50 kN Electric Cable & Hose Reel Winch for Offshore Engineering Vessels

Product Specification

50 kN Electric Cable & Hose Reel Winch for Offshore Engineering Vessels

Product Overview

This 50 kN electric cable and hose reel winch is intended for engineering vessels, offshore service vessels, work barges, and other special-purpose ships that need controlled storage, reeling, payout, and recovery of large flexible cables or hoses. The unit can be supplied with a single or double drum and configured for local or remote operation. Where a 254 mm suction and delivery hose is included, the hose certification and service rating should be treated separately from the winch certification.

The equipment should be distinguished from a subsea cable tensioner or traction winch. If the project requires active cable laying under controlled subsea tension, the design scope must also define payout tension, brake holding capacity, load monitoring, spooling control, overboarding arrangement, emergency functions, and any applicable cable-laying-system certification. For simple storage and reeling duty, the main engineering focus is drum capacity, minimum bending radius, line pull by drum layer, speed, brake control, electrical package, deck foundation, and safe handling of the cable or hose.

Quick Specifications

• Reference maximum line pull: 50 kN → operating speed, drum layer, and whether this is continuous or peak pull must be confirmed.

• Reference line speed: 8–30 m/min → final speed is linked to line pull, drum diameter, gearing, and motor power rather than being constant at full pull.

• Storage capacity: 40–250 m → capacity depends on cable / hose outside diameter, minimum bending radius, drum barrel diameter, flange diameter, and usable drum width.

• Drum arrangement: Single or double drum → select according to whether one or two cable / hose services must be stored or handled independently.

• Hose interface: 254 mm suction / delivery hose stated → confirm actual outside diameter, minimum bend radius, mass per metre, pressure rating, and fire-retardant certificate scope.

• Electric drive: 415 V / 50 Hz reference supply with 7.5 kW motor stated → final motor size requires confirmation against the required pull-speed operating point.

• Controls: Local and remote control; wireless remote can be supplied → local priority, emergency stop, loss-of-signal response, and interlocks should be defined.

• Marine exposure: IP56 control box stated and Sa 2 1/2 blast-cleaned steel with epoxy coating → motor enclosure, total coating DFT, corrosion category, and offshore class requirement remain project-specific.

Main Technical Parameters

Main supplied data, corrected to use engineering terms that are suitable for quotation and project confirmation.

Cable / Hose Capacity & Drum Selection

• Drum capacity should be calculated from the actual cable or hose outside diameter together with the barrel diameter, flange diameter, usable drum width, and required freeboard at the flange.

• For a large 254 mm hose, minimum bending radius is a primary selection input. The drum barrel should not be sized from nominal hose diameter alone because excessive bending can damage reinforcement, liner, conductors, or internal structure.

• The hose or cable mass per metre affects drive torque, braking requirement, shaft load, bearing load, and deck foundation reactions. Wet weight and suspended outboard length may also be relevant during deployment.

• A double-drum arrangement should define whether each drum is independently driven, clutch-controlled, or mechanically linked. Capacity, pull, speed, brake, and control logic should be stated per drum.

• If the service medium or electrical signal must remain connected while the drum rotates, confirm whether a rotary fluid union, electrical slip ring, fibre-optic rotary joint, or combined rotary interface is required.

• Where the product is only stored and disconnected before payout, a rotary union or slip ring may not be required. This should be decided from the actual operating sequence.

Line Pull, Speed & Motor Sizing

• Line pull on a drum varies with effective winding radius. For a constant drive torque, pull is highest on the first layer and reduces as the cable or hose builds up on the drum.

• Line speed changes with drum radius and drive speed. The quoted 8–30 m/min range should therefore be linked to a defined drum layer and operating load.

• The supplied 7.5 kW motor and 50 kN pull cannot be treated as 50 kN at every speed. The final datasheet should include a pull-speed curve or at least rated pull at rated speed and maximum speed at reduced pull.

• Motor sizing should include gearbox efficiency, starting / acceleration torque, brake release, expected duty cycle, ambient temperature, starts per hour, deck exposure, and any VFD low-speed cooling requirement.

• If controlled cable laying is required, specify minimum controllable payout tension, maximum operational line load, brake / holding capacity, speed regulation, load-cell range, and emergency stop behaviour.

