marine Engine Bearings

Crankpin and Main Journal Engine Bearings

RA Power Solutions undertakes onsite repair of the crankshaft of main and auxiliary engines installed on vessels and high-capacity engines used for various applications. The crankshaft repair is undertaken by the use of specially designed portable, compact, and lightweight onsite crankshaft grinding machines which are designed, developed, and manufactured by RA Power Solutions.

It is obvious that after grinding of crankpin and main journal of the crankshaft there is a requirement for undersize bearings. It is generally observed that the undersize bearing for the crank pin and main journal of engines are not readily available to the manufacturers of Engines and their agents. RA Power Solutions maintains a large stock of undersize bearings for crankpins and the main journal of the main engine and auxiliary engines of all popular makes and models that are installed on the vessel.

Crankpin Bearings of Yanmar Diesel Engine Model No. 6N18L-DN
Crankpin Bearings of Yanmar Diesel Engine Model No. 6N18L-DN

The bearings are imported from Japan and Europe. The ready availability of bearings reduces the downtime of the engine. All the main journal and crankpin bearings supplied by RA Power Solutions are guaranteed satisfactory performance for 2500 hrs of operation or 12 months from the date of dispatch.

We maintain the stock of bearings for the following engines:

Wartsila , Daihatsu , MWM , Caterpillar , MaN , MaK , B&W , Sulzer , Bergen , Detroit Diesel , Stork Werkspoor , Pielstick , Deutz , Yanmar , MTU , Cummins , Nohab Polar , Caterpillar , Mitsubishi , Yanmar , MaK 551 , MaK 552 , MaK 453 , MaK 451 AK , MaK 452 AK , Deutz 540 , Deutz 358 , Deutz 350, Pielstick PC 2.2 PC 2.5, Wartsila 524 ,Wartsila 824 TS, Sulzer 6 AL 25/30, Sulzer 5 AL 25/30 MWM TBD 484, MaN 40/54 , MaN Sulzer 12 ASV 25/30 , Sulzer 16 ZV 40/48 , Deutz BV 16M 540 , B&W 6L 45 GFCA, MAN B&W 55/GF, CAT D353, B&W 5T23LH, Daihatsu 6 PST 26D, Daihatsu 6 PSHTb 26M, Mak 6MU 451 AK, Deutz 6M 628, Caterpillar 3512, Deutz BV 12M 628, MWM TBD 234, WICHMANN 5AX, SKL 8NVD 48A-2U, Pielstick PC 2.2 LNR, Caterpillar 3508 and more.

Manufacturing of White Metal Bearings
Manufacturing of White Metal Bearings

As a repairer of crankshafts having experience of more than forty years in this field, we have come across a situation where the crank pin or main journal diameter is to be reduced more than the last limits specified by the manufacturer. In this situation, the user has no option but to reject the crankshaft and purchase the new crankshaft, the cost of which is exorbitant and the procurement period is long.

Yanmar Diesel Engine Bearing having Diameter of 145 mm
Yanmar Diesel Engine Bearing has a Diameter of 145 mm
Undersize Bearings of Yanmar Diesel Engine Model No. 6N18L-DN
Undersize Bearings of Yanmar Diesel Engine Model No. 6N18L-DN

RA Power Solutions can manufacture and supply bearings of sizes that are beyond the manufacturer’s last undersize recommended in the maintenance manual. The supply of these special-size bearings like bearings for the Yanmar engine helps to save the crankshaft from rejection.

The grinding of the crankshaft, supply of special-size bearings, and commissioning of the engine are done under the same roof by RA Power Solutions and all the jobs are executed with guaranteed satisfactory performance.

For more information regarding bearings for the Yanmar engine, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

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