Bolted Dog-Type Anchor Chain Stopper for 17–68 mm Chain | JIS F 2002-Type, Cast Steel or Ductile Iron

Product Overview

This bolted dog-type anchor chain stopper uses the dimensional and track-arrangement concept of the legacy JIS F 2002 dog-type chain cable compressor, while the body can be supplied in cast steel or ductile iron instead of the original gray-cast-iron material basis. The unit incorporates a chain track, hinged dog, hinge pin and locking pin, and is installed on a prepared foundation by bolts rather than by directly welding the stopper body to the deck structure.

The bolted foundation is a key feature for projects where the complete stopper may need to be removed for inspection, repair or replacement. The supplied size series covers nominal sizes 19 to 68 for anchor chains from 17 to 68 mm, with Class A and Class B track arrangements selected according to the required joining-shackle / Kenter-shackle passage. Because the offered body material is changed from the original standard material basis, final material grade, foundation bolts, structural suitability, load basis, inspection scope and acceptance should follow the approved project drawing and specification.

Quick Specifications

• Installation: foundation-bolted mounting → allows the complete stopper to be removed without cutting the body from the deck foundation, subject to the approved bolt and foundation design.

• Design basis: JIS F 2002-type dog chain cable compressor geometry → used as a legacy dimensional and arrangement reference rather than a claim of unchanged material conformity.

• Body material options: cast steel or ductile iron → exact grade, mechanical properties and material certification to be confirmed for the project.

• Nominal size range: 19 to 68 → corresponds to applicable anchor chain diameters from 17 to 68 mm in the supplied dimensional table.

• Class arrangement: Class A / Class B → selected according to the required orientation of the joining or Kenter shackle through the chain track.

• Operating arrangement: hinged dog + locking pin → provides direct mechanical restraint across the chain track after the chain is positioned.

• Foundation interface: body, bolts, foundation plate and local deck reinforcement form the load-transfer path → all should be checked on the approved installation drawing.

• Reference mass: original legacy-design values are retained only in Backend Engineering Reference → final product mass must be recalculated / confirmed for the selected cast steel or ductile iron body.

Main Technical Parameters

Core selection and installation dimensions from the supplied JIS F 2002-type dimensional series. Dimensions are in mm.

Selection & Inquiry Guide

• Step 1: Confirm the JIS F 2002-type bolted dog arrangement, nominal size 19 to 68, and Class A or Class B according to the required shackle passage.

• Step 2: Provide anchor chain diameter, chain grade if known, joining / Kenter shackle details, chain-centerline position and required shackle orientation through the track.

• Step 3: Confirm body material: cast steel or ductile iron. State the required material grade, low-temperature / impact requirement if any, material certificate level and approval requirement.

• Step 4: Provide the approved foundation drawing showing bolt-hole pattern, bolt specification, foundation plate, deck reinforcement, installation height, chain lead and operating clearance.

• Step 5: Confirm coating system, casting inspection, dimensional inspection, NDT requirement, material traceability, maker documentation and any class / third-party witness scope.

• Step 6: Provide quantity, vessel type, newbuilding or replacement purpose, installation position, delivery destination, required delivery time and existing-equipment photos where available.

Structure

Cast steel or ductile iron body / chain track | Hinged dog | Hinge pin | Locking pin | Washer | Split pin | Foundation-bolt interface | Project-specified protective coating

Bolted Installation, Material & Engineering Advantages

• Bolted foundation mounting is the principal structural feature of this design and permits removal of the complete stopper for workshop repair or replacement, provided the foundation and bolt pattern remain suitable.

• Cast steel can be selected where the project requires a tougher cast body and project-specific inspection / traceability; the exact grade and acceptance criteria must be agreed before manufacture.

• Ductile iron can be selected where a nodular-iron casting is preferred; the exact grade, mechanical properties and service suitability must be confirmed by the project specification.

• Class A and Class B track arrangements accommodate different joining-shackle / Kenter-shackle passage orientations and should be selected from the actual chain connection rather than only from nominal chain diameter.

• The chain-contact track, dog edges and pin interfaces should be free from harmful burrs, sharp local edges and assembly interference that could damage the chain or prevent correct locking.

• The foundation bolts, foundation plate, deck structure and local reinforcement are part of the load-transfer path; the bolted installation should therefore be reviewed as a complete structural interface.

• Changing the body material does not by itself establish a new SWL, proof load or breaking load. Any load rating, design verification or test requirement must be based on the approved project design and acceptance criteria.

Custom Attributes

• Design Basis: JIS F 2002-type legacy geometry → retained for dimensional compatibility and bolted arrangement; not presented as unchanged material conformity.

• Product Type: Dog-type anchor chain stopper / chain cable compressor → foundation-mounted device for mechanically securing the anchor chain.

• Installation: Bolted foundation → bolt layout, foundation plate and deck reinforcement to be confirmed from the approved drawing.

• Nominal Size: 19 / 22 / 25 / 28 / 32 / 36 / 40 / 44 / 48 / 52 / 56 / 60 / 64 / 68 → selected according to chain diameter and installation drawing.

• Class: A or B → selected according to joining / Kenter shackle passage orientation.

• Body Material: Cast steel or ductile iron → exact grade and mechanical-property requirements to be confirmed before production.

• Material Status: Project-specific material update → the original JIS F 2002 material basis is not used as the offered body material.

• Surface Treatment: Blast cleaning + project-specified marine coating → final system to follow the selected material and vessel / shipyard coating requirement.

• Load Rating: To be confirmed → no SWL, proof load or breaking load should be inferred from nominal chain size or legacy reference mass.

• Certificate Requirement: According to project requirement → maker, material, NDT or class documents are subject to the agreed inspection scope.

How It Works

Anchor chain is aligned in the chain track → The hinged dog is rotated across the chain → Locking pin and retaining parts secure the dog in the closed position → Chain movement is mechanically restrained through the stopper body and bolted foundation → Retaining parts are released and the dog is opened before chain movement resumes

Applications

Replacement of bolted dog-type anchor chain stoppers | Drawing-specified anchoring systems | Retrofit projects requiring removable foundation-mounted equipment | Newbuilding applications where the JIS F 2002-type bolted arrangement is specifically approved

Certifications & Advantages

Certificates and inspection documents can be arranged according to project requirement, agreed material traceability, inspection scope and classification-society approval procedure. They are not automatically included unless stated in the purchase order.

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

Drawing & Photos

FAQ

Q1: What is the main installation feature of this dog-type anchor chain stopper?

A1: The body is mounted to a prepared foundation by bolts rather than being permanently welded to the deck. This allows the complete unit to be removed for inspection, repair or replacement, subject to the approved foundation and bolt design.

Q2: Can the body be supplied in cast steel or ductile iron?

A2: Yes, as a project-specific material update to the legacy JIS F 2002-type geometry. The selected grade, mechanical properties, casting quality, material documentation and structural suitability must be confirmed before production. The modified material should not be described as unchanged JIS F 2002 material conformity.

Q3: What information is required before quotation?

A3: Confirm nominal size, chain diameter, Class A or B, shackle details, body material, material grade, foundation bolt pattern, deck support, coating, inspection / certificate scope, quantity and delivery requirements. Provide the installation or replacement drawing whenever available.

delivery. Provide the foundation drawing with bolt pattern and structural support.