Qingdao Hanlinrui Machinery Co., Ltd is committed to providing customers with high-quality, customized precision parts processing services, such as engine crankshaft. We not only serve traditional fields such as digital electronic products, automobile manufacturing, and aerospace, but also actively expand into emerging industries such as new energy equipment and medical devices. Through strict quality control systems and professional technical support, it has won wide recognition in the market.
Crankshafts have been around for hundreds of years, used in water mills and sawmills. They eventually came to prominence in paddle steamers, converting the energy of a steam-powered piston into the rotational energy of a paddle wheel.
Engine crankshaft runs inside the bottom end of the car's motor, converting the vertical motion of the pistons into horizontal rotational motion that ultimately drives the wheels through the transmission.
|
Material |
Steel or Cast Iron |
|
Length |
customized (typically 600-900 mm) |
|
Diameter |
customized (typically 30-60 mm) |
|
Weight |
customized (typically 10-50 kg) |
|
Number of Throws |
Typically 4, 6, or 8 |
|
Crankpin Diameter |
customized (typically 40-60 mm) |
|
Main Bearing Diameter |
customized (typically 50-70 mm) |
■ Flywheel Mounting Flange
The flywheel mounting flange is the point of attachment between the crankshaft and the flywheel. The flywheel flange part of the crankshaft is often larger than the other end, providing a face for mounting the flywheel.
■ Crank Pin
This part of the crankshaft facilitates a strong connection between the connecting rod and the crankshaft. Other names for this component are connecting rod journal and rod bearing journal. Crank pins always have a cylindrical surface. This surface ensures the pin flows with the rotating force found on the piston rod’s bigger end.
■ Crank Web
The crank web helps connect the main bearing journals to the crankshaft. This component of the crankshaft is of utmost importance.
■ Thrust Washers
Without thrust washers, the crankshaft would move vertically, in addition to its rotational motion. So, to prevent this, there are two or more thrust washers at strategic locations along the length of the crankshaft. There are also washers between the web’s surface and the crankshaft saddle to maintain specific clearance between the crank web and shaft.
In some cars that are equipped with a supercharger, a pulley is attached to the end of the crankshaft, which is then attached to the supercharger by a belt.
When the engine is running the crankshaft rotates rapidly, driving the pulley, which moves the belt, and then the pulley on the end of the supercharger.
This then operates the turbine in the supercharger, drawing in air and boosting the power the engine produces.
The engine crankshaft is a critical component used in various applications, primarily in vehicles and machinery.
■ What mechanism does the crankshaft work in?
The crankshaft works in a crank mechanism, which includes a series of crank pins and cranks connected to the engine through connecting rods.
■ Can a car run without a crankshaft?
Electric cars can operate without a crankshaft, as they rely on a different mechanism for movement. However, internal combustion engine vehicles cannot run without a crankshaft.
■ What types of engines work without a crankshaft?
Engines that can operate without a crankshaft include turbojet engines, rotary engines, and free-piston engines.
■ How can the lifespan of a crankshaft be extended?
One of the primary methods to extend the lifespan of a crankshaft is to change the oil regularly. Additionally, ensure that oil does not leak from the seals. Check the cylinder head gasket to make sure coolant and fuel do not mix with the oil. Lastly, avoid overheating the engine.
