0.5–10T Explosion-Proof Marine Electric Trolley Crane | Pump Room & Engine Room

Product Specification

0.5–10T Explosion-Proof Marine Electric Trolley Crane | Pump Room & Engine Room Monorail Hoist

Product Overview

This 0.5–10T marine electric trolley crane is a rail-mounted shipboard lifting appliance for maintenance and equipment handling inside pump rooms, engine rooms, machinery spaces and vessel hangars. Unlike a slewing deck crane, the hoist and trolley travel along a single beam or monorail path, allowing components such as pumps, valves, motors, machinery parts and service equipment to be lifted and transferred along a defined overhead route.

For tanker pump-room service, the electrical version can be configured for a classified hazardous area, but “explosion-proof” is not a generic property of the whole crane. The required Ex protection concept must be selected from the vessel’s hazardous-area classification, gas group, temperature class, ambient temperature and class/flag requirements. For ordinary engine-room or hangar service, a standard marine electric or manual configuration may be more appropriate. Final track arrangement, lifting height, structural supports, controls and certification scope are project-specific.

Quick Specifications

• SWL range: 0.5 / 1 / 2 / 3 / 5 / 10 t → select according to the heaviest maintained component, lifting accessories and approved lifting plan.

• Travel path: source data gives 2–18 m for 0.5 t and 2–30 m for 1–10 t → treated as rail working range / travel length pending GA confirmation, not as boom-crane outreach.

• Horizontal travel speed: 6 m/min → controlled transfer of suspended machinery along the beam.

• Hoisting speed: 8 m/min → reference lifting speed for the supplied electric configurations.

• Power supply: AC 380 V 50 Hz / AC 415 V 50 Hz / AC 440 V 60 Hz, 3-phase → final voltage, frequency and control voltage to be fixed before motor and Ex equipment selection.

• Minimum track curve radius: 1.0–3.0 m according to SWL → important for curved monorail layout, trolley wheelbase and ship structure coordination.

• Ambient working temperature: -20°C to +50°C as supplied → final design temperature and Ex equipment temperature range to follow the project specification.

• Corrosion protection: abrasive blast-cleaning to Sa 2½ with a three-layer epoxy coating system as project reference → final coating system and dry film thickness to be confirmed.

Main Technical Parameters

Main performance data from the supplied product table. Final values are subject to approved GA, motor schedule and track drawing.

Hazardous-Area & Explosion-Protection Requirements

• Pump-room installation on a tanker can involve hazardous-area requirements. The project must state the classified zone/location and the applicable vessel electrical specification before the electric trolley crane is configured.

• Required Ex marking cannot be assumed. Gas group, temperature class, Equipment Protection Level / protection type, ambient range and certificate scheme must be defined by the project or approved electrical documentation.

• The complete electrical package—not only the hoist motor—should be checked for suitability in the specified hazardous area, including travel motor, hoist motor, brakes, control enclosure, pendant or remote control, limit devices, junction boxes, cable entries and glands where applicable.

• IEC 60092-502 is a relevant tanker electrical-installation reference, while the IEC 60079 series covers equipment for explosive atmospheres. The exact applicable editions and class interpretations should follow the vessel contract and recognized organization requirements.

• A manual trolley / manual hoist arrangement can eliminate some powered electrical equipment, but it does not automatically remove all hazardous-area or ignition-source considerations. Final suitability remains project-specific.

• Engine rooms and hangars should not automatically be described as hazardous areas. Standard marine electrical equipment may be suitable unless the vessel’s area classification requires an Ex configuration.

Rail, Hoist & Ship Structure Interface

• The monorail / single-beam track carries wheel loads from the trolley, lifted load and equipment self-weight into the ship structure; beam section, hanger/support spacing and local reinforcement must therefore be checked by the shipyard or design office.

• For curved tracks, the specified minimum rail curve radius must be coordinated with trolley wheel spacing, wheel flange geometry, drive arrangement and cable/festoon routing.

• Required lifting height, hook approach, headroom and end clearances should be confirmed from the machinery-removal route, not only from SWL.

• Travel end stops and structural stopping arrangements should be shown on the approved rail drawing. Their final design must match the trolley configuration and vessel structural interface.

• If the crane is intended for operation at sea, the operating condition, vessel motions, heel/trim criteria and any required securing or parking arrangement should be stated in the design basis.

• The supply boundary should clearly identify whether the rail beam, beam supports, ship structural foundations, electrical feeder/festoon and installation fasteners are included or shipyard-supplied.

Safety & Control Configuration

• The lifting system should be specified with an appropriate hoist brake and controlled stopping function for the selected SWL and duty. Exact brake design and redundancy are to be confirmed by the approved design.

• Upper/lower hoist limiting, trolley end travel limiting, emergency stop and overload protection should be defined in the project safety/control scope and verified during commissioning where applicable.

• For powered units, electrical protection, control voltage, cable routing, pendant or remote-control arrangement and isolation points should be coordinated with the vessel electrical system.

• Hook, wire rope or load chain, sheaves, drum, trolley wheels and other load-bearing components must be selected as part of the approved lifting appliance, not independently from the rated SWL.

• The crane should carry permanent SWL identification and the required equipment markings after approval and testing. Hazardous-area electrical components require their own approved Ex markings where applicable.

Selection & Inquiry Guide

Step 1: Confirm application: tanker cargo pump room, engine room, machinery space, workshop or vessel hangar; state whether the location is a classified hazardous area.

Step 2: Confirm required SWL, heaviest lifted item, lifting height, hook approach, rail working length and whether the track includes curves; provide GA or machinery-removal route if available.

