Lubricating Abrasion Tester Fast delivery Polishing and Telling ProcedureA. Shaft Sleeve Polishing Start the motor and polish the shaft sleeve with an oilstone coated in ordinary lubricant. Press evenly with your thumb. Wipe clean and stop the motor. Purpose: remove original or nano-film that may affect results. Fix the friction block, fill the oil box with ordinary lubricant, adjust lever length, and start the motor. Add weights (100 kg each) at intervals. Observe: as weights increase —> current, power, fuel consumption, and noise increase. Stop after 3-4 weights when the wheel locks. Remove weights and check grinding marks: depth, area, roughness. Rotate the block and polish the shaft sleeve again for a flat, clean surface. Add wear-resistant lubricant. Add weights one by one. With ordinary oil, machine locks at ~4 weights; with wear-resistant oil, it runs beyond 12 weights. Observe minimal current rise —► lower power/fuel use. Remove oil box; machine continues running, showing nano-film presence. Turn off the machine. E. Wear Mark Comparison Compare new marks with previous ones. Place block horizontally, add 3 weights, heat oil to boiling, record time. Longer time indicates better oil quality. Always polish the shaft sleeve with ordinary lubricant when changing oil. Improper cleaning causes vibration, noise, and inaccurate results.