Crane Actual Lifting Speed Calculator

The crane actual lifting speed calculator verifies whether the designed speed meets the rated value to assess design rationality. It also calculates the required gear ratio of the hoist reducer, checks motor selection, and verifies the matching of drums and steel ropes. A reasonable lifting speed reduces fatigue stress on structural components and extends service life. Meanwhile, the crane actual lifting speed calculator helps select optimal motors and transmission solutions, cutting long-term operating costs while ensuring safety and working efficiency.

Crane Rotational Speed n (rpm)

Drum Diameter D (m)

Wire Rope Diameter d (mm)

Reducer Gear Ratio I’

Wire Rope Ratio a

— m/min

Crane Actual Lifting Speed Calculator Formula

起重机起升速度公式

V = nπ ( D +

1000

) / (I’a)

V: Crane actual lifting speed (unit: m/min)
n: Crane rotational speed (unit: rpm)
D: Drum diameter (unit: m)
d: Wire rope diameter (unit: mm)
I’: Reducer gear ratio
a: Wire rope rate
v: Rated lifting speed (unit: m/min)

Notes

When calculating the motor speed ratio, both single-drum and double-drum hoists are applicable.
There is a deviation between the rated lifting speed and the actual lifting speed. In the FEM system, engineering design typically controls the crane actual lifting speed within ±10%, i.e., 0.9V_n≤V_a≤1.1V_n (V_n is the rated lifting speed, V_a is the actual lifting speed).
The wire rope ratio is determined by the number of wire rope branches on the hook. However, if a double sheave system is used, the wire rope ratio is half the number of branches.

Applicable Products

Single Girder Overhead Cranes
Double Girder Overhead Cranes
Single Girder Gantry Cranes
Double Girder Gantry Cranes

Tailored Crane Solutions Built for Your Worksite

Every crane application is unique — from working conditions to load cycles and environmental demands. Our engineers will work with you to design a safe, efficient, and budget-friendly solution that is perfectly aligned with your goals. Contact us today for a free and one-on-one consultation and custom engineering support.

Contact Details

DGCRANE is committed to providing the professional Overhead crane products and relavent service. Exported to Over 100 Countries, 5000+ Customers Choose Us, Worth to be Trusted.

sales@dgcrane.com

+86 373 387 6188

+86 189 3735 0200

Floor 30,Gongyuan INT'I Building, Jinsui Road, Xinxiang City, Henan Province, China

Get In Touch

Fill out your details and someone from our sales team will get back to you within 24 hours!