Front shock absorber

Front shock absorbers are key components that support and steer the front wheels. They use springs and dampers to reduce vibration as the vehicle moves up and down over bumps in the road, allowing for comfortable riding and controlling steering stability and vehicle balance.

Raised pavement

When the vehicle passes over the road bulge, the front fork spring absorbs the vibration, and the damper provides assistance to the compression of the spring.

Drive over a raised road

After the vehicle passes over the bump in the road, the spring will extend back to its original length, at which time the damper will prevent the spring from recovering too quickly.

Front shock absorber construction

A complete shock absorber is mainly composed of the following parts

Front fork bottom barrel and tube: As the front fork compresses and extends, the front fork bottom barrel and tube guide the front fork and keep the hydraulic pressure in the front fork constant

Front fork springs and return springs:

The front fork springs reduce vibration from the road surface and support the load on the vehicle

The return spring reduces the vibration that occurs when the front fork is fully extended

Front fork piston: The front fork piston is installed in the bottom cylinder of the front fork, and the free valve installed in the front fork piston controls the flow of the front fork fluid to reduce the vertical movement of the vehicle

Dust and oil seals:

The oil seal prevents leakage of the front fork fluid and controls changes in pressure

Dust sealing prevents dust and moisture from the front fork pipe from entering the compartment sealed by the oil seal

Shock absorber:

The damping fluid moves back and forth between the small compartments separated by front fork pistons and other compartments to create damping forces

damper

There are some small cabins in the front shock absorber that change in volume as they compress and stretch. The damping fluid creates resistance as it moves back and forth between these compartments. This will generate damping force, which is one of the main functions of the damper mechanism.

The resistance generated by the flow of the damping fluid is controlled by the amount of damping fluid flowing out of the free valve and the opening and clearance. This resistance controls the time required for the compressed front shock to return to its normal position and assists in the compression of the spring.

Oil lock block

When the vibration of the front damper exceeds its damping capacity, the oil lock block prevents the front fork tube and the front fork bottom cylinder from colliding with each other (hitting the bottom). With the compression of the shock absorber, the oil lock block will gradually narrow the path of the shock absorber and limit the front fork when the front fork is about to hit the bottom. Some types of front damper are equipped with a free valve with the oil lock block function

Damping oil

Performance of shock absorber oil

(1) It has good anti-rust and anti-wear effect

(2) Within the scope of use (high-speed, full load, overload driving) as little as possible vaporization loss

(3) It has anti-oxidation stability and anti-oil mixing stability, that is, the so-called good working stability

(4) The freezing point shall not be lower than -40 ° C, and the oil has good low temperature fluidity

(5) The shock absorber oil must be kept absolutely clean

(6) It has good viscosity-temperature performance and high viscosity index

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