Zhongyuan Ship Machinery Manufacture (Group) Co., Ltd
| Nominal Chain Diameter | 50mm to 120mm |
| Payment Terms | T/T, L/C |
| Materials | C-Mn Steel, Stainless Steel |
| Delivery Time | Based on project requirements |
| Packaging Details | Export standard pallet or customized packing |
| Classification Certificates | CCS, NK, BV, ABS, DNV-GL, LR, KR, IRS, RS, Etc. |
| Surface treatment | sandblasting to S2.5 + one layer of epoxy shop primer, Galvanized, Polished, customized surface treatment available. |
| Supply Ability | Customized production based on project requirements |
| Technical Standard | CB/T 3143-2013 |
| Certification | CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate |
| Brand Name | Zhongyuan Marine Equipmen |
| Place of Origin | China |
| Model Number | Standard or Customized |
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Product Specification
| Nominal Chain Diameter | 50mm to 120mm | Payment Terms | T/T, L/C |
| Materials | C-Mn Steel, Stainless Steel | Delivery Time | Based on project requirements |
| Packaging Details | Export standard pallet or customized packing | Classification Certificates | CCS, NK, BV, ABS, DNV-GL, LR, KR, IRS, RS, Etc. |
| Surface treatment | sandblasting to S2.5 + one layer of epoxy shop primer, Galvanized, Polished, customized surface treatment available. | Supply Ability | Customized production based on project requirements |
| Technical Standard | CB/T 3143-2013 | Certification | CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate |
| Brand Name | Zhongyuan Marine Equipmen | Place of Origin | China |
| Model Number | Standard or Customized | ||
| High Light | Ship Mooring Equipment Cable Clench ，Watertight Dog Type Cable Clench | ||
Dog Type Cable Clench for Anchor Chain Dia.50–120mm | Marine Anchor Chain Release Device
Product Overview
CB/T 3143 watertight dog type cable clench is designed as a critical safety component for anchor chain release systems.
It is suitable for Grade 2 and Grade 3 anchor chains with diameters from 50 mm to 120 mm.
Equipped with O-ring sealing structure, it ensures watertight integrity of the chain locker under tested pressure conditions.
The device enables controlled holding and emergency release of anchor chain, protecting vessel safety under overload conditions.
Quick Specifications
Main Technical Parameters
| Nominal No. |
Chain Cable diameter |
L | B | L1 | B1 | L2 | D | H1 | H2 | n | Theoretical weight kg |
| 50 | 50 | 104 | 400 | 244 | 460 | 70 | 60 | 100 | 115 | 10 | 61 |
| 52 | 52 | 106 | 246 | 72 | 62 | 69 | |||||
| 54 | 51 | 112 | 435 | 252 | 486 | 74 | 64 | 120 | 72 | ||
| 56 | 56 | 116 | 256 | 78 | 67 | 105 | 76 | ||||
| 58 | 58 | 122 | 463 | 262 | 501 | 80 | 69 | 130 | 14 | 80 | |
| 60 | 60 | 125 | 265 | 83 | 71 | 110 | 82 | ||||
| 62 | 62 | 129 | 493 | 269 | 524 | 73 | 138 | 85 | |||
| 64 | 64 | 132 | 272 | 86 | 75 | 86 | |||||
| 66 | 66 | 139 | 520 | 281 | 542 | 91 | 78 | 140 | 90 | ||
| 68 | 68 | 79 | 92 | ||||||||
| 70 | 70 | 146 | 557 | 288 | 570 | 94 | 81 | 115 | 118 | 93 | |
| 73 | 73 | 149 | 97 | 84 | 94 | ||||||
| 76 | 76 | 158 | 593 | 300 | 594 | 102 | 88 | 120 | 155 | 95 | |
| 78 | 78 | 161 | 303 | 105 | 90 | 96 | |||||
| 81 | 81 | 167 | 610 | 309 | 628 | 107 | 93 | 125 | 165 | 96 | |
| 84 | 84 | 170 | 312 | 110 | 96 | 98 | |||||
| 87 | 87 | 181 | 690 | 325 | 660 | 115 | 100 | 175 | 100 | ||
| 90 | 90 | 183 | 327 | 117 | 103 | 106 | |||||
| 92 | 92 | 195 | 727 | 339 | 686 | 121 | 105 | 130 | 185 | 113 | |
| 95 | 95 | 198 | 342 | 124 | 108 | 119 | |||||
| 97 | 97 | 205 | 785 | 353 | 724 | 127 | 110 | 135 | 192 | 121 | |
| 100 | 100 | 208 | 356 | 130 | 113 | 140 | 150 | ||||
| 102 | 102 | 210 | 358 | 132 | 115 | 186 | |||||
| 105 | 105 | 221 | 853 | 37l | 770 | 137 | 118 | 18 | 214 | ||
| 107 | 107 | 225 | 374 | 140 | 120 | 257 | |||||
| 111 | 111 | 226 | 3i6 | 142 | 123 | 145 | 244 | ||||
| 114 | 114 | 246 | 917 | 398 | 810 | 150 | 127 | 225 | 289 | ||
| 117 | 117 | 248 | 152 | 130 | 327 | ||||||
| 120 | 120 | 253 | 403 | 157 | 133 | 150 | 372 |
Selection Guide
Step 1 – Select Chain Diameter → 50–120 mm based on anchor chain
Step 2 – Confirm Chain Grade → Grade 2 or Grade 3
Step 3 – Confirm Watertight Requirement → Required for chain locker sealing
Step 4 – Confirm Release Requirement → Emergency quick release needed
Step 5 – Confirm Pin Safety Logic → Controlled break at overload
Step 6 – Confirm Certification → Class society requirement
Structure
Body | Dog locking mechanism | Release pin | O-ring seal | Lubrication pin | Hammer release system
Custom Attributes
Inquiry Guide
Please provide chain diameter, chain grade, watertight requirement, and class certification requirement.
How It Works
The chain is locked by the dog mechanism. Under emergency, the pin can be released by hammer, allowing the chain to run out safely. The pin is designed to break under controlled overload, ensuring vessel safety.
Applications
Anchor chain locker | Emergency chain release system | Ship safety system
Certifications & Advantages
Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS; watertight tested, controlled release safety design, reliable locking mechanism.
Drawing & Photos
GA drawing | Installation layout | Product photos
Ordering
MOQ: 1 | Delivery: 30–60 days
FAQ
Q1: What is the function of the dog type cable clench?
A: It holds and releases anchor chain safely.
Q2: How does the safety pin work?
A: It breaks under 15–30% of chain breaking load to ensure emergency release.
Q3: Why watertight design?
A: To maintain chain locker sealing and prevent water ingress.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Seller
Year Established:
1990
Total Annual:
10,000,000-15,000,000
Employee Number:
>300
Ecer Certification：
Verified Supplier
Zhongyuan Ship Machinery Manufacture (Group) Co., Ltd. was founded in the 1990s and has developed into an integrated marine equipment manufacturer and project supply partner combining manufacturing, technical support, and export services. The group consists of four factories and one export trading c... Zhongyuan Ship Machinery Manufacture (Group) Co., Ltd. was founded in the 1990s and has developed into an integrated marine equipment manufacturer and project supply partner combining manufacturing, technical support, and export services. The group consists of four factories and one export trading c...
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