Durham Lifting Tiger SS12 5t Unit
Durham Lifting Tiger Bottom Hook Recessed ForgingsDurham Lifting Tiger Deep Profile Hand WheelDurham Lifting Tiger OCP InternalsDurham Lifting Tiger SS12 3t New Label

Tiger SS12 Corrosion Resistant Chain Block

Durham Lifting’s Tiger SS12, the ideal block for salt water use, is manufactured from the highest quality steel materials, offering a lightweight, compact and rugged construction, producing an exceptionally strong product resistant to impact damage. With the added advantages of having been fully protected against corrosion using Tiger’s OCP “Organic Corrosion Protection” formula that gives over 1000 hours continuous protection under ASTM B117 salt spray conditions. The exceptional short head room allows for easy installation where every centimetre must be achieved. Using only the highest quality materials precisely machined in our own factory, the SS12 is the ideal block for salt water use with less maintenance and servicing costs. These units meet and exceed all the requirements within BS EN 13157: 2004+A1:2009, ANSI/ASME B30.16, AS1418.2 and SANS 1594.Durham Lifting Atex EX yellow black white suroundTiger Logo

Product Description

Main Features

  • Suitable for Use in Multi-Immersion Applications
  • DNV GL Verification Tested According to NORSOK R-002
  • Available with Slipping Clutch Overload Protection
  • Fully Corrosion Protected Body and Components to Ensure Reliable Long Term Use
  • Range from 500kg – 20000kg
  • Over 1000 Hours Continuous Protection
  • Corrosion Protected Load and Hand Chain
  • Marine Specific Friction Discs
  • Available with Forged Clevis Adaptor Components
  • Rugged Steel Body Construction
  • Lightweight and Portable
  • Double Cover Protection for Brake Chamber
  • Drop Forged & Heat Treated Alloy Hooks
  • Stainless Steel Fixings and Fasteners
  • Patented Quad Cam Pawl System
  • Guaranteed 2{e36f5a91c998de831b71657463ebcebc0f1922fe4adb9f636df27af744ef8d81} Light Load Protection
  • Heat Treated Alloy Steel Triple Spur Gears and Pinion Shaft
  • -40°C to +50°C Operating Temperature Range
  • Proof Tested to 1.5 Times Rated Capacity
  • Can be Chained to Any Height of Lift to Meet Your Exact Requirements
  • Marine Chain Bags Available on Request
  • Individual Spares Readily Available
  • Also Available with Stainless Steel Load Chain or Spark Resistant Hooks
  • Meets or Exceeds all International Standards
Tiger 1.5t SS12 Spark Resistant Hooks

Tiger 1.5t SS12 Spark Resistant Hooks

Technical Table

SCB-0050 0.5 21 93 66 305 52 78 24 38 6.3 1 3 10.5 1.9  SCB-0050
SCB-0100 1.0 25 93 66 340 63 87 28 45 6.3 1 3 11.5 1.9  SCB-0100
SCB-0150 1.5 32 98 73 385 78 102 34 51 7.1 1 3 16.0 2.1  SCB-0150
SCB-0200 2.0 34 101 79 420 87 113 35 53 8.0 1 3 20.0 2.4  SCB-0200
SCB-0300 3.0 38 109 84 550 98 157 36 56 10.0 1 3 30.5 3.2  SCB-0300
SCB-0500 5.0 37 101 79 575 122 209 49 70 8.0 3 3 37.5 5.2  SCB-0500
SCB-1000 10.0 40 109 84 660 153 263 54 87 10.0 3 3 64.0 7.5  SCB-1000
SCB-1500 15.0 41 109 84 840 225 378 59 81 10.0 5 3 128.5 11.8  
SCB-2000 20.0 43 161 90 1050 148 360 81 110 10.0 6 3 178.5 14.2  SCB-2000
SCB-3000 30.0 42 220 220 1200 388 388 91 135 10.0 10 3 201 23.8

Each unit comes fully certified with a test certificate or an EC Declaration of Conformity stating compliance with the essential health and safety requirements of the Machinery Directive 2006/42/EC. This document clearly states the proof test at 1.5 times the rated capacity and the light load test of 2{e36f5a91c998de831b71657463ebcebc0f1922fe4adb9f636df27af744ef8d81} of the rated capacity, which exceeds the requirements of the current applicable standard.

