The crankpin bearing, also known as the rod bearing journal, is essential for attaching the crankshaft to the connecting rod and ensuring smooth rotation under large loads. Top-quality crankpin bearings are used in powerful diesel engines manufactured by MAK, MAN, Yanmar, and Daihatsu to reduce friction, wear, and engine failure.
RA Power Solutions: Your Trusted Source
With over 45 years of global engineering excellence, RA Power Solutions maintains a ready stock of both standard and undersized crankpin and main journal bearings for leading engine types, including Yanmar, Daihatsu, MAK, and MAN.
Why undersized bearings matter:
- After crankshaft grinding, standard-size bearings often no longer fit.
- Ship owners can’t wait for long delivery leads—undersized bearings must be available immediately to avoid costly downtime.
Comprehensive Inventory—Models & Sizes
RA Power Solutions holds a wide range of undersize and standard bearings. A few examples include:
| Engine Make | Models & Undersize Ranges |
| Yanmar | S185L: 0.80–2.00 mm 6N18AL-DN/DV: 0.40–2.80 mm |
| Daihatsu | 6DL-16: 2.50–4.00 mm 5DC-17: 0.50–4.00 mm 5DK-20: up to 5.00 mm 8DKM-28: 0.50–4.00 mm |
| MAK | 8M20: 1.00–2.00 mm undersize |
| MAN | CME 5L 16/24: 0.50–2.50 mm 6L 23/30 H: select step undersizes 9ASL 25/30: 2.50–4.00 mm undersize |
On Site Support—Speed & Precision
- Technicians often carry undersized bearings directly on site, enabling immediate installation after crankshaft grinding—minimizing engine downtime.
- Depending on location, bearings can also be dispatched by courier for urgent repairs.
- All bearings meet strict international quality standards, and RA Power can even manufacture custom sizes if beyond standard specifications.
Why Choose RA Power Solutions for Crankpin Bearings?
- Extensive availability of both standard and undersized bearings across top engine makes.
- Immediate solution: Technicians can fit bearings onsite right after grinding.
- Customization: Tailored sizes beyond manufacturer limits when needed.
- Global logistics: Fast courier dispatch ensures timely delivery globally.
- Quality assurance: Meets strict manufacturing and performance standards.
Need Bearings for MAK, MAN, Yanmar, or Daihatsu Engines?
Contact RA Power Solutions today for reliable, high-precision crankpin bearings:
Email: rajshahani@rapowersolutions.com or info@rapowersolutions.com
Phone: +91-9582647131 / +91-9810012383
FAQs:
Crankpin bearing supports the crankshaft and enables smooth rotation under heavy loads.
They usually fail due to poor lubrication, contamination, or misalignment.
Yes, undersize bearings are available after crankshaft grinding.
Engines like MAK, MAN, Yanmar, and Daihatsu rely on crankpin bearings.
Yes, experienced engineers can replace crankpin bearings directly onboard.