Function and Type Crankshaft

Generally tolerated crankshaft plain bearings set on the crank space. Bearing crankshaft main bearings commonly called.
Dhpergunakan type crankshaft motorcycle engine are:
1 Type of built-up
Used in the type of motor that has a small amount of one or two cylinders.

2 Type "one piece"
Used on a large type of motor that has a lot number of cylinders.

For a one-cylinder motorcycle in the crank shaft (usually in front of the crank pen) placed as a counter weight balancing crank rotation when working under pressure piston. But a lot of the motor cylinder, pen mounted crank offset each other. Heavy counter weights approximately equal to the weight of the piston rod plus the weight of the whole crank. Thus the crankshaft can be balanced, so it can rotate more flat and crank vibrations into hilang.Dengan existence of this counter weight causes pressure on the bearings is reduced and evenly.
Crankshaft and the drive shaft is to changed the translational motion of the piston into rotary motion. Both parts are always suffering from stress and strain were very large. Because it must be made of special material and size tepat.Dalam standstill and rotating crankshaft always equilibrium (balance). Hardened bearing surface and shall be smooth to reduce wear.
Rotating crankshaft is supported by several major bearing fruit. The number of pads depends on the number of cylinders. Four-cylinder motors have 3 pads and six-cylinder motors have 4 main bearings. These pads are made of steel or mixed with Babbit there also with aluminum.
Drive shaft and the crankshaft is made of cast iron. Installation of shaft drive on crankshaft bearings coated with wear.