in situ crankpin grinding Archives - Connecting Rod Repair

When it comes to marine and diesel engines, we at R A Power Solutions know that accuracy and dependability are not optional; they are required. That’s why we’re happy to have a large inventory of undersized bearings and crankpin bearings in stock, available to ship right away. We make and store parts that fulfill the highest engineering standards for ships, power plants, and industrial generators.

Undersized Bearings in Stock – Ready for Dispatch

We currently stock high-quality undersized bearings for the following diesel and gas engine models:

YANMAR Diesel Engine Bearings

6N18AL-DN / DV — Diameter: 145 mm
YANMAR S185L — Diameter: 140 mm

MAN Diesel Engine Bearings

CME 5L 16/24 — Standard Diameter: 130 mm
MAN 9ASL 25/30 — Standard Diameter: 195 mm
MAN 6L 23/30 H — Standard Diameter: 185 mm

Daihatsu Diesel Engine Bearings

5DK20 — Standard Diameter: 170 mm
5DC-17 — Standard Diameter: 145 mm
6DL-16 — Standard Diameter: 120 mm
8DKM28 — Standard Diameter: 235 mm

Allen Engine Bearings

PVBCS 12 F — Standard Diameter: 190.45 mm to 190.47 mm

Gas Engine Bearings

DEUTZ MWMTBG32V16 — Diameter: 204.50 mm

MAK Diesel Engine Bearings

8M20 — Standard Diameter: 152 mm

Crankpin Bearings for Different Engine Models—Engineered by R A Power Solutions

Crankpin bearings play a crucial role in ensuring that large diesel engines operate smoothly. These bearings hold up the crankshaft journal so that it can turn under large loads and high temperatures. This is especially important in marine engines, power plants, and heavy-duty industrial generators.

High-Precision Manufacturing by R A Power Solutions

We design and supply custom crankpin bearings compatible with a wide variety of engine models and applications. With over 45 years of engineering excellence, we’ve become a globally trusted name in the reconditioning and supply of engine components. Our crankpin bearings are known for:

OEM-standard manufacturing
Precise fitting and clearances
Long service life, even in extreme conditions

crankpin bearings for different type of engines

Commitment to Quality Service

At R A Power Solutions, quality is more than just a policy—it’s our promise. Our services are designed to provide not only parts but end-to-end support:

Rigorous Quality Control
Every bearing is tested for tolerances, metallurgy, and durability before dispatch.
Technical Engineering Support
Our experienced technicians offer fitting assistance, on-site installation, and application analysis.
Global Reach & Fast Dispatch
With inventory in stock and a network of logistics partners, we deliver promptly worldwide.
Reliable Customer Support
Our team is available around the clock to assist with orders, queries, or technical guidance.

Get in Touch Today

Whether you need undersized bearings, crankpin bearings, or expert guidance on engine part replacements, R A Power Solutions is here to help.

FAQs

1. What are undersized bearings and when should they be used in marine engines?

Customers often want to understand the specific conditions under which undersized bearings are recommended over standard ones.

2. How can I determine the correct undersize for crankpin bearings after regrinding the crankshaft?

This is a practical concern for engineers and ship owners who need precise bearing dimensions after crankshaft repair.

3. Are undersized bearings as reliable and durable as standard bearings in diesel engines?

Reliability is a key concern, especially in heavy-duty marine applications where failure can be costly.

4. Can I reuse crankpin bearings after a crankshaft has been ground undersize?

Some customers look for cost-saving options and need clarity on whether reused or new undersized bearings are necessary.

5. Do you supply custom undersized crankpin bearings for specific engine models like MAK, MAN, or Wartsila?

Many users have brand-specific engines and want assurance of compatibility and availability.

When it comes to marine and diesel engines, we at R A Power Solutions know that accuracy and dependability are not optional; they are required. That’s why we’re happy to have a large inventory of undersized bearings and crankpin bearings in stock, available to ship right away. We make and store parts that fulfill the … Continue reading “Undersized Bearings & Crankpin Bearings for Marine and Diesel Engines”

The in situ crankshaft grinding and crankshaft repair machine is a unique invention and is of great assistance to the shipping companies as they can not remove the crankshaft from the vessel and send it to the workshop for repair. Again, the crankshaft grinding machines installed in the workshop are not an ideal solution due to its high cost and lack of know-how to operate. RA Power Solutions manufactures and exports onsite crankshaft grinding and repair machines having a range of 35 mm to 700 mm in terms of the diameter of crankpin and main journal of the crankshaft.

Crankshaft Grinding Machine of Bigger Diameter

Crankshaft Grinding Machine has the following features:

Onsite crankshaft grinding and polishing machine is compact, lightweight, and can be inserted from the inspection window of the engine block.
It is simple in design, easy to operate, and maintain
Crankshaft grinding and polishing machine body is manufactured out of titanium steel having the property of absorbing the vibrations. With the vibration or almost zero vibration machine can also be used for crankshaft grinding and crankshaft repair while sailing of the vessel.
- All parameters and tolerances as recommended by the engine manufacturer can be strictly maintained.
With the use of onsite crankshaft grinding and polishing machine, repair can be done in one setting. Thus saving the time.
This crankshaft grinding and polishing machine is manufactured with a pneumatic or electrical drive depending on the client’s requirement.
On Job training for the operation and maintenance of the crankshaft grinding machine is extended through our experienced technicians.
Crankshaft repair machine is supplied in a toolbox and can be transported all over the world.

**Onsite Crankshaft Grinding & Repair Machine**

We have sold more than 70 crankshaft grinding machines all over the world that includes shipping companies, leading repair workshops and power plants, etc.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in solving the major issues related to repair and overhauling of engines, grinding and repair of the crankshaft, and many more related to the high capacity engine.

For more information regarding onsite machining of crankshaft, in situ crankshaft grinding repair, crankshaft grinding machines, onsite crankshaft grinding, and crankshaft polishing equipment, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

**Repair of Crankpin by Crankshaft Grinding Machine**

**Onsite Grinding Machine for Small Diameter**

RA Power Solutions manufactures in situ crankshaft grinding and polishing machine. It is a revolutionary, lightweight, easy-to-operate, and compact crankshaft grinding and crankshaft polishing machine which can undertake the repair of crankpins up to the diameter of 700 mm without removing the crankshaft from the engine block. The in situ crankshaft grinding and crankshaft repair … Continue reading “In Situ Crankshaft Grinding Machine | Onsite Crankshaft Grinding & Polishing Machine | Crankshaft Grinder – RA Power Solutions”