Spooling & Cable / Hose Protection

• Large-diameter cable or hose should enter the drum without excessive fleet angle, cross-over, pinching, or local crushing. Fairlead location and lead angle should be coordinated with the deck arrangement.

• A level-wind or traversing guide may be required for multi-layer storage. Its drive, pitch, travel limits, synchronization, and manual recovery arrangement should match the cable / hose diameter and drum geometry.

• Where a level wind is not fitted, the operating procedure should define how the cable or hose is guided onto the drum safely without placing personnel in a pinch or snap-back zone.

• Contact surfaces should be smooth and free of sharp edges. Drum barrel, flanges, guide rollers, and any sheave should respect the cable / hose manufacturer’s minimum bending radius and local contact-pressure limits.

• For subsea or offshore deployment, an overboarding sheave, chute, roller path, or separate tensioner may be required. These items are not automatically included in a storage / reel winch.

Electric Drive, Brake & Control

• 415 V / 50 Hz is a project power-supply value, not an offshore qualification by itself. Final motor, brake, control cabinet, cable entries, heaters, and protection should suit the vessel electrical system and marine environmental conditions.

• The stated IP56 control box should be verified against IEC 60529 or the project-approved equivalent. The motor, brake, junction boxes, encoders, load cells, and remote-control receiver require their own enclosure / environmental ratings.

• For marine electrical integration, IEC 60092 series requirements can be relevant to motors, low-voltage switchgear, control, automation, protection, and shipboard installation depending on the project.

• Wireless remote control should have a defined loss-of-signal response, local / remote selector, emergency stop philosophy, operator enable / hold-to-run function where required, and radio approval for the intended vessel / operating area.

• Brake design should define whether the brake is spring-applied / power-released, its holding torque, dynamic stopping duty, emergency stopping function, and behaviour after power loss.

• If VFD control is used, the scope should confirm low-speed torque, motor cooling, braking resistor or regenerative function, EMC, harmonic considerations, and class-approved control logic.

Offshore Installation & Deck Integration

• The winch foundation should be checked for drive torque, line pull, brake reaction, shaft and bearing loads, dynamic vessel motion, and the direction of the cable / hose lead.

• Deck reinforcement, welding details, holding-down bolts, grout if used, drainage, corrosion protection, access for motor / gearbox removal, and safe maintenance space should be confirmed from the GA drawing.

• For outdoor offshore installation, exposed components should be selected for salt spray, humidity, water ingress, temperature, vibration, and corrosion. Coating system DFT and paint manufacturer specification should be confirmed rather than relying only on the number of coats.

• Surface preparation should be specified as Sa 2 1/2 or the approved project equivalent before coating. The three-coat epoxy system should identify primer, intermediate coat, topcoat, colour, total DFT, and repair procedure.

• If installed in a hazardous area, the motor, brake, sensors, control box, wireless equipment, slip rings, and rotary unions require the applicable hazardous-area assessment and certification. No Ex rating is assumed on this page.

Selection & Inquiry Guide

Step 1: Confirm actual duty: storage reel, recovery / payout winch, hose reel, cable reel, or active cable-laying winch with controlled tension.

Step 2: Provide cable / hose data: type, outside diameter, mass per metre, minimum bending radius, permitted tensile load, length, termination size, and whether it is live / pressurized while reeled.

Step 3: Confirm performance: required continuous line pull, peak pull, pull at first / full drum, payout and recovery speed, brake holding load, duty cycle, and required tension-control accuracy.

Step 4: Confirm drum arrangement and interfaces: single / double drum, barrel and flange limits, level wind, slip ring, fibre-optic rotary joint, fluid rotary union, guide rollers, and overboarding equipment.

Step 5: Provide electrical / control requirements: voltage, frequency, motor duty, IP rating, VFD / starter, local and remote station, wireless remote, emergency stop, load monitoring, and vessel automation interface.

Step 6: Provide vessel / offshore project data: installation location, deck foundation drawing, class society, hazardous-area status, coating specification, FAT / witness scope, quantity, destination, and delivery time.

