DIN 81906 Mooring Warping Roller for Ship Mooring Equipment | Single Shipside Fairlead Roller

DIN 81906 Mooring Warping Roller for Ship Mooring Equipment | Single Shipside Fairlead Roller

Product Overview

The DIN 81906 mooring warping roller is a single roller fairlead component used on sea-going and inland vessels to guide mooring ropes during berthing, shifting, and harbor mooring operations. It provides a rounded rotating contact surface so that the rope can change direction with less local rubbing against deck or shipside structures.

This product is selected by DIN 81906 nominal size, rope tensile force reference, roller diameter, installation arrangement, material requirement, surface treatment, and certificate scope. The supplied product name refers to a casting steel warping roller; however, the final material grade and whether the roller follows cast steel, nodular cast iron, stainless steel, or other project-specified material should be confirmed before quotation and production.

Quick Specifications

• Standard: DIN 81906-1999 → reference for warping roller designation, assembly structure, main dimensions, and nominal size selection.

• Product type: Single mooring warping roller → used as a rotating rope guide, not as a lifting, pulling, towing, or winch product.

• Nominal size range: 1 / 2 / 3 / 5 / 8 / 12 / 20 / 32 → selected according to standard nominal number and vessel mooring arrangement.

• Rope tensile force reference: 10 to 320 kN → used as a selection basis and should not be directly converted into SWL, MBL, test load, or breaking load without project approval.

• Roller diameter d1: 160 to 560 mm → affects rope contact radius, rope lead arrangement, and available installation space.

• Approx. roller weight: 12 to 580 kg → useful for packing, handling, installation planning, and freight estimation.

• Surface treatment: Sa 2.5 blasting + epoxy shop primer, galvanized, polished, or customized finish → final coating should follow vessel specification.

• Customization: Material, surface treatment, certificate scope, and matching pedestal arrangement can be discussed according to project requirement.

Main Technical Parameters

Main webpage parameters for DIN 81906 mooring warping roller. Dimensions are in mm unless otherwise stated. The load column below is treated as rope tensile force / standard selection reference, not as an automatically declared product SWL.

Selection & Inquiry Guide

Step 1: Confirm DIN 81906 nominal no. 1, 2, 3, 5, 8, 12, 20, or 32 according to vessel drawing and mooring rope arrangement.

Step 2: Confirm rope tensile force reference, rope type, rope diameter, lead angle, installation position, and whether the roller is used as a replacement part or newbuilding item.

Step 3: Confirm matching arrangement: single roller only, shipside / deck edge installation, or use together with a conical pedestal such as DIN 81907 when specified by the project drawing.

Step 4: Confirm material requirement: mild steel, C-Mn steel, stainless steel, cast steel, nodular cast iron, or project-specified material grade.

Step 5: Confirm surface treatment: Sa 2.5 blasting + epoxy shop primer, galvanizing, polished stainless finish, final paint system, or other coating requirement.

Step 6: Confirm certificate scope before quotation: maker certificate, material certificate, class certificate, witness inspection, or approval according to project requirement.

Step 7: Provide quantity, delivery destination, required delivery time, installation drawing, and reference photo if available.

Structure

Casting roller body | Rope-contact groove / rounded contact surface | Central shaft / pedestal connection area | Bush / sleeve arrangement | Grease nipple and maintenance point | Fasteners and washers | Surface protection

Design, Casting & Engineering Advantages

• The single rotating roller helps guide the mooring rope direction and reduce direct rope rubbing against fixed ship structures during mooring operations.

• The rope-contact surface should be dressed and smoothed after casting or machining to reduce sharp local contact and help protect mooring ropes.

• The larger roller diameter range allows selection according to rope path, space limitation, and standard nominal number rather than using one oversimplified model for all vessels.

• Rotation, bush condition, lubrication access, and fastening condition are important inspection points because the product works as a rope guide under repeated contact.

• The installation foundation, deck edge support, or pedestal structure should be checked by the shipyard or design office according to the rope lead direction and local hull structure.

• Material and certificate scope can be arranged according to order requirement, but the exact material grade must be confirmed before final datasheet or production release.

Custom Attributes

• Standard: DIN 81906-1999 → use when the shipyard or owner specification requires DIN warping roller dimensions.

• Nominal No.: 1 / 2 / 3 / 5 / 8 / 12 / 20 / 32 → select according to standard table, rope arrangement, and available installation space.

• Roller No.: Single roller → suitable for a single rotating rope-contact point in the mooring line path.

• Rope Tensile Force Reference: 10 to 320 kN → selection reference only; final SWL or approval load should be confirmed by project calculation or class requirement.

• Material: Mild steel, C-Mn steel, stainless steel, cast steel, nodular cast iron → final grade and standard compliance to be confirmed before quotation.

• Surface Treatment: Sa 2.5 blasting + epoxy shop primer / galvanized / polished / customized → choose according to vessel coating specification and corrosion environment.

• Matching Pedestal: DIN 81907 conical pedestal can be considered when specified → pedestal interface and installation drawing should be confirmed.

• Certificate Requirement: Available according to project scope → class certificate, maker certificate, or material certificate should be agreed before order.

How It Works

Mooring rope approaches the roller → Rope contacts the rounded rotating surface → Roller turns with rope movement → Local rubbing is reduced → Load path is transferred through the roller support / pedestal to the vessel structure → Inspection and lubrication are carried out during service

Applications

Sea-going vessels | Inland vessels | Mooring stations | Shipside fairlead arrangements | Deck edge rope guidance | Harbor mooring | Vessel shifting operations | Replacement of DIN 81906 warping rollers

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: Is the DIN 81906 rope tensile force the same as product SWL?

A1: No. The supplied table gives a rope tensile force / selection reference. It should not be directly written as SWL, MBL, breaking load, or test load without project calculation, vessel arrangement review, and approval requirement.

Q2: Can this roller be used together with a DIN 81907 conical pedestal?

A2: It can be considered when the vessel drawing or project specification requires a matching conical pedestal arrangement. The pedestal interface, installation foundation, and local reinforcement should be confirmed by drawing.

Q3: What should be confirmed before quotation?

A3: Confirm DIN 81906 nominal no., rope arrangement, installation position, material grade, surface treatment, certificate scope, quantity, delivery destination, and required delivery time. A vessel drawing or replacement photo is helpful for avoiding wrong selection.

Drawing of DIN81906 Casting Steel Mooring Warping Roller