100–450mm Open Type Casting Steel Roller Fairlead with Foundation for Ship

Product Specification

100–450mm Open Type Casting Steel Roller Fairlead with Foundation for Ship Mooring

Product Overview

Open type casting steel roller fairlead is designed for guiding mooring ropes at the deck edge with flexible rope entry.

The structure allows multiple rollers mounted on a base without top plate, suitable for side mooring and complex rope lead angles.

This model focuses on structural strength, load transfer reliability and long-term durability, and is different from SWL-certified engineering fairlead selection models.

Quick Specifications

• Roller Diameter: 100–450 mm → Determines rope compatibility
• SWL Range: 108–1767 kN → Load reference
• Safety Factor: 1.41–1.56 → Structural reliability
• Pin Shaft Material: Carbon steel (Grade 25) → Tensile strength ≥460 MPa
• Bearing Type: Bush → Load transfer and wear resistance
• Surface: Ground finish → Protects rope
• Structure: Open type → Flexible rope entry
• Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate

Main Technical Parameters

Engineering Design Logic

Calculation load is taken as 2 times the rope breaking load to ensure fairlead integrity even if rope fails.

Load transfer path: Roller → Bush → Pin Shaft → Foundation.

Pin shaft is the primary load-bearing component subjected to bending moment from rope tension.

Structural Optimization

Pin shaft extends into foundation for better load transfer and strength.

Increased shaft diameter improves strength and rope life by increasing D/d ratio.

Optimized clearance between shaft and bush ensures lubrication and smooth rotation.

Structure

1 Countersunk Screw | 2 Roller Cover | 3 Washer | 4 Bush | 5 Pin Shaft | 6 Roller Body | 7 Set Screw | 8 Nut | 9 Set Screw | 10 Grease Cup | 11 Thread Sleeve | 12 Plug

Quality Control

Casting parts shall be free from defects such as cracks, shrinkage and inclusions.

Rope contact surfaces must be ground smooth.

Rotating parts must operate flexibly.

Selection Guide

Step 1 – Select roller diameter → Based on rope size

Step 2 – Confirm rope type → Wire / fiber

Step 3 – Confirm load requirement → Refer SWL

Step 4 – Confirm installation position

Step 5 – Confirm certification requirement

Custom Attributes

• Open structure → Flexible rope entry
• Heavy-duty pin shaft → High strength
• Bush bearing → Smooth rotation
• Ground surface → Protects rope
• Casting steel → Durable structure

Inquiry Guide

Please provide rope diameter, rope type, required load, installation position and certification requirement.

How It Works

Rope is guided by rollers and load is transferred through bush and pin shaft to foundation, ensuring safe operation.

Applications

Ship mooring | Deck edge guiding | Side mooring

Certifications & Advantages

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate → Ensures compliance with major classification societies

Drawing & Photos

General arrangement drawing and product photos available

Ordering

MOQ: 1 Unit | Delivery: 30–60 days | Customization available

FAQ

Q1: What is Open Type Fairlead?

A: Open type fairlead refers to a structure without a top plate above the rollers. Two, three or four rollers are mounted on a foundation base, and the upper side remains open for flexible rope entry.

Closed type fairlead includes a top plate restricting rope movement (e.g. JIS F2014 Type B and D).

Q2: Why Open Type Design?

A: Flexible rope entry from outside deck; suitable for multi-direction mooring; modular roller arrangement.

Q3: What is function of Foundation Height?

A: Foundation height is used to adjust rope lead angle, reduce bending stress, avoid deck contact and minimize rope wear.

Q4: Why is pin shaft critical?
A: It bears bending load from rope tension and determines structural safety.

Q5: Why is 2× breaking load used?
A: To ensure fairlead remains intact even if rope fails.

Q6: How to improve rope life?
A: Increase D/d ratio and ensure smooth roller surface.