Structure

Fabricated steel base | Single or double storage drum | Drum shaft and bearings | Electric motor | Reduction gearbox | Marine-duty brake | Optional clutch | Optional level-wind system | Local control station | IP-rated control cabinet | Optional wireless remote | Optional slip ring / rotary union | Guards and deck foundation interface

Engineering & Quality Advantages

• The page separates storage capacity, line pull, line speed, brake capacity, and cable-laying tension duty so that one number is not incorrectly used for several different operating conditions.

• Drum design is based on the handled product’s bending radius and geometry, helping reduce hose flattening, cable crushing, excessive fleet angle, and cross-winding.

• Drive and brake sizing can be checked at first layer and full drum, giving the purchaser a clearer basis for motor, gearbox, brake, and structural review.

• Optional level wind, load monitoring, slip ring / rotary union, and remote control allow the winch to be configured around the actual cable / hose service instead of using a generic reel arrangement.

• For cable-laying projects, design and certification can be expanded to include the line-tension control and offshore system scope required by the purchaser or classification society.

• Factory acceptance testing can be arranged for no-load operation, rotation direction, local / remote functions, emergency stop, brake function, speed, load test, alarms, and control interlocks according to the approved test procedure.

Custom Attributes

• Product Type: Electric cable / hose reel winch → storage, payout and recovery equipment for engineering and offshore vessels.

• Reference Line Pull: 50 kN → final rating to identify continuous / peak duty, drum layer and speed.

• Reference Speed: 8–30 m/min → operating point depends on motor, gearing, drum radius and load.

• Capacity: 40–250 m → final value calculated from cable / hose OD and drum geometry.

• Drum: Single / double → independent or linked operation to be confirmed.

• Reference Hose: 254 mm suction / delivery hose → hose MBR, pressure, fire-retardant certificate and mass to be confirmed.

• Electric Package: 415 V / 50 Hz reference, 7.5 kW stated motor → final motor sizing subject to pull-speed calculation.

• Control: Local / remote / optional wireless → fail-safe logic, E-stop and loss-of-signal response to be defined.

• Surface Protection: Sa 2 1/2 preparation + project epoxy coating system → paint type and total DFT to be confirmed.

• Certification: According to project requirement → class design approval, product certification and witness testing subject to applicable scope.

How It Works

Operator selects local or remote mode → Brake is released under the approved control logic → Electric motor and gearbox rotate the drum → Cable or hose is reeled in or paid out at the selected speed → Level wind / guide system controls spooling when fitted → Brake stops and holds the drum → Emergency stop or loss-of-signal command returns the system to the defined safe state

Applications

Cable-laying and cable-repair vessels | Offshore construction vessels | Engineering ships | Work barges | Subsea service vessels | Hose handling stations | Temporary utility cable / hose storage | Seabed survey and special-purpose deck systems | Project-specific offshore reeling systems

Certifications & Testing

Design approval, product certification, FAT witnessing, material traceability, electrical inspection and offshore equipment certification can be arranged according to the actual duty and classification scope. DNV specifically lists pipe- and cable-laying systems among equipment for which design / type approval services are available, including use of DNV recommended practice RP-0232 where applicable. The final governing rules should be agreed with the purchaser and class society before design release.

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate — available according to project requirement and approval scope.

Drawing & Photos

FAQ

Q1: Can a 7.5 kW motor provide 50 kN line pull at 30 m/min?

A1: Not as a continuous mechanical operating point. A 50 kN pull at 30 m/min corresponds to 25 kW of ideal mechanical power before gearbox and other losses. The supplied 7.5 kW value therefore needs a confirmed pull-speed curve; 50 kN may be a low-speed or peak pull, while higher speed may apply at reduced load.

Q2: What information is needed to confirm 40–250 m drum capacity for a 254 mm hose?

A2: Provide the actual hose outside diameter, minimum bending radius, mass per metre, permissible crushing / sidewall load, required length, termination dimensions, and whether the hose must remain pressurized or connected while reeled. Drum barrel diameter, flange diameter and width are then selected from these inputs.

Q3: Is this winch automatically suitable for subsea cable laying?

A3: No. A storage / reeling winch can assist payout and recovery, but controlled offshore cable laying may also require defined line-tension control, brake holding capacity, load monitoring, level wind, overboarding equipment, emergency functions, foundation verification and project-specific certification.