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Gear oil loader loader oil the main reason
Gear pump shaft extension spline and gearbox output shaft Huacao effective contact length is short, while the gear pump torque transmission work larger, the spline to withstand large torque squeeze wear or rolling key, resulting in huge heat, Resulting in skeleton oil seal rubber lip burn, aging, resulting in channeling oil. It is recommended that OEMs use gear pumps to check the shaft extension spline strength to ensure sufficient effective contact length. Because the shaft diameter of the gear shaft and the clearance of the inner hole of the seal ring are small, larger solid particles in the oil enter between them, resulting in the abrasion of the inner hole of the seal ring, scratching or rotation with the shaft, causing the pressure oil of the secondary seal to enter the low pressure zone Skeleton seal), resulting in seal breakdown, this time should be filtered or replaced with new anti-wear hydraulic oil. Because the shaft diameter of the gear shaft and the clearance of the inner hole of the seal ring are small, larger solid particles in the oil enter between them, resulting in the abrasion of the inner hole of the seal ring, scratching or rotation with the shaft, causing the pressure oil of the secondary seal to enter the low pressure zone Skeleton seal), resulting in seal breakdown, this time should be filtered or replaced with new anti-wear hydraulic oil. When the host load working time is too long and the fuel tank surface is low, the oil temperature can be increased to 100 ℃, resulting in thinning oil, aging oil seal lips, resulting in channeling oil; should be checked regularly fuel tank level, Avoid excessive oil temperature. Gear pump outside the stop and variable speed pump stop and gear pump spline and gearbox spline shaft spline, the gap between the two is reasonable, all on the gear pump oil have an impact.