Crane Travelling Static Resistance Calculator

The crane travelling static resistance calculator estimates the force required to overcome friction and track slope for normal travel. Using rated load and crane dead weight, it checks whether motors and drives can move the crane. Results support selection of matching motors, gearboxes and wheels. The crane travelling static resistance calculator also helps assess wheel slip risk. For sloped tracks, the calculation evaluates possible crane sliding after stopping, preventing bearing damage, rail biting and installation-related issues.

Rated load, G_n (kg)

Gravity, g (N/kg)

Uphill gradient, i (‰)

Wheel construction

Crane self mass, G (kg)

Trolley self mass, G₁ (kg)

Crane wheel D_w (mm)

Crane factor, F_r

Trolley wheel D_w (mm)

Trolley factor, F_r

Crane travel static resistance, F_st,max —

Trolley travel static resistance, F_st,max —

Crane Travelling Static Resistance Calculator Formula

F_f = (G_n + G) × g × f_r

F_s = (G_n + G) × g × i

F_st,max = F_f + F_s

G_n: Crane rated load, unit: kg
G: Crane self-weight, unit: kg
G₁: Trolley self-weight, unit: kg
g: Gravity (the value is taken as 10 N/kg)
f_r: Rolling friction factor
i: Assumed slope
F_f: Frictional resistance, unit: N
Fs: Gradient resistance, unit: N
F_{st, max}: Crane travelling static resistance, unit: N

Notes

This f_r coefficient actually represents wheel rolling resistance plus wheel bearing friction, along with the additional effects associated with the wheel flange.
Typically, the wheel diameters of the crane’s travel mechanism are larger than those of the trolley travel mechanism. Therefore, this calculator allows for separate calculations based on the respective parameters.
For travelling mechanisms and electric motors, power requirements are relatively sensitive. Even a gradient of just 1‰ generates actual running resistance. Therefore, in the absence of measured data from the facility, an assumed gradient is incorporated to prevent an undersized motor.

Applicable Cranes

The products listed below are primarily suitable for use in enclosed indoor factory environments.

Single-girder Overhead Crane
Double-girder Overhead Crane
Single-girder Gantry Crane (For indoor use)
Double-girder Gantry Crane (For indoor use)
Trolley of Overhead Crane
Trolley of Gantry Crane

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!