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RF4-2
HEE
Product Introduction
This marine horizontal and vertical bidirectional four-roller cable guide is a high-performance directional device specifically designed for complex ship mooring operations. Its core advantage lies in the cross-arranged structure featuring two horizontal rollers and two vertical rollers, enabling synchronized operation and independent guidance in both horizontal and vertical directions. This design effectively addresses the limitation of traditional single-direction cable guides that cannot achieve bidirectional guidance, significantly improving the efficiency and safety of mooring
operations.
The product is entirely constructed from high-strength cast steel in a one-piece molding process, featuring a robust main structure resistant to deformation, capable of withstanding impact loads from high-tension mooring operations. The rollers are precision-machined from wear-resistant alloy steel and polished for smooth, effortless rotation, effectively reducing frictional wear between the ropes and rollers. This design extends rope lifespan and lowers vessel maintenance costs.
In a bidirectional operation scenario, the two horizontal rollers guide the cable for lateral traction and steering, ensuring smooth movement on the horizontal plane without deviation or jamming. The two vertical rollers simultaneously handle vertical cable guidance, accommodating tasks such as cable elevation, descent, and vertical traction. The bidirectional guidance systems operate independently yet in coordination, enabling stable and precise cable direction even in complex environments with multi-angle, large-angle turns, and high tension.
We fully consider the diverse needs of different ship types and operational scenarios, offering a range of standard sizes in stock to meet the conventional requirements of small workboats, large cargo vessels, oil tankers, and offshore platforms. Additionally, we support comprehensive customization services, allowing clients to tailor roller spacing, overall dimensions, load ratings, and even surface coating colors based on provided vessel drawings, installation space dimensions, cable diameters, and working loads, ensuring perfect alignment with actual installation and operational needs.
The product surface is treated with a professional anti-corrosion coating and has passed salt spray testing, effectively resisting seawater erosion, salt spray corrosion, exposure to sun and rain, and other harsh marine environments. It is suitable for long-term use on open decks with a service life exceeding 15 years. The installation method is flexible, allowing for welding or bolt fastening based on actual deck conditions. The thickened base design, combined with reinforced structures, ensures stability and no displacement after installation, guaranteeing safety during operation.
Product Features
◎ Horizontal and Vertical Dual-Synchronous Operation: Equipped with 2 horizontal and 2 vertical rollers in a cross-arrangement, it enables simultaneous cable guidance in both horizontal and vertical directions. The bidirectional independent operation ensures no interference, making it suitable for complex mooring scenarios and significantly enhancing operational efficiency.
◎ Four-wheel stable force structure: Four evenly distributed rollers ensure balanced force distribution, effectively dispersing mooring tension to prevent equipment deformation or cable breakage caused by excessive localized stress. Suitable for high-tension, heavy-load mooring operations, ensuring safer and more reliable performance.
◎ Low Friction Wear-Resistant Design: The alloy steel roller undergoes precision polishing, ensuring smooth rotation without jamming. This significantly reduces frictional wear between the cable and the roller, minimizing the risk of cable breakage and wear, extending the cable's service life, and lowering maintenance costs.
◎ High-strength corrosion resistance and durability: The cast steel body exhibits strong tensile and deformation resistance, with a professional anti-corrosion coating on the surface. It can withstand harsh marine environments such as seawater, salt spray, and humidity, remaining rust-free and aging-resistant for long-term outdoor use with an extended service life.
◎ Multiple Sizes Available + Full Customization Service: We stock a variety of standard sizes for direct orders and shipments. Additionally, we support non-standard customization, allowing adjustments in dimensions, roller spacing, and load ratings based on installation space, cable diameter, and working load requirements, ensuring compatibility with all ship types.
◎ Easy and Secure Installation: Supports both welding and bolting installation methods, compatible with decks of varying thicknesses; reinforced base ensures no displacement or shaking after installation, capable of withstanding high-tension operational impacts to ensure safety.
◎ Compliance Certification Support: The product complies with international ship standards such as CB/T 436 and ISO 13767, and can provide certifications from leading global class societies like CCS, meeting the compliance requirements for ocean-going vessels and international procurement.
Diagram and specification parameters
| NO. | Name&Specifications | Qty | Material |
| 1 | BASE | 1 | STEEL |
| 2 | LEVEL PIN | 2 | ALLOY STEEL |
| 3 | STEEL PIPE | 2 | STEEL |
| 4 | VERTICAL PIN | 2 | ALLOY STEEL |
| 5 | STEEL PIPE Ⅱ | 2 | STEEL |
| 6 | COPPER SLEEVE | 8 | BRONZE |
| MODEL No. | Max Wire Size | Roller Dia. | A | B | C | D |
| RF4-2 | 1/2" | 2 1/2" | 12" | 5 1/2" | 10" | 3 1/4" |
| RF4-4 | 3/4" | 4 | 18" | 9" | 15" | 5 1/8" |
| RF4-6 | 1 1/4" | 6 | 24" | 14 1/4" | 21 3/4" | 7 1/2" |
| RF4-8 | 1 3/4" | 8 | 32" | 17" | 27" | 9 3/8" |
| RF4-10 | 2 1/4” | 10 | 40" | 21" | 35" | 15 1/2" |
Standard Features
Designed for breaking strength of wire with 45⁰ wrap on roller
Grease lubricated bronze bearings
Hardended rollers for longer life
Weld down base
Alloy steel shafts
Scope of Application
Widely applicable to various types of cargo ships, oil tankers, container ships, engineering ships, workboats, yachts, and offshore platforms, it can be used for various operational scenarios such as port berthing, offshore mooring, ship towing, cable turning, etc. It is particularly suitable for complex operations that require simultaneous horizontal and vertical cable guidance, such as offshore platform mooring, large ship bi-directional traction, etc. It is an indispensable core guiding equipment in ship mooring systems.
Our characteristics
★ Horizontal and vertical bidirectional four roller structure, synchronized horizontal and vertical operation, more efficient guidance
★ Horizontal 2+vertical 2 rollers, bi-directional independent guidance, no jamming or deviation of the rope
★ Multi size spot supply, supporting customized according to drawings and needs, suitable for various ship types
★ Cast steel body+alloy steel roller, corrosion-resistant and durable, suitable for harsh marine environments
★ Compliant with international ship standards, able to provide classification society certification and global procurement adaptation
