How is the gear ratio of the WHX250-30 worm gear reducer calculated?

The calculation method for the reduction ratio of WHX250 gearbox is as follows:
basic formula

Reduction ratio (i)=input speed (n ₁) ÷ output speed (n ₂)
Calculation methods in practical applications
1. Calculate based on the number of worm heads (z ₁) and the number of worm gear teeth (z ₂)

WHX250 belongs to the circular arc cylindrical worm gear reducer, and its reduction ratio is determined by the number of worm heads and worm gear teeth:

i = z₂ / z₁

Number of worm heads (z ₁): usually 1, 2, 4, etc. (the more heads, the faster the speed, but the smaller the torque).

Number of worm gear teeth (z ₂): The number of worm gear teeth for WHX250 depends on the specific model and is generally between 30-80.

2. Calculate based on the motor speed and actual output speed
If the input speed of the motor (such as common 1450r/min or 960r/min) and the actual output speed of the reducer are known, the formula can be directly used:

I=motor speed/output speed

WHX250 Common Reduction Ratio Range
The standard reduction ratio of WHX250 gearbox is usually:
10. 15, 20, 25, 30, 40, 50, 60, 80

The specific reduction ratio of the model should refer to the product parameter table provided by the manufacturer.
precautions

Multi stage reduction: If the reducer contains multiple stages of transmission (such as worm and gear combination), the total reduction ratio is the product of the reduction ratios of each stage.

Efficiency impact: The larger the reduction ratio, the lower the efficiency of the gearbox may be, and power loss needs to be considered.

Selection suggestion: Choose the appropriate reduction ratio according to the load requirements to ensure that the reducer can provide sufficient torque and meet the working speed requirements.