70–132mm Roller Bar Chain Stopper | JIS F2031 Anchor Chain Load Holding for Ship

Product Overview

The roller bar type chain stopper is a critical safety component in anchoring systems, used to hold the anchor chain and transfer load from the windlass to the ship structure.

Designed in accordance with JIS F2031-1998, it features a roller and dog mechanism for reliable chain locking under load.

The design considers chain lead angle from hawse pipe to windlass, ensuring smooth engagement and reduced impact load.

Quick Specifications

• Chain Size: 70–132 mm → Defines anchor chain compatibility
• Standard: JIS F2031-1998 → Marine design compliance
• Function: Load Holding → Transfers load from windlass
• Side Plate: Reinforced → Improves structural strength
• Dog: Forged steel → High hardness and wear resistance
• Bearing: Copper bush → Improves durability
• Roller Shaft: Lubricated → Reduces wear
• Operation: Counterweight / Hydraulic cylinder → Enables opening and closing of heavy dog
• Material: High-strength steel → Heavy-duty performance
• Optional: Chain hook → Additional securing function

Main Technical Parameters

Selection Guide

Step 1 – Select Chain Size → 70–132 mm based on anchor chain

Step 2 – Confirm Load Requirement → Must match anchor load

Step 3 – Confirm Chain Angle (in/out) → Ensure alignment with hawse pipe and windlass

Step 4 – Confirm Height and Length → Fit deck layout and installation space

Step 5 – Optional Hydraulic Cylinder → For heavy-duty operation and safety

Step 6 – Optional Chain Hook → Additional securing requirement

Structure & Components

Reinforced side frame | Roller | Forged dog | Lubricated shaft | Copper bush bearing | Counterweight | Hydraulic cylinder (optional)

Custom Attributes

• Chain Size: 70–132 mm → Compatibility
• Load Function: Anchor holding → Safety
• Side Plate: Reinforced → Strength
• Dog: Forged → Wear resistance
• Bearing: Copper bush → Durability
• Operation: Counterweight / Hydraulic → Easy handling
• Material: High-strength steel → Heavy-duty
• Optional: Chain hook → Extra locking
• Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate

Inquiry Guide

Provide chain size, chain lead angle, deck dimensions, load requirement, and preferred operation method (manual or hydraulic).

How It Works

The anchor chain passes over the roller and is locked by the dog. The counterweight or hydraulic cylinder assists opening and closing, ensuring safe and efficient operation.

Applications

Ship anchoring system | Heavy-duty chain holding

Certifications & Advantages

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate; reinforced structure, forged dog, hydraulic-assisted operation, optimized chain alignment.

Drawing & Photos

GA drawing | Installation layout | Product photos

Ordering

MOQ:1 | Delivery:60–120 days | Customization available

FAQ

Q1: How is the heavy dog operated?

A: It can be operated by counterweight or hydraulic cylinder for safer and easier handling.

Q2: Why use forged dog?

A: Provides higher hardness, wear resistance, and longer service life.

Q3: What parameters are required for selection?

A: Chain size, chain lead angle, deck space, and load requirement are key factors.

Q4: Why is a chain stopper required in the anchoring system?

A: It transfers the anchor load from the windlass to the ship structure, protecting the windlass from continuous heavy load.

Q5: What makes this stopper suitable for heavy-duty operation?

A: Reinforced side plates, forged pawl, and copper bush bearings ensure high strength, wear resistance, and long service life.