Detailed Photos
We produce all kinds of bearing sets, limit sets, widely used in agricultural machinery parts, auto parts, bearing production, construction machinery parts.
Product Description
What is the function of crankshaft bearings?
The crankshaft bearings hold the crankshaft in the block with almost no wear. Optimal lubrication prevents the crankshaft and bearing shells from touching and causing unwanted friction. Instead, the crankshaft simply slides over the oil film provided by the oil pump. The bearing shells are important for transferring the existing axial and radial forces to the bearing housings. They also embed the wear, which consists of small metal particles. This would cause high wear without the embedding as it does not get caught in the oil filter. Improved crankshaft bearings also have the function of withstanding the higher demands caused by the increase in performance. This is achieved, for example, by special coatings and improved oil bores.
Instructions: Replacing the crankshaft bearings
You can only reach the crankshaft bearings if you disassemble the engine block and the crankshaft. You usually do this to find out if there is bearing damage. If this is the case, you should change your crankshaft bearings. This is how you proceed: Step 1: First, disassemble the block. Pay attention to the markings on the bearings before you install them. Step 2: It is especially important that it is absolutely clean when you install the new bearings. Dirt can directly destroy new bearings. Therefore clean all parts. Pay attention to cracked bearing caps: Here you have to be especially careful to avoid dirt and abrasion so that everything fits afterwards. Step 3: Now measure the diameter of the base bore. You do this at three different places in order to find out if there are any ovalities. Step 4: Now the actual installation of the new Main bearing shells begins. Now clean the crankshaft's bearing race and journals again and compare the new shells with the old ones. By means of the numbering you can determine whether you have selected the correct bearings. Also, the fitting bearing and the oil hole must be in the right place. Also, upper and lower bearings may be different, or sputter layers may be used on engines that are particularly heavy-duty (main bearings usually have sputtered lower bearings). Step 5: After inserting the bearings, oil the running surfaces. Step 6: Now insert the crankshaft. Be careful not to jam it and get help if you don't have a crane or similar. Step 7: Now put the bearing caps on and tighten them. Pay attention to the markings and tighten the expansion bolts according to the manufacturer's instructions. Also check if the bolts can be reused. Step 8: After installation, check whether the crankshaft can be turned or whether it still sticks somewhere. The axial play must also be checked now. If everything is within the tolerances, you can reinstall the block.
){kind=link}
){kind=link}