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Semi Goliath Crane

Double Girder Semi Goliath Crane

Hybrid crane: one end runs on an elevated gantry rail on your building column, the other on a leg travelling on a floor rail. Perfect for extending crane coverage into bays where overhead rails exist on only one side. Up to 40 Ton capacity, IS:3177 design.

Capacity	5 – 200 Ton
Span	Up to 50 m
Lift Height	Up to 30 m
Hoisting Speed	Normal: 2 – 3 MPM VVFD: 0.3 – 2.5 MPM through VVFD Drive
CT Speed	Normal: 10 – 12 MPM VVFD: 1.7 – 12 MPM through VVFD Drive
LT Speed	Normal: 15 – 18 MPM VVFD: 1.5 – 15 MPM through VVFD Drive
Elevated Side	End carriage on gantry rail
Floor Side	A-frame leg on CR rail
Hoist	Crab winch unit
Control	Pendant / Radio Remote
Duty Class	Class II / III
Standards	IS:3177 · IS:807

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Technical Details

Built To Standard, Tested Beyond It

Sync DriveMatched LT speeds both sides

Floor RailCR-60 embedded / surface

Leg DesignBraced A-frame

Skew ControlGuide rollers + VFD

Testing125% SWL load test

ErectionLive-plant installation possible

Wind RatingIS 875 for outdoor bays

CantileverOptional one / both sides

The ETC Quality Promise

125% SWL load test before every dispatch, documented & stamped
IS:2062 tested plates with mill certificates on file
IS:3177 / IS:4137 / FEM 1.001 compliant design calculations
Stress-relieved fabrication at critical welded joints
ISO 9001:2015 certified manufacturing process

About This Product

Engineered For Indian Industry

Semi Goliath cranes solve an awkward but common problem: one side of the bay has a crane rail on building columns, the other side has nothing — an open yard, a lean-to, or a newer extension. Rather than build a full second runway, the crane's far end simply rides a floor rail on its own leg.

The engineering challenge is keeping both ends synchronised; ETC uses matched geared motors with VFD control and guide rollers so the bridge tracks true without crabbing. Installation typically happens without stopping your existing operations.

Rail on one side only?

Send bay photos and column details — we confirm the semi-goliath layout and quote in 24 hours.

Key Features

Half the civil cost — one elevated rail only
Extends existing bays — into yards and lean-tos
Synchronised drives — no skew, no rail wear
Live installation — minimal production loss
Custom leg heights — clear existing machinery
125% load tested — with certificate

Applications

Where This Machine Earns Its Keep

Steel & Rolling Mills

Billet handling, coil movement and furnace charging in continuous duty cycles.

Fabrication Workshops

Positioning heavy weldments and machined assemblies with precise inching control.

Foundries & Forging

Ladle handling and die movement engineered for heat and dust environments.

Warehousing & Logistics

Fast, safe loading and unloading across storage bays and dispatch yards.

Infrastructure Projects

Precast segment and girder erection at bridge, metro and dam sites.

Power & Energy Plants

Turbine hall maintenance cranes built to strict duty classifications.

Safety First

Safety Features As Standard

Overload Limiter

Electronic load cell cuts hoisting the moment load exceeds rated SWL.

⬆ Upper/Lower Limit Switches

Rotary geared and counterweight limits stop hook over-travel in both directions.

Motion Warning Hooter

Audible alarm and flasher warn floor staff during LT/CT travel.

Fail-Safe DC Brakes

Electromagnetic brakes engage automatically on power failure — load holds instantly.

Pendant + Radio Remote

IP-65 push-button pendant with optional wireless remote and emergency stop.

Panel Protection

SPP, overload relays and single-phase preventers protect motors and VFDs.

FAQ

Questions Buyers Ask Us

Twin girders carry a crab winch unit for higher capacity, greater hook lift and continuous duty, while still needing a floor rail on one side only — the practical answer when heavy loads must be handled beside an existing building line.

A crab winch unit with machined drum, true vertical lift reeving and fail-safe braking runs on rails atop the girders, giving full span coverage with cabin, pendant or radio control.

Load is shared between the elevated runway and the floor rail, so foundation loads on the leg side are lower than a full gantry of the same capacity — often saving significant civil cost.

Class II and Class III duty are standard, with mechanisms classified per IS 3177 and FEM 1.001 against your lifts per hour and average load spectrum.

Yes. For yards and partly open bays we add wind-load design to IS 875, storm clamps on the floor rail, weatherproof IP-rated panels and a UV-stable PU topcoat over epoxy primer.

The runway can be extended by adding rail and re-anchoring; relocating the leg line changes the span, which is a structural redesign. It is far cheaper to plan the final rail length at the start.

Most double girder semi goliath cranes are erected, laser-aligned and commissioned within 5–8 days once the floor rail and elevated runway are ready.

Send us your shed drawing or photographs of the existing gantry girder and columns. We check the runway capacity against the calculated wheel loads and tell you honestly whether it will carry the crane or needs strengthening.

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