Here are some advantages and disadvantages of using idler rollers on Sany excavator parts:
Advantages:
Reduce friction
Idler rollers rotate freely, which helps reduce friction between the roller and track links. This requires less energy to move the tracks and provides smoother travel.
Support weight
The idler rollers help support the weight of the excavator, especially when operating on an incline. Without the idler rollers, the tracks would sag significantly under the weight.
Improve tracking
The idler rollers help guide the tracks to keep them aligned and tracking properly around turns. If the idler rollers were fixed rather than rotating, the tracks would drag and scrub significantly around turns.
Allow slack adjustment
Many idler rollers use springs to maintain proper track tension. The springs can compensate for slight increases in track length as the rollers and links wear to avoid excess slack.
Disadvantages:
Additional cost
Idler rollers add to the overall cost of the undercarriage system. They require high-quality bearings and seals, springs, and durable materials to handle the harsh operating conditions.
Additional maintenance
Idler rollers require periodic maintenance which also adds to the operating costs. The seals and bearings need to be inspected and replaced, and the roller tires require replacement as they become worn.
Potential failures
Although idler rollers are designed to be very durable, they still can potentially fail or malfunction which would disable the excavator. A failed idler roller needs to be replaced to return the machine to operation.
Noise
The idler rollers rolling on the track links can produce additional noise during operation, especially as the rollers and links become worn. Noise-dampening materials are used to help minimize noise from the idler rollers.
Can hinder track lug contact
The idler roller tires contact the middle portion of the track links, which can slightly reduce the ground contact of the track lugs in some conditions. This may minimally impact traction.