Single-Roller Pedestal Fairlead with Cleat | Ship Mooring and Towing Line Guide (CB/T 436 Type B)

Single-Roller Pedestal Fairlead with Cleat | Ship Mooring and Towing Line Guide (CB/T 436 Type B)

Product Overview

The CB/T 436 Type B pedestal roller fairlead with cleat is a deck-mounted single-roller rope guide used to control the lead of mooring or towing lines at ship deck stations. The rotating roller is specified as a CB/T 3861 standard roller, while the pedestal and cleat-type rope-control structure support the line path and transfer local reactions into the deck foundation.

The supplied range covers nominal roller diameters from 150 to 450 mm, with reference rope sizes for fiber rope, Malina rope, and 6×24 or 6×37 steel wire rope. These rope sizes are reference compatibility data and are not the fairlead SWL or the rope breaking load. Final selection should also confirm the project design load, line direction, deck reinforcement, welding details, roller rotation, shaft and bearing arrangement, material allocation, coating system, and class inspection scope.

Quick Specifications

• Product type: Pedestal-mounted single-roller fairlead with cleat → guides the line through a controlled deck lead position.
• Standard and type: CB/T 436-2000 Type B → supplied configuration uses a CB/T 3861 standard roller.
• Nominal roller diameter: 150 to 450 mm → initial size selection follows rope type, rope diameter, vessel arrangement, and approved drawing.
• Reference rope range: Fiber rope 32 to 80 mm, Malina rope 45 to 95 mm, and steel wire rope ranges according to construction → reference only, not a declared SWL.
• Roller weight: 24.8 to 310.0 kg → relevant to shaft support, removal access, handling, and maintenance planning.
• Pedestal weight: 129 to 452 kg → relevant to transport, deck foundation, welding sequence, and installation handling.
• Manufacturing focus: Smooth weld transitions, dressed rope-contact surfaces, roller alignment, and free rotation → helps reduce local abrasion and line chafe.
• Load basis: No SWL is included in the supplied parameter table → design load, line angles, supporting deck strength, and certificate scope must be confirmed for each project.

Main Technical Parameters

Main webpage selection data are shown below. Rope diameters are reference values in mm. Steel wire rope data refer to GB/T 8918 ropes with a stated strength grade of 1,570 MPa in the supplied table.

Note: The reference rope table does not establish the fairlead SWL. The design line load and the strength of the pedestal, cleat structure, welds, and supporting deck must be confirmed separately.

Selection & Inquiry Guide

Step 1: Confirm CB/T 436-2000 Type B and select the nominal CB/T 3861 roller diameter from 150 to 450 mm according to the vessel drawing.

Step 2: Provide rope type, rope construction, rope diameter, rope MBL, operating line load, and expected line speed; use the supplied rope table only for initial compatibility checking.

Step 3: Confirm the approach and departure directions of the line, expected side lead, deck position, nearby equipment clearance, and the intended function of the cleat-type rope-control feature.

Step 4: Confirm pedestal foundation, deck reinforcement, weld detail, roller centerline, shaft-removal space, lubrication access, and inspection access before production.

Step 5: Confirm the exact material for the pedestal, roller, shaft, cleat, and rotating interface; do not assume every listed material option applies to every component.

Step 6: Confirm surface treatment, quantity, class society requirement, inspection and test scope, material certificates, destination, required delivery time, and provide a standard drawing, GA drawing, or reference photo if available.

Structure

Single CB/T 3861 roller | Pedestal support structure | Cleat-type rope-control feature | Roller shaft and rotating interface | Deck-welded base | Smooth rope-contact surfaces | Lubrication access to be confirmed | Specified coating system

Rope Guidance, Fabrication & Installation Advantages

• The rotating roller changes the line direction with rolling contact, helping reduce sliding friction and local wear compared with a fixed edge.
• The cleat-type feature helps control the line position around the single roller; it should not be assumed to replace a bollard, bitt, or other dedicated line-securing fitting unless confirmed by the standard drawing and vessel design.
• The roller diameter range and the separate reference tables for fiber, Malina, 6×24, and 6×37 wire ropes support initial selection by actual line construction rather than by nominal diameter alone.
• Welded surfaces, roller edges, and rope-contact transitions should be ground and dressed smoothly to reduce sharp contact and help protect the line.
• Roller shaft alignment and the rotating interface should be controlled so the roller turns freely under the intended line path without local binding.
• The pedestal transfers fairlead reactions into the deck structure; deck reinforcement, weld size, load direction, and local structural approval remain vessel-specific engineering items.
• Galvanizing or stainless-steel finishing should be applied only where compatible with the selected component materials, shaft fits, rotating surfaces, and shipyard welding interface.

Custom Attributes

• Standard: CB/T 436-2000 → supplied standard designation for the Type B single-roller fairlead with cleat.
• Type: Type B → configured with a CB/T 3861 standard roller according to the supplied product information.
• Roller Diameter: 150 / 200 / 250 / 300 / 350 / 400 / 450 mm → select by rope data, line path, installation space, and approved vessel drawing.
• Rope Reference: Fiber / Malina / 6×24 SWR / 6×37 SWR → reference diameter compatibility only; not a load rating.
• Load Definition: Project design load to be confirmed → no fairlead SWL is provided in the supplied table.
• Material: Mild C-Mn steel / stainless steel / cast steel / cast iron options stated → exact material allocation for each component requires confirmation.
• Installation: Deck welded pedestal → foundation, reinforcement, welding procedure, alignment, and access should be confirmed by drawing.
• Surface Treatment: Sa 2.5 blasting + epoxy shop primer as reference → galvanizing or other coating follows project and component compatibility requirements.
• Certificate Requirement: Available according to project scope → material traceability, maker documentation, class inspection, and witness testing should be agreed before quotation.

How It Works

Mooring or towing line approaches the fairlead → The line contacts the rotating single roller → Roller rotation guides the change in line direction and reduces sliding contact → The cleat-type feature helps control lateral line position → Reactions transfer through the pedestal and welded base into the reinforced deck structure

Applications

Ship mooring stations | Approved towing line guide positions | Tugboats | Workboats | Coastal vessels | Inland vessels | Service ships | Newbuilding and replacement projects

Certifications & Advantages

Material certificates, maker documentation, dimensional records, inspection reports, class witnessing, and other certificates can be arranged according to project requirement and the agreed order scope. Certificate availability is subject to material traceability, inspection procedure, test requirement, and class approval.

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

Drawing & Photos

FAQ

Q1: How should the correct roller diameter be selected?

A1: Select the nominal roller diameter using the vessel drawing, line type, rope construction, rope diameter, operating lead direction, and available deck space. The reference rope table supports initial selection but does not replace a load calculation or approved arrangement drawing.

Q2: Can the cleat feature be used as the main line-securing point?

A2: This should not be assumed. The cleat-type feature is part of the fairlead rope-control arrangement. Any line-securing duty must be confirmed from the official standard drawing, design load, vessel mooring or towing plan, and class approval.

Q3: What information is required before quotation?

A3: Confirm standard and type, roller diameter, rope type and size, rope MBL, design line load, line directions, installation position, deck foundation, material allocation, shaft and rotating arrangement, surface treatment, certificate scope, quantity, destination, delivery time, and provide the vessel drawing or reference

Main technical Parameter:

Drawing of CB/T 436 Type B Ship Pedestal Roller Fairlead With Cleat Ship Towing Equipment