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Overhead Cranes · Underslung Variant

Single Girder Underslung Crane

A lightweight crane suspended from the bottom flange of the runway beams instead of running on top — saving headroom and letting adjacent bays share runways. Capacities to ~10 tonnes, designed to IS 3177 & IS 807.

Capacity up to ~10 tRoof-suspendedLow headroomShared runwaysIS 3177 / 807

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LOADMATE Single Girder Underslung Crane — view 2

LOADMATE Single Girder Underslung Crane — view 3

Single Girder Underslung Crane — in-house manufactured at Surat

~10 tMax SWL

LowHeadroom

Short–modSpan

M3–M6Duty class

415 V3-ph supply

125%Load test

Overview

Single Girder Underslung Crane.

The Single Girder Underslung Crane hangs from the bottom flange of the runway beams rather than riding on top, so it uses minimal headroom and lets neighbouring bays share the same runway columns. The hoist runs underslung on the single girder.

It suits light-to-medium duty up to ~10 tonnes over short-to-moderate spans, and is designed to IS 3177 / IS 807. Ideal for low-roof buildings and flexible, multi-bay layouts where close-to-roof lifting matters.

Technical parameters

Capacity, span & speeds.

Single girder underslung crane — 1 to 10 Ton (to 25 Ton on request), hung from runway beams for maximum side approach. Final build confirmed on the project datasheet.

Capacity (SWL)	MT	1	2	3	5	7.5	10
Model	SGUS	SGUS 0102	SGUS 0204	SGUS 0304	SGUS 0504	SGUS 7.504	SGUS 1004
Maximum Span	m	25	25	20	20	20	15
Maximum Lift	m	30	30	30	25	25	25
Max. Hoist Speed	m/min	10	8	8	8	8	5
Max. Cross-Travel Speed	m/min	20	20	20	20	20	20
Max. Long-Travel Speed	m/min	25	25	25	25	20	20
Test Load	MT	1.25	2.5	3.75	6.25	9.38	12.5

Model codes shown (SGUS). Available manual, semi-electric or fully electric. Runway beam must be sized for the imposed wheel load.

Technical specifications

Specification sheet.

Standard ranges — send your requirement and we’ll configure to match.

Crane type

Single Girder Underslung (bottom-flange running)

Safe Working Load

Up to ~10 t

Span

Short to moderate

Lift height

To requirement (headroom-optimised)

Suspension

Hung from runway bottom flange

Runway sharing

Yes — adjacent bays can share columns

Duty / class

M3 – M6

Control

Pendant push-button, 110 V (radio optional)

Power supply

415 V, 3-phase, 50 Hz

Operating environment

Indoor (outdoor on request)

Mechanical & electrical

Bridge / girder

Welded box girder, IS:2062 (E250) structural steel

End carriages

Fabricated box section with forged double-flanged wheels

Travel wheels

Forged steel, heat-treated, on anti-friction bearings

Hoisting motor

TEFC squirrel-cage, Class F insulation, IP55, crane-duty

Travel motors

TEFC, Class F, with integral electromagnetic brakes

Brakes

Electromagnetic, spring-applied fail-safe (engage on power loss)

Gearbox

Helical hob-cut gears, 250–350 BHN, carbon alloy steel

Wire rope

IS:2266, minimum factor of safety 6

Hook

Forged, with safety latch

Control panel

Modular, with overload relay & single-phasing preventer

Painting

Primer + synthetic enamel (epoxy / PU optional)

Class	Duty	Typical use
M5	Medium duty	Machine shops and general indoor / outdoor industrial use.
M7	Heavy duty	Steel mills, fabrication shops, paper mills, scrap yards, induction furnaces (magnet / bucket).
M8	Extra-heavy duty	Steel mills and heavy engineering; hot-metal applications on request.

Standard features

What comes built in as standard.

Welded box-girder bridge to IS:2062

Forged, heat-treated double-flanged wheels

TEFC crane-duty motors, Class F, IP55

Spring-applied fail-safe EM brakes (hoist & travels)

Helical hob-cut gearboxes (250–350 BHN)

Hoist upper & lower limit switches

Travel end limit switches, buffers & end stops

Overload protection / load limiter

110 V pendant push-button control

Single-phasing preventer & overload relay

Wire rope to IS:2266 (FoS 6); forged hook with latch

125% SWL load test + test certificate

Configure your unit

Optional upgrades & add-ons.

Radio remote control

VFD stepless drives with anti-sway

Soft starters

Anti-collision, zone-limiting & no-fly zones

Flame-proof / spark-proof (Ex) build

Outdoor weatherproofing — canopy, IP65, anti-corrosion paint

Shrouded DSL or festoon power feed

100% radiography of butt welds

Special hooks, C-hooks, magnets or grabs

Warning hooter, flasher & beacon

Operator cabin with walkway

Load display, overload cut-out & hour-meter

Advantages

Why a LOADMATE underslung single.

Excellent headroom use

Bottom-flange running puts the hook as close to the roof as possible — more lift in low buildings.

Shared runways

Neighbouring bays can run off the same columns, saving steel and civil cost.

Lightweight & economical

Lower deadweight than a top-running crane — lighter columns and lower first cost.

Flexible layouts

Suits cross-bay transfer and irregular building shapes via the suspended runway.

Retrofit-friendly

Hangs from existing roof structure without dedicated runway columns.

Built & tested in-house

Designed to IS 3177 / 807 and load-tested at 125% of SWL.

Configurations

Two ways to specify it.

Single-bay underslung

One girder serving a single bay — the simplest, most economical layout.

Best for: Workshops and low-roof production bays.

Multi-bay shared runway

The suspended runway is shared across adjacent bays for cross-bay transfer.

Best for: Plants needing flexible inter-bay handling.

Applications

Industries we serve.

Tap any industry for application detail.

Steel & MetalsView industry Engineering & FabricationView industry AutomotiveView industry Cement & ProcessView industry Power & EnergyView industry Warehousing & LogisticsView industry

Standards & compliance

Designed and certified to published standards.

IS 3177

Code of practice for EOT cranes

Design, construction, testing & operation of EOT cranes up to 50 t.

IS 807

Structural design of cranes

Design, manufacture, erection & testing of crane structures.

IS 4137

Heavy-duty EOT cranes

Heavy-duty M7 / M8 applications reference this standard.

ISO 9001 + ZED

Quality & manufacturing

ISO 9001:2015 certified plus Government of India ZED Gold tier.

FAQs

Underslung Single — technical questions.

What is an underslung crane?

A crane that hangs from the bottom flange of the runway beams instead of running on top — saving headroom and allowing adjacent bays to share runway columns.

What capacity does the single-girder underslung handle?

Light-to-medium duty up to about 10 tonnes. For higher loads or longer spans, see the double-girder underslung crane.

Why choose underslung over top-running?

When headroom is tight, when you want close-to-roof lifting, or when adjacent bays should share a runway. It also retrofits into existing roof structures.

Can it run on my existing building?

Often yes — underslung cranes are flexible with runway layouts. Share your runway and roof drawing and we’ll check flange capacity and headroom.

Which standards apply?

IS 3177 and IS 807, with ISO 9001:2015 and ZED Gold certification, and a 125% load test.

Indoor or outdoor?

Primarily indoor; outdoor execution with weatherproofing is available on request.

Need a Underslung Single quote?

Send your requirement and our application engineers respond within 24 hours with a configuration, spec sheet and quote.