After successfully completing a series of independent third party verification and testing programmes to established international standards, our latest being 3rd party multi-immersion tests at Catapult ORE in the UK, we can state that the SS12 range of chain blocks is suitable for use in multi-immersion applications providing the timescales, pre-use testing, maintenance and service requirements as detailed in Tiger document Multi-immersion Instruction Document 201603 are strictly adhered to. Marine Friction Discs: Developed and designed for Subsea use creating a highly efficient, reliable braking surface for use in the most extreme conditions.

Quad Cam Brake Pawl System
This latest development in brake efficiency guarantees permanent engagement of at least one of the two reciprocating cam pawls fitted to the SS12. But most importantly, in the unlikely event of a pawl spring failure, this new design will ensure the brake is still fully functional and the load is sustained without damage to the mechanism.

Safety Brake
The highly efficient and fully corrosion protected brake system works instantly when the operation is stopped and securely holds the load. Loads are lowered under perfect control, allowing for precise operations. The SS12 easily passes the “brake lock out test” as per BS 3243:1990 with a 2{e36f5a91c998de831b71657463ebcebc0f1922fe4adb9f636df27af744ef8d81} load of the rated capacity.

Load Chains
Tiger only use the highest quality alloy, calibrated load chains in Grade 80 (T) or 100 (V) conforming to EN818-7 and ISO 16872. These chains have been protected using OCP protection without any loss of mechanical performance. The SS12 comes as 3.0mtr HOL as standard but can be chained up to whatever length is required. Stainless steel load chain available on request for certain capacities.


Hook Detail

Hook Detail

Drop forged and heat treated alloy hooks are furnished with heavy duty latch kits that fully engage into the nose of the hook offering maximum load security. The swivel hooks are attached to the yoke using high grade nuts & bolts allowing for complete inspection during any statutory inspection or written scheme maintenance. The entire hook fitting has been protected using OCP or stainless steel fixtures and fittings. Also available with spark resistant hooks.




Recessed forgings offer full protection to the load chain anchor bolts on all our bottom hooks.

The SS12 has OCP protection on all the internal parts including load and hand chain ensuring over 1000 hours continuous protection.
Durham Lifting Tiger OCP Internals
The SS12 is finished in our high quality white Akzo Nobel powder coat paint offering excellent additional corrosion protection. (Data sheets available on request.)

Double Cover Protection
Both the hand chain wheel cover and the ratchet brake cover are designed to offer protection to the brake chamber in the harshest environments from foreign objects.

High Performance Premium Grease
Load carrying ability, mechanical stability, corrosion protection, water resistance and increased operating temperature ranges of -40°C to +50°C are all improved by the using only the very best lubricant.

Mechanical Efficiency
All major components are heat treated and precisely machined to ensure long term smooth operation. High gear ratios keep physical effort to a minimum whilst complying to all the relevant standards.

Adaptor Components
Drop forged adaptor maintaining maximum strength. 360° Rotation and 180° Pivot for Maximum Flexibility. Tested and certified to 4:1 factor of safety.

Self-locking (safety) hook, clevis shackle, reevable egg (master) link or sling hook fitting available.

SS12 chain block with clevis adaptor and self-locking (safety) hook, reevable egg (master) link and sling hook fittings.

Durham Lifting Tiger 106a4465Durham Lifting Tiger 106A4460

Chain Carriers
All our SS12 chain blocks are available with chain bags on request to fit the exact amount of chain specified. Designed to carry and hold the exact length of load chain required for the operation. Incorporating a stainless steel frame work and heavy duty PVC flexible bag reinforced by webbing with eyelet drain holes for an easy transfer through the splash zone. These chain bags prevent loose chain from getting snagged during lifting or lowering operations and protect any loose chain during transit to and from the operational site.

The SS12 has undergone a full test program that includes:

  • Type Testing
  • Ultimate strength test, at least 4 times the Working Load Limit (WLL)
  • Continuous cyclic testing of over 1500 cycles
  • Chain end anchorage test, passing at least 2.5 times the WLL without any restriction of the brake or gears Test on every hoist
  • Proof loading at 1.5 times the rated capacity
  • Light load testing at maximum of 2{e36f5a91c998de831b71657463ebcebc0f1922fe4adb9f636df27af744ef8d81} rated capacity