YALE - FORKLIFT CAMSHAFTS AND CRANKSHAFTS

Yale forklifts camshafts and Crankshafts are made from durable materials allowing them to function for a long period of time. Camshafts and Crankshafts are essential parts of an Yale forklift engine assembly. They ensure that the energy created in the engine is transmitted to the wheels. They also are responsible for the operation of other components of the engine.

From the mechanical point of view, the crankshaft is the most demanded part of the engine, because it employs the piston and stem, forcing the pressure from the cylinder. The crankshaft is the part that takes over the forces in the rod, summing the mechanical things produced in the cylinders, and transmits the resulting energy to the wheels through the transmission.

The crankshaft also drives some auxiliary engine systems (distribution, oil pump, water pump, compressor, alternator, etc.).

The crankshaft is positioned inside the engine, fixed by the engine block, through the spindle splines.

The components that make up a crankshaft for the engine are:

• the spindles (through which the shaft rests on the engine block, in the bearings)
• the spindles (on which the balls are attached)
• arms (connect the spindles and spikes, often also contain balancing counterweights)
• the heads (one mounted on the flywheel and the other on the gear mechanism for driving the distribution)

 The flywheel ensures the regularity of the crankshaft revolution for each engine cycle. As the engine torque is not continuous, it is produced only on the rollover stroke for each cylinder, it is necessary to use a flywheel.

To reduce friction during rotation, the crankshaft is mounted on the bearings in the engine block bearings. The friction between the bearings and the crankshaft is damp, with oil under pressure, the pressure being provided by the oil pump. The oil circulates at the spindles and grooves through the channels provided in the shaft.

To balance the crankshaft during rotation, the arms may be provided with counterweights. Calibration of these counterweights is done by drilling, with different diameters and depths.

The shape of the crankshaft, or the number of spindle and spindle spindles, is conditioned by the number and position of the cylinders, the order of ignition and the dynamic equalization of the inertial forces occurring during rotation.

The crankshaft is usually made of high-grade steel or, depending on the requirements to which it is subjected, steel alloyed with chromium and nickel or with molybdenum and vanadium.

The crankshaft being a moving part needs oil lubrication on the sections in contact with other parts. Thus, spindles, flanges, and chucks are provided with holes, through which oil is circulated under pressure.

Oil lubrication circuit inside the crankshaft

• lubrication holes provided in the spindle spindle
• balancing holes provided in counterweights
• lubrication holes provided in the spindles

Crankshafts are manufactured by casting or turning on numerically controlled machines.