Cracked Gear Wheel of the BWF400 Bentonite Pump

Function of the Gear Wheel

In bentonite pumps BWF400, gear wheels are part of the gearbox and are responsible for transmitting torque from the drive motor to the plunger mechanism. Precise meshing ensures synchronized pump operation, stable drilling fluid delivery, and optimal pressure. Any defect in the gear wheels directly affects the performance and service life of the entire unit.

Why Cracks Appear

• Prolonged operation under maximum loads and vibrations.
• Ingress of abrasive particles or foreign objects into the gearbox.
• Improper lubrication or use of unsuitable oil.
• Fatigue failure of the metal under repeated load cycles.
• Improper assembly or shaft misalignment.

Gear Wheel Replacement Process

Replacing a gear wheel in a BWF400 pump requires the following steps:

1. Shut down the pump, disconnect the power, and drain the oil from the gearbox.
2. Remove the gearbox cover, lock the shaft, and carefully dismantle the damaged gear wheel.
3. Inspect the condition of associated components: bearings, shaft, and paired gears.
4. Install the new gear wheel, checking correct meshing and alignment.
5. Fill the gearbox with fresh oil of the recommended viscosity and restore housing tightness.
6. Run idle tests to check for noise and vibration levels.

 

Important Considerations

• Always use original or quality-approved gears — pump service life depends on it.
• It is advisable to replace gear pairs together to avoid uneven wear.
• Regularly monitor oil level and cleanliness, and schedule preventive gearbox maintenance.

Conclusion

A cracked gear wheel in the BWF400 pump is a serious malfunction that must not be ignored. Proper replacement and the use of high-quality spare parts will ensure long and reliable operation of the bentonite pump.