Step 3: Confirm track data: beam / rail section, minimum curve radius, support spacing, available headroom, end clearances, ship structural interface and whether the rail is in supplier or shipyard scope.

Step 4: For electric units, confirm power supply, control voltage, operating mode and the complete hazardous-area requirement: zone/location, gas group, temperature class, Ex protection / EPL and required certificate scheme.

Step 5: Confirm operating environment and duty: harbour only or operation at sea, ambient temperature, corrosion/coating system, expected lifting frequency and any project-specific heel / trim criteria.

Step 6: Confirm classification society / flag requirement, SOLAS lifting-appliance scope, required design approval, inspection witnessing, load test documentation, quantity, destination and delivery schedule.

Structure

Single-beam / monorail track | Traveling trolley | Electric or manual hoist | Hook and lifting medium | Travel drive | Hoist drive and brake | Electrical control / pendant as applicable | Limit devices and end stops | Ship structural supports / hangers

Engineering & Quality Advantages

• Rail-mounted lifting keeps the hook path aligned with the planned maintenance route, which is useful where machinery must be removed through restricted engine-room or pump-room spaces.

• Multiple SWL options from 0.5 to 10 t allow the system to be matched to different machinery-maintenance duties without presenting it as a general-purpose deck crane.

• The listed curved-track radii provide a useful starting point for non-straight machinery routes, but actual compatibility must be verified with the selected trolley and rail profile.

• Separating the travel and hoist drive functions allows motor ratings, brakes and controls to be matched to the required SWL, speed and vessel electrical supply.

• For hazardous-area projects, treating the Ex package as a complete system reduces the risk of specifying an Ex motor while leaving other electrical components unsuitable for the classified location.

• Surface preparation to Sa 2½ before a project-defined epoxy coating system provides a sound basis for corrosion protection in marine machinery spaces; final coating build-up and DFT should follow the vessel paint specification.

Custom Attributes

Product Type: Marine rail-mounted trolley crane / monorail hoist → for internal ship machinery and maintenance handling.

SWL Range: 0.5–10 t → six reference capacities in the supplied performance table.

Drive: Electric or manual → electrical configuration can be selected for standard marine or hazardous-area duty as specified.

Travel Arrangement: Single-beam / monorail track → straight or curved route subject to approved rail geometry.

Reference Speeds: 6 m/min travel and 8 m/min hoist → electric version data from the supplied table.

Power Supply: 380 V 50 Hz / 415 V 50 Hz / 440 V 60 Hz, 3-phase → project voltage must be confirmed before motor selection.

Ambient Range: -20°C to +50°C reference → final equipment and Ex certification range to match project requirements.

Surface Protection: Sa 2½ blast-cleaning + three-layer epoxy coating reference → final paint system and DFT to be confirmed.

Explosion Protection: Project-specific → hazardous area, gas group, temperature class and Ex marking cannot be assumed.

Certification: Available according to project requirement → design approval, survey, testing and document scope to be agreed before order.

How It Works

Hoist lifts the maintenance load vertically → Traveling trolley moves the suspended load along the single beam / monorail → Curved track section is negotiated within the approved minimum radius where provided → Load is positioned at the maintenance or removal point → Brake and controls hold / stop the lifting appliance → Trolley is parked and secured as required after operation

Applications

Tanker cargo pump rooms with approved Ex configuration | Engine rooms | Machinery spaces | Marine workshops | Vessel hangars | Equipment-maintenance routes | Pump / motor / valve handling | Newbuilding and retrofit shipboard lifting systems

Regulatory, Testing & Certification

For SOLAS vessels, SOLAS Regulation II-1/3-13 has applied to onboard lifting appliances since 1 January 2026. For lifting appliances installed on or after that date, the regulation requires design, construction and installation in accordance with a recognized classification society or equivalent Administration-accepted standard, followed by load testing and thorough examination before first use and permanent SWL marking. The flag Administration determines the extent of application for lifting appliances below 1,000 kg; this is relevant to the 0.5 t model.

Class and statutory scope should be confirmed before quotation because design approval, manufacturing survey, product certification, load testing, thorough examination and the ship’s lifting-appliance register may be separate deliverables. DNV-ST-0377 is one recognized shipboard lifting-appliance standard used for equipment such as engine-room cranes; equivalent class rules may apply for other societies.

Certification options referenced for this product range: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate. Availability is subject to project requirement, class applicability, approved design and agreed inspection/test scope; certificates are not assumed to be supplied by all societies simultaneously.

Drawing & Photos

FAQ

Q1: What makes a pump-room trolley crane “explosion-proof”?

A1: The designation depends on the approved hazardous-area configuration, not only on the crane name. The project must define the hazardous location, gas group, temperature class and required Ex protection / EPL. Motors, brakes, controls, enclosures, cable glands and other electrical components must then be selected and certified for that requirement where applicable.

Q2: Is the 2–30 m value a crane outreach?

A2: It should not be treated as boom-crane outreach. The source table calls it “Working Radius”, but this product travels on a single beam / monorail and separately lists a rail track radius. The 2–18 m and 2–30 m values are therefore presented as working / travel range pending confirmation from the GA drawing.

Q3: What information is needed for class approval and quotation?

A3: Provide SWL, rail route and curve radius, lifting height, hook approach, beam / support drawing, power supply, operating condition, hazardous-area classification if applicable, class / flag requirement, coating system, quantity and delivery destination. For SOLAS vessels, state whether the unit is a new installation on or after 1 January 2026 so the required design approval, load test and documentation scope can be established.

Drawing of Single Beam Pump Room Explosive Proof Electric Trolley Crane Hangar Crane Ship Deck Equipment