Name: China Double Girder Crane End Carriage Manufacturers Suppliers Factory - Yufei Crane
Brand: Yufei
SKU: 303729705

Description

Technical Parameters

The double girder crane end carriage is the core load-bearing component of the bridge structure of a double-girder overhead crane or a double-girder gantry crane. It connects the ends of the two main girders to form an integral bridge framework, withstands the vertical loads, horizontal inertial forces and impact loads transmitted by the main girders, and simultaneously serves as the mounting base for the travel mechanism, enabling the longitudinal movement of the crane along the workshop rail.

YuFei double girder crane end carriages, made of Q235B/Q355B high-strength steel, are widely used in machinery manufacturing, metallurgy, mining, warehouses, and material yard loading, unloading and handling, among other fields.

Parameter	Technical specification
Applicable rated lifting capacity	5 t – 320 t
Applicable crane span	7.5 m – 31.5 m
Wheel diameter	160 mm, 200 mm, 250 mm, 320 mm, 400 mm, 500 mm
Number of wheels	2-wheel, 4-wheel, 8-wheel
Long travel speed	30 m/min – 100 m/min (extendable to 5 – 120 m/min with variable frequency speed control)
Duty classification	A3 – A7
Main structural material	Q235B or Q355B low-alloy high-strength structural steel
Maximum wheel load	20 kN – 100 kN (varies with lifting capacity and span)
Wheel material	ZG55 cast steel, surface hardening hardness HRC 50–55
Customizable according to customer requirements

Features of double girder crane end carriages

Compared with a single girder crane end carriage, a double girder end carriage has a larger cross-section and stronger load-bearing capacity, making it suitable for cranes with higher lifting capacities.

Compared with a European crane end carriage, a double girder end carriage features a heavy-duty box-type structure with a simple welding process, resulting in lower production costs.

Relatively low assembly precision requirements, good interchangeability of components, and convenient maintenance.

The duty classification is typically A3–A7, suitable for medium-duty and heavier working conditions.

Applications of double girder crane end carriages

Routine material lifting in machine shops, assembly shops, maintenance shops, and steel structure workshops

Auxiliary production operations in metallurgical, foundry, and chemical industries

Cargo handling and transfer in various warehouses and material yards

After windproof and rainproof structural modifications, they can be used in open-air storage yard operations

	End carriage frame : Usually adopts a box-shaped structure welded from steel plates such as upper and lower cover plates and web plates, with internal stiffening ribs to ensure rigidity and stability. It can also be fabricated from structural shapes such as rectangular steel tubes. For ease of transportation and installation, a modular design in sections is often adopted, connected by connecting plates and high-strength bolts.
	Travel mechanism: Typically adopts independent drive, i.e., each side end carriage or each wheel set is equipped with an independent "motor-reducer-brake" three-in-one drive unit to drive the driving wheels.
	Wheel set: Each end carriage set normally includes driving wheels and driven wheels, mostly with a double-flange structure to prevent derailment. The material is mostly heat-treated 45# steel, providing high hardness and wear resistance.
	Safety and protection components: Buffers are provided as standard to absorb collision energy; limit switches realize travel safety control; some are also equipped with anti-derailment protection devices.