Lift parts warehouse has a wide variety of forklift fan belts at a low price. The best part is that we have a professional team with knowledge of forklifts and their spare parts here. They are available to help you with the correct selection of the fan belt, especially if you are a first-time buyer or forklift user. Same-day shipping and quick delivery. Buy a new forklift fan belt. Quality guaranteed at low prices.
The following technical information allows the reader to know more about the fan belt and their functioning within the cooling system of an internal combustion engine. Besides, you will find the selection criteria to acquire the correct replacement for your fan belt and some tips about the common problems presented in this device.
It consists of a rubber and flexible belt that drives the alternator, the water pump, and the cooling fan blade. It is an essential part of the forklift cooling system given this makes possible:
The fan blade rotation. It assures a reasonable rate of air entering into the radiator to low the temperature of the coolant.
The water pump works. It permits a suitable distribution of the coolant around the engine body.
Due to its multiple functions, the fan belt is also called:
Fan belt components
Body: It is made of resistant rubber. Although its shape depends on its position -given its flexibility- it is circular or oval if extended completely. The material used for its construction could be natural rubber (NR), nitrile rubber (NBR), synthetic rubber ( HNBR), etc.
Tensile Cords: These arevarious flexible lines made of nylon, fiberglass, steel wire, polyester, etc. It acts as a solid structure that makes the belt strong and stable.
Cover: This is a protective layer made of plastic. Its function is to provide endurance of the rubber body to resist the temperature increase generated by the high friction.
How a fan belt works
This drive belt is found in engines with internal combustion. Its wedge-shaped face is positioned over the fan, water pump, and alternator pulleys; it connects all these elements with the engine crankshaft.
When the engine starts running, it creates a reciprocating movement that generates a crankshaft rotation. So, the fan belt uses the force of this torque to rotate the other components by their respective pulleys.
The wedge shape of the internal fan belt face assures a more extensive surface area and good stability. This characteristic permits that:
High friction between pulleys and the belt exists to perform rotational energy transmission with a low preload force.
Less bearing load.
Fan belt types
Raw-edge Cogged (REC): This belt type has no sloping sides, and the drawstring can be seen. Given there is no fabric wrapping, the tension cords have more space to reinforce the belt. The underside Coggins reduce the bending resistance.
Raw-edge Plain (REP): It differs from the REC in its rubber profile, given the drawstring has no space and its internal face has a plain shape that is positioned over the pulleys.
Wrapped belt: Also known as smooth belts. Its fabric layer protects the belt internals and provides resistance against abrasion, contamination, and oil.
Another way to classify the fan belt could be by:
Cross-sectional size: A,B,C,D, and E.
Transmission belt power.
The below table shows the equivalence between the cross-sectional size and transmission power.
Width x Length (mm)
0.1 to 3
0.5 to 6
1 to 12
3 to 32
How to choose the correct forklift fan belt
When choosing a forklift fan belt for your cooling system, consider the following:
Type: A REC is suitable for small pulleys. A REP is commonly used in pulleys with large diameters. Generally, raw-edge belts are more expensive than the wrapped belts.
Dimensions: Measure the width and the length of the cross-section and the nominal inside length. In this way, you can determine what belt class you need ( according to table 1).
Compare type and dimensions with the tag on the belt: The code marked on the belts provides a complete specification of them. For example, a belt AX2032 means a belt type “A,” an “X” indicates a Raw-edge Cogged type. Finally, the “2032” refers to its nominal inside length.
Common problems of a fan belt
Cracking: The most common reason for this problem is the time of use. As it is an element created by rubber, it changes its properties as time goes by. The belt will look dryer, with excessive cracking, and will lose flexibility.
Glazed belt: A loss of belt tension causes a belt slipping. The constant and high friction between the belt and the pulley generates a substantial heat amount. As a result, the belt is polished until it has a glazing appearance. This problem occurs when the tensioner is defective or worn. A belt glazing does not permit a proper grip, even if it is tightened again.
Fraying: The misalignment of the pulleys causes the belt fibers to degrade and become weak. Thus, the belt comes apart at the edges. This problem is visible but also can be identified through a rubbing noise.
Contamination: The forklift fan belt is exposed to get wet or soggy by oil from the engine or coolant from the cooling system. In case this happens, the belt will suffer degradation, and its performance will be affected. A deep inspection is needed to find where the leakage is and solve the problem. Otherwise, a new belt installed will suffer the same issue.
A Forklift fan belt drives the alternator, the water pump, and the cooling fan blade.
It is also known as drive belt, serpentine belt and alternator belt.
According to its design, there are Raw-edge belts and wrapped belts.
When choosing the correct fan belt replacement, the new belt must match with the old belt parameter: type, dimensions, and nominal inside length.
Cracking, glazing, fraying and the contamination of the belt (with oil or coolant) are the common problems found.
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