The efficiency of SWL10T-2A-M-40-Z is mainly related to the losses of the 'worm gear and worm pair' and 'spiral pair'. It is affected by factors such as material/manufacturing, lubrication, load/speed, temperature and installation accuracy. The comprehensive efficiency is usually about 30%-70%.
Key influencing factors
Structure and speed ratio: Type 2 (nut movement) is more conducive to long stroke and guidance; 'M' slow speed is higher than usual and has a slightly lower efficiency.
worm head count/speed ratio: the number of heads has high efficiency but the self-locking ability decreases; the large speed ratio reduces efficiency due to the increase in the number of meshing times and relative sliding.
Material and tooth surface accuracy: Bronze worm gear + hardened steel worm, combined with higher grades of tooth shape and helical angle accuracy, can reduce friction and improve efficiency.
Helical subtype: Trapezoidal/rectangular (sliding) efficiency is about 30%–70%, depending on the pitch, surface roughness and preload/backlash; rolling/ball spiral efficiency is higher but usually not standard.
Lubrication and sealing: Suitable viscosity and anti-wear/extreme pressure additives, oil pool/oil spray/oil mist method matches the speed and working conditions; poor sealing will significantly reduce the efficiency of pollution.
Load and speed: 30%-80% of the rated load, the interval efficiency is better; impact, overload and high speed (especially close to the critical speed) will significantly reduce efficiency and generate heat.
Temperature and cooling: The ambient temperature is high or continuous heavy load requires heat dissipation/cooling. The oil temperature is controlled at 80–85 ℃ and the temperature rise is ≤40 K to inhibit viscosity drop and oxidation.
Installation and centering: Center distance, axis parallelism/vertical deviation will lead to bias loading and local wear, reducing efficiency and aggravating heating.
Maintenance and pollution: Regular oil replenishment/oil change, cleaning ventilation caps and seals to maintain efficiency and delay recession.
