Double Girder Overhead Crane

15t Underslung Overhead Crane

A 15 t underslung overhead crane whose end carriages run on the underside of the runway beams, rather than on rails on top. That arrangement removes the need for a raised rail level and makes it the practical choice where the roof structure cannot accept a top-running crane or where the headroom under the beams is the constraint.

Underslung cranes are used in production halls where the building is already built and the runway is part of the existing structure. The runway must be checked for the loads an underslung crane applies, and the width between the beams decides the usable span.

Confirm at order: the existing runway section and its capacity, the clear dimension between the runway beams, and the lift height available below the rail.
Also agree: duty class, hook approach at each end, control type, and the power feed arrangement along the runway.

The figures below are a catalogue baseline. Final design and component selection are confirmed before ordering.

Capacity: 15 t
Span: 20 m
Lift Height: 8 m

Work Class: M5 (catalog baseline; duty assessment required)
Power: Application-specific motor sizing — confirmed with quotation
Power Supply: 380V / 50Hz / 3-phase reference configuration; alternatives confirmed with order

mainAI-rendered illustration. Final equipment configuration confirmed with your order.

Specifications

Capacity	15 t
Span	20 m
Lift Height	8 m
Work Class	M5 (catalog baseline; duty assessment required)
Speeds	Variable-speed hoisting and travel; speeds selected for duty and confirmed with quotation
Power	Application-specific motor sizing — confirmed with quotation
Control	Pendant or radio control; selected with order
Power Supply	380V / 50Hz / 3-phase reference configuration; alternatives confirmed with order
Lifting Attachment	Single hook reference configuration
Configuration Status	Catalog baseline; final design and component selection confirmed before ordering

Standard configuration — final spec confirmed with your order.

Applications

All applications

Shipyard

FAQ

All FAQs

›When should I choose a double girder crane over a single girder?

Choose double girder when headroom is tight, lift height is large, the span is long or the duty class is heavy. It also gives you a platform for the trolley and panel. Below roughly 20 m span at light to medium duty, a single girder crane is usually the more economical machine.

›Can I fit a double girder crane into an existing building?

Yes, but the check is on the runway and the columns, not only on the crane. Send the bay drawing with column spacing, rail level and clear height, and we will confirm the span, the wheel loads and whether a walkway will fit above the load path.