In high-speed industrial pumps, maintaining a constant microscopic gap without contact between metal components is a core challenge in mechanical design. Bonve’s fourth-generation cam-type twin rotor pump achieves breakthroughs through micrometer-level balance.

Multidimensional Manufacturing: Foundation of Gap Control

· Machining Precision: Rotors and pump bodies are processed by five-axis CNC machine tools, with surface roughness controlled within Ra0.4μm and geometric accuracy errors ≤5μm.

（The pump body of Bonve rotary pump undergoes precision machining）

· Measurement Accuracy: Multi-angle inspections between rotors and stators, along with three-coordinate measurements of pump bodies and rotors, ensure uniform and constant assembly gaps.

· Testing Protocol: Complete pumps undergo 120-minute performance tests covering customized client requirements, with delivery only after confirming zero abnormal noise.

（The Bonve rotary pump undergoes coordinate measuring machine (CMM) inspection）

Dynamic Gap Maintenance

When synchronous gears drive the twin rotors in counter-rotation, the medium forms a fluid barrier in the narrow gaps:

· Fluid Suspension Effect: Rotational dynamic pressure generates a wedge-shaped lubrication layer, acting as an invisible cushion to separate metal components;

· Thermal Deformation Adaptation: Differential thermal expansion coefficients of materials cause gaps to automatically contract at high temperatures, compensating for vibration offset;

Zero-Contact Transmission: Precisely calculated gap sizes eliminate metal friction, transmitting energy solely via fluid pressure.

Engineering Breakthroughs

For abrasive fluid transfer, traditional pumps suffer performance degradation due to metal wear, while Bonve’s contactless design:

· Eliminates efficiency loss from component scraping

· Prevents medium alteration caused by frictional heat

· Prevents product contamination by metal debris

（The bearings of Bonve rotary pump are subjected to precision measurement）

Future Directions

1.Smart Material Applications: Temperature-responsive alloys for autonomous gap adjustment;

2.Nanoscale Surface Engineering: Further reducing boundary friction risks.

Conclusion: This micrometer-level gap control ensures rotors never touch during high-speed rotation—Bonve elevates fluid transfer technology to new heights through its philosophy of zero contact.