• Watertight Screw-Type Anchor Chain Releaser for 28, 32 & 34 mm Chain | CB/Z 887-2007
Watertight Screw-Type Anchor Chain Releaser for 28, 32 & 34 mm Chain | CB/Z 887-2007

Watertight Screw-Type Anchor Chain Releaser for 28, 32 & 34 mm Chain | CB/Z 887-2007

Product Details:

Place of Origin: China
Brand Name: Zhongyuan Marine Equipmen
Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate
Model Number: Standard or Customized

Payment & Shipping Terms:

Minimum Order Quantity: 1 Unit
Price: Based on quotation
Packaging Details: Export standard pallet or customized packing
Delivery Time: Based on project requirements
Payment Terms: T/T, L/C
Supply Ability: Customized production based on project requirements
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Detail Information

Technical Standard: CB*887 Nominal Chain Diameter: 28mm, 32mm And 34mm
Materials: C-Mn Steel, Stainless Steel Hydraulic Test Pressure: 0.4Mpa
Surface Treatment: Sandblasting To S2.5 + One Layer Of Epoxy Shop Primer, Galvanized, Polished, Customized Surface Treatment Available. Classification Certificates: CCS, NK, BV, ABS, DNV-GL, LR, KR, IRS, RS, Etc.
Highlight:

CB 887 Cable Clench Anchor Releaser

Product Description

Watertight Screw-Type Anchor Chain Releaser for 28, 32 & 34 mm Chain | CB/Z 887-2007

 

Product Overview

The CB/Z 887-2007 watertight screw-type anchor chain releaser is a mechanical chain-end securing and controlled-release assembly. The watertight configuration uses a release hook, operating shafts, trapezoidal screw, slider, locking parts and a packed stuffing-box arrangement so the release mechanism can be operated through the installation boundary while maintaining the specified sealing function.

This page covers the 28 mm, 32 mm and 34 mm watertight configurations defined by CB/Z 887-2007. Selection and manufacture should be checked against the applicable standard drawing, actual chain-end connection, installation interface, operating direction, available clearance and approved project documentation. The non-watertight configuration is a separate arrangement and is not represented by the dimensional table below.

 

Quick Specifications

• Product type: watertight screw-type anchor chain releaser → secures the chain end in normal condition and provides a controlled mechanical release function.

• Standard: CB/Z 887-2007 → manufacturing dimensions, watertightness, inspection and quality requirements on this page are based on this standard only.

• Applicable anchor chain: 28 / 32 / 34 mm → discrete standard sizes; select the exact size from the approved chain and installation drawing.

• Watertight configuration: packed stuffing-box sealing around the operating shaft → provides the sealing interface required for the watertight type.

• Watertightness requirement: stuffing-box assembly to withstand not less than 0.4 MPa static water pressure without leakage.

• Operating mechanism: trapezoidal screw + slider + release hook → manual shaft rotation produces controlled hook disengagement.

• Standard thread sizes: Tr 24×5-7 for 28 mm chain; Tr 26×5-7 for 32 / 34 mm chain → key machining and assembly-control dimensions.

• Reference mass: 23 / 28 / 28 kg for 28 / 32 / 34 mm watertight configurations → useful for installation handling and packing.

 

Main Technical Parameters

CB/Z 887-2007 watertight configuration. Dimensions are in mm. Values in parentheses are reference dimensions.

Chain Dia.

H

h

b

L

B

t

Thread D

d

l

Mass (kg)

28 170 65 60 (500) (200) 10 Tr 24×5-7 18 45 23
32 180 70 70 (510) (210) 10 Tr 26×5-7 18 45 28
34 180 70 70 (510) (210) 10 Tr 26×5-7 18 45 28

 

Selection & Inquiry Guide

• Step 1: Confirm CB/Z 887-2007 watertight screw-type configuration and the required 28 / 32 / 34 mm anchor-chain size.

• Step 2: Confirm the chain-end connection, installation boundary, H / h / b / L / B interface dimensions, shaft direction and available operating clearance from the approved drawing.

• Step 3: Confirm the watertightness test requirement, customer / class / third-party witness scope and required test documentation.

• Step 4: Confirm the component material schedule, material traceability, packing specification, lubrication requirement and protective coating.

