Five-Roller Universal Fairlead with Upper Roller | Shipside Rope Guide for Mooring and Towing, CB/T 3062 Type

Five-Roller Universal Fairlead with Upper Roller | Shipside Rope Guide for Mooring and Towing, CB/T 3062 Type

Product Overview

The CB/T 3062 Type C five-roller universal fairlead with upper roller is a shipside rope-guiding fitting used on the freeboard deck or bulwark area where mooring or towing ropes need controlled entry from multiple directions. The arrangement combines three vertical rollers and two horizontal rollers to guide steel wire ropes or nylon ropes through the fairlead opening while reducing sliding contact and local rope abrasion.

This page is prepared from the supplied CB/T 3062-2011 Type C product data. Online reference information for CB/T 3062-2011 identifies the standard as a roller head fairlead standard covering classification, requirements, test methods, inspection rules, marking, packaging, and transportation for roller head fairleads. The supplied table does not provide SWL values, so load marking, rope lead angle, hull reinforcement, and class inspection scope should be confirmed by the project drawing or official standard requirement before quotation.

Quick Specifications

• Product type: Type C five-roller universal fairlead with upper roller → shipside rope guide for mooring and towing rope direction control.
• Standard reference: CB/T 3062-2011 → used when the vessel drawing specifies CB/T roller head fairlead arrangement.
• Roller arrangement: 3 vertical rollers + 2 horizontal rollers → guides the rope path from multiple entry directions and helps control rope jump-off risk.
• Installation position: shipside / freeboard deck / bulwark seat → welded structure, opening clearance, and local reinforcement should be checked before production.
• Applicable rope range from supplied data: steel wire rope 19.5–68 mm and nylon rope 36–100 mm → final rope size selection should follow the vessel mooring or towing arrangement.
• Main dimensions provided: E, F, D, d, L, L1, L2, L3, B, B1, B2, H, and H1 → useful for webpage drawing, seat layout, and replacement checking.
• Weight range from supplied data: 182–4021 kg → important for handling, installation lifting, deck structure review, packing, and freight planning.
• Surface treatment: sandblasting to Sa 2.5 + one layer epoxy shop primer, polished, galvanized, or customized treatment → final coating should follow vessel specification.

Main Technical Parameters

Selection & Inquiry Guide

Step 1: Confirm the required standard and model: CB/T 3062-2011 Type C five-roller universal fairlead with upper roller.

Step 2: Confirm rope type and size: steel wire rope diameter, nylon rope diameter, rope construction, and whether the fairlead is used for mooring, towing, or replacement.

Step 3: Confirm rope lead direction, relative rope angle, shipside opening, freeboard deck arrangement, and whether the upper roller is required by the vessel drawing.

Step 4: Confirm seat structure, welded interface, hull / bulwark reinforcement, installation clearance, roller removal space, and maintenance access.

Step 5: Confirm material requirement: C-Mn steel, mild steel, stainless steel, or project-specific material grade; confirm shaft, bush, roller, and frame material allocation if required.

Step 6: Confirm surface treatment, coating system, inspection scope, NDT requirement, class certificate requirement, quantity, delivery destination, and required delivery time.

Step 7: Provide GA drawing, shipside arrangement drawing, existing fairlead photo, rope path sketch, or replacement dimensions if available.

Structure

Type C five-roller frame | Three vertical rollers | Two horizontal rollers including upper roller | Shipside seat / welded frame | Rope-contact roller surfaces | Roller shafts and retaining parts | Bulwark / freeboard deck installation interface | Shop primer or specified surface treatment

Rope Guidance, Roller & Installation Advantages

• The Type C arrangement uses three vertical rollers and two horizontal rollers to guide rope entry from multiple directions, which is useful at shipside mooring or towing stations where line direction can change during operation.
• The upper horizontal roller helps control the rope path within the fairlead opening and can reduce the risk of rope riding out of the guide path when the vessel arrangement and lead angle are correct.
• Roller contact reduces sliding friction compared with a fixed surface, but roller rotation, shaft alignment, bush condition, lubrication or bearing design, and maintenance access should be checked for actual service performance.
• Smooth roller surfaces and dressed rope-contact edges help reduce local wear on steel wire ropes and nylon ropes. Final rope life also depends on rope construction, load, line angle, surface finish, and maintenance condition.
• The welded seat and frame transfer rope reaction forces into the shipside or freeboard deck structure; local reinforcement, weld detail, and hull opening should be checked by the shipyard or design office.
• Different material options can be discussed, but the exact material grade for roller, frame, shaft, bush, and retaining parts should be confirmed before production and certificate preparation.
• Class inspection, material certificate, dimensional inspection, NDT, and additional testing can be arranged according to project requirement and agreed inspection scope.

Custom Attributes

• Standard: CB/T 3062-2011 → use when the shipyard, owner, or design drawing specifies CB/T roller head fairlead arrangement.
• Type: Type C with upper roller → five-roller universal fairlead configuration for shipside rope guidance.
• Roller Arrangement: 3 vertical + 2 horizontal rollers → supports multi-direction rope leading around the fairlead opening.
• Rope Compatibility: steel wire rope 19.5–68 mm / nylon rope 36–100 mm from supplied data → final rope selection should be checked with the vessel rope arrangement.
• Installation: shipside / freeboard deck / bulwark seat → welded interface, structural reinforcement, opening size, and maintenance clearance should be confirmed.
• Material: C-Mn steel / mild steel / stainless steel → exact grade and component allocation should be confirmed before quotation.
• Surface Treatment: Sa 2.5 blasting + epoxy shop primer / polished / galvanized / customized → final coating follows vessel specification or customer requirement.
• Load Data: SWL not provided in the supplied table → do not mark SWL until confirmed by official standard table, project calculation, or approved drawing.
• Certificate Requirement: available according to order scope → class certificate, material certificate, maker certificate, and witness inspection should be confirmed before production.

How It Works

Mooring or towing rope approaches the shipside fairlead → Rope enters between the vertical and horizontal rollers → Rollers rotate and guide the rope path → Upper roller helps keep the rope within the controlled opening → Local reaction force is transferred through the welded seat and shipside structure

Applications

Commercial ships | Naval vessels when specified by drawing | Offshore support vessels when approved by project requirement | Shipside mooring stations | Towing rope guide positions | Freeboard deck rope openings | Newbuilding and replacement projects

Certifications & Advantages

Certificates can be arranged according to project requirement, inspection scope, material traceability, and class society approval procedure.

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate.

Drawing & Photos

FAQ

Q1: What is the difference between Type C five-roller fairlead and a simple roller fairlead?

A1: Type C combines three vertical rollers and two horizontal rollers, including an upper roller, to guide ropes through a controlled shipside opening. It is more suitable where the rope path can vary and the vessel drawing requires multi-direction rope guidance.

Q2: Can this fairlead be used for both steel wire rope and nylon rope?

A2: Yes, the supplied table lists steel wire rope diameters from 19.5 to 68 mm and nylon rope diameters from 36 to 100 mm. The final selection should still confirm rope construction, rope diameter, line angle, design load, roller size, and shipside arrangement.

Q3: Can we mark SWL on this fairlead based on the supplied table?

A3: The supplied table does not include SWL values, so SWL should not be marked from this data alone. Load marking should be confirmed according to the official standard table, project calculation, approved drawing, and agreement between the user and manufacturer.

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