In the operating scenario of the SA67AM90-85.83-M1 worm reducer, what are the specific aspects of operating loss?

The operating loss of the SA67AM90-85.83-M1 worm reducer mainly includes the following aspects, and its mechanism of action is closely related to the characteristics of the worm gear transmission:

1. Mechanical friction loss

1. Tooth surface meshing friction When
the worm meshes with the worm gear, the sliding friction coefficient is usually 0.08-0.12‌1, and the friction loss accounts for 60%-70% of the total power. The equivalent friction angle (ρ) is directly related to the material combination (such as steel worm + bronze worm gear) and lubrication state.

2‌. Bearing friction loss‌ The friction loss of
the worm shaft and output shaft bearing accounts for about 15%-20%. The friction coefficient of the deep groove ball bearing is 0.001-0.003. If the lubrication is poor (such as oil temperature >80℃) or the load exceeds the rated value, the loss can increase by 30%‌.

2. Fluid power loss

1. ‌Oil stirring loss‌The energy consumption caused by the stirring
   of lubricating oil by rotating parts accounts for 5%-10%, which is proportional to the depth of the oil pool, oil volume and the square of the rotation speed. For example, when the oil level is too high, oil churning loss can increase by 20%.

2. ‌Seal friction‌The friction loss between
   the oil seal lip and the shaft accounts for about 3%-5%. If the shaft surface roughness exceeds Ra0.8μm or the seal is aged, the loss will increase significantly‌.

3. Thermodynamic loss

1. ‌Efficiency decrease caused by temperature rise‌After 4 hours
   of continuous operation, the temperature rise ΔT should be ≤45K‌4. If it exceeds this limit, the viscosity of the lubricating oil will decrease (for example, the viscosity of VG320 oil decreases by 50% at 100°C), and the friction loss will increase by 10%-15%‌.

2. ‌Heat dissipation loss‌The natural heat dissipation power on
   the shell surface accounts for about 2%-3% of the total input power. In dusty environments (such as mining conditions), the heat dissipation efficiency drops by more than 30%‌.

4. Additional losses under working conditions

1. ‌Overload and impact loss‌When the
   instantaneous torque exceeds 1.2 times the rated value, the tooth surface contact stress increases suddenly (for example, from 800MPa to 1200MPa), and the additional loss can reach 2-3 times the normal value.

2. ‌Environmental factor loss‌High
   temperature (>120℃) or low temperature (<-20℃) environment makes the lubricating oil invalid, and the friction loss increases by 25%-40%; dust intrusion causes abrasive wear, and the efficiency decreases by 5%-15%‌.