• Step 5: Provide quantity, application vessel type, installation position, drawing or reference photo, delivery destination, required delivery time and approval-document requirements.

 

Structure

Main body | Release hook | Large shaft | Small shaft | Locking catch | Compression nut | Compression sleeve | Packing | Stuffing-box body | Bush | Trapezoidal screw | Slider

 

Manufacturing & Technical Quality Requirements

• Dimensional control: H, h, b, L, B, t, d and l dimensions, together with the specified trapezoidal thread, shall follow the CB/Z 887-2007 configuration and controlled production drawing.

• Thread and sliding parts: the trapezoidal screw, mating thread, slider and shaft fits shall be machined and assembled so movement is smooth and free from binding; burrs and harmful sharp edges shall be removed.

• Watertight assembly: packing, compression sleeve, compression nut and stuffing-box components shall be fitted correctly so the watertight configuration meets the specified sealing requirement.

• Watertightness test: the stuffing-box assembly shall withstand not less than 0.4 MPa static water pressure without leakage. Test execution and witnessing shall follow the approved inspection scope.

• Operating function: release hook, shafts, screw and slider shall operate through the intended locking and release sequence without sticking. Opening / locking direction marking shall be clear after assembly.

• Material control: component materials shall comply with the material schedule and referenced material standards specified by CB/Z 887-2007. Material substitutions require project approval before manufacture.

• Surface and lubrication: friction, thread and bearing-contact areas shall receive suitable lubrication; exposed surfaces shall receive the protective treatment required by the standard and approved project coating system.

• Final inspection: verify material documentation, main dimensions, appearance, assembly condition, operating flexibility, watertightness, marking and delivery documentation before release.

 

Custom Attributes

• Standard: CB/Z 887-2007 → design, manufacture and acceptance basis for this page.

• Configuration: Watertight screw-type → packed stuffing-box arrangement is included; non-watertight type is separate.

• Chain Diameter: 28 / 32 / 34 mm → standard discrete size series shown on this page.

• Watertightness: ≥0.4 MPa static water pressure, no leakage → applies to the watertight sealing arrangement.

• Thread: Tr 24×5-7 or Tr 26×5-7 → selected according to chain size and standard configuration.

• Materials: Component-specific carbon steel, stainless steel and copper-alloy materials according to CB/Z 887-2007 → final part-by-part grades follow the controlled BOM.

• Operation: Manual screw-and-slider release → operating direction, hook engagement and available clearance must match the approved installation drawing.

• Inspection: Dimensional, visual, functional and watertightness checks → witness and documentation scope according to order requirement.

• Certificate Requirement: Available according to project requirement → maker certificate, material documents and class / third-party inspection scope to be agreed before production.

 

How It Works

Anchor chain end is connected to the release hook → Locking parts and screw mechanism retain the hook → Operator turns the operating shaft in the marked release direction → Trapezoidal screw drives the slider → Release hook disengages in a controlled sequence → Assembly is inspected and reset after operation

 

Applications

Watertight anchor-chain end release arrangements | Special-vessel anchoring systems | Drawing-controlled installations | Newbuilding projects | Repair and replacement projects specified to CB/Z 887-2007

 

Certifications & Advantages

Certificates and third-party inspection can be arranged according to project requirement, agreed inspection scope, material traceability and approval procedure. They are not included by default.

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

 

Drawing & Photos

Watertight Screw-Type Anchor Chain Releaser for 28, 32 & 34 mm Chain | CB/Z 887-2007

FAQ

Q1: Which chain sizes are covered by the watertight configuration on this page?

A1: The standard sizes shown here are 28 mm, 32 mm and 34 mm. They are discrete sizes, so selection should match the actual chain and approved installation drawing rather than treating 28–34 mm as a continuous range.

Q2: What is the key acceptance requirement for the watertight type?

A2: The stuffing-box sealing arrangement shall withstand not less than 0.4 MPa static water pressure without leakage. The agreed inspection plan should define witnessing and documentation requirements.

Q3: What information is required before manufacture?

A3: Confirm chain size, installation drawing, chain-end connection, boundary dimensions, shaft direction, operating clearance, material-document requirement, coating, watertightness inspection scope, quantity and delivery requirement., test pressure and witness scope, material / coating requirements, quantity, destination, and delivery schedule.

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