1. Motor oil leakage

(1) Oil leakage at the output shaft end: because the oil seal and the output shaft are in constant friction during normal use of the motor, the loss of the contact surface between the oil seal and the shaft will inevitably occur. If the corresponding degree is exceeded, the oil seal will lose its sealing effect, resulting in oil leakage.. Solution: Replace the oil seal. If the loss of the output shaft is serious, replace the output shaft together.

(2) Oil leakage in motor seam: the "O" ring between the motor housing and the front side plate, or between the front side plate and the stator body, or between the stator body and the rear side plate is aging or crushed. If this happens, just replace the "O" ring.

(3) Leakage at the cover: the "O" ring under the cover is pressed or aged and loses its sealing effect. The probability of this situation is very low. If it happens, just replace the "O" ring.

2. The motor runs weakly

(1) Loss between the output shaft and the housing: the primary factor causing the system failure is that the hydraulic transmission oil is impure and contains impurities and residues, which causes concave grooves in the housing, which causes the expansion of the internal leakage of the motor, and then causes the motor to be weak. The solution is to replace the housing or the whole pair.

(2) The stator body is too loose: because the motor is running, all parts of Madane are under the condition of friction with each other. If the hydraulic transmission oil in the system is too poor, the loss of parts in the motor will be accelerated. When the needle column loss in the stator body exceeds the corresponding level, the gap in the stator body pair may increase, and the conventional oil sealing effect cannot be achieved, which will cause excessive internal leakage of the motor. It shows that the motor operates normally without load, but the sound will be slightly larger than that of the conventional motor, and it will be weak or slow under load. The solution is to replace the needle column.

3. Large external leakage of motor

(1) The gap in the matching plane of the stator body is too large: the gap in the plane of the stator body of the BMR series motor should be approximately controlled within the range of 0.03 mm - 0.04 mm (slightly different depending on the displacement). If the gap exceeds 0.04, it may be detected that the leakage of the motor is significantly enlarged, which will also affect the output torque of the motor. In addition, because ordinary users always plug the external oil leakage port when using BMR series motors, when the external leakage pressure exceeds 1MPa, it may cause huge pressure on the seal and then cause oil leakage of the seal. Solution: Grind the plane of the stator body so that the matching gap between it and the cycloid wheel is controlled within the standard range.

(2) The fastening screw is not tightened: if the fastening screw is not tightened, the plane of the parts can not be normally cut in, and there are corresponding gaps, which will lead to large leakage of the motor. The solution is to tighten the screws within the required torque range.

(3) The "O" ring with too large diameter is used: the "O" ring with too large diameter may not fit the plane of the parts regularly, and there is a relatively large gap, causing the motor leakage to expand. This kind of situation is very rare. The solution is to replace the "O" ring that meets the specification.

(4) The matching gap between the output uranium and the housing is too large: when the matching gap between the output shaft and the housing is too large as specified in the standard, it may be detected that the leakage of the motor is significantly increased (more obvious than what is said in factor 1). Solution: Replace the new output shaft and pair it with the housing.

4. The motor does not rotate or crawls

(1) Matching plane of stator body

The matching clearance is too small: as mentioned before, the plane clearance of the stator body of the BMR series motor should be approximately controlled within the range of 0.03 mm - 0.04 mm. At this time, if the clearance is less than 0.03, it is possible to have the cycloid wheel bite the front side plate or the rear side plate. At this time, it can be seen that the motor operation is not balanced or is stuck, If the condition is serious, the motor will directly bite and stop rotating. Solution: Grind the plane of the cycloid wheel to control the plane clearance between it and the stator body within the standard range.

(2) The tightening screw is too tight: the tightening screw is too tight, which will cause the plane of the parts to be too tight, so that the motor will not run smoothly or will be directly stuck. The solution is to tighten the screws within the required torque range.

(3) The output shaft and the housing are damaged by each other: when the matching gap between the output shaft and the housing is too small, the motor may bite or crawl. This can also happen when there are impurities and residues in the hydraulic oil. The only solution is to replace the matching between the output shaft and the housing.