The manifestations of forklift gantry roller bearing faults include:

1. The failure of the gantry roller bearing may result in a decrease or destruction of the number of gantry rollers, which will directly affect the normal operation of the forklift. This phenomenon may affect the balance and stability of the forklift gantry, leading to the inability of the forklift to lift smoothly and the stability and safety of cargo transmission. It may also cause the forklift to tilt and jump during lifting, thereby affecting the operational efficiency of the forklift.

2. If the gantry roller bearings experience play, which means that the gantry bearings are severely worn in the gantry structure, this situation may cause abnormal vibration or noise during the operation of the forklift, affecting its work efficiency and performance.

3. The failure of the gantry roller bearing may also cause the forklift to swing left and right or unable to walk stably during operation. In this case, it is necessary to inspect and replace the gantry roller bearings to ensure that the forklift can operate normally.

4. The failure of the gantry roller bearing may also cause the forklift to run slower or accelerate more difficult. This situation may be caused by bearing wear leading to transmission system failure, or it may be due to inadequate lubrication, foreign object intrusion, or creep phenomenon.

5. The failure of the roller bearing of the forklift gantry may also cause the forklift to experience tire slippage or tail shaking during operation. This situation may endanger the safety of forklift drivers and surrounding personnel.

Therefore, regular inspection and maintenance of the gantry roller bearings of forklifts is crucial to ensure their normal operation and extend their service life.