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SKU 211-55-1
Height of Lift


The SS12 is manufactured from the highest quality steel materials precisely machined in our own factory, offering a lightweight, compact and rugged construction, producing an exceptionally strong product resistant to impact damage.  The especially low headroom allows for easy installation in the most restricted environments. The unique design features - including our patented Quad Cam Pawl System, along with the anti-corrosion properties incorporated in this range, give it significant safety advantages over standard chain blocks and make the SS12 chain block the ideal tool for salt water use with low 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.

The SS12 is suitable for use in multi-immersion applications providing the timescales, pre-use testing, maintenance and service requirements as detailed in relevant Tiger documents are strictly adhered to.


  • Suitable for use in multi-immersion applications
  • Range from 500kg – 20000kg
  • Tested and certified for “fleeting”, “drifting” and “cross-hauling” applications up to 45° from the vertical without deration
  • Drop forged & heat treated alloy hooks
  • Guaranteed 2% light load protection
  • Proof tested to 1.5 times rated capacity
  • Individual spares readily available
  • Available with load bearing swivel hooks to meet relevant standards i.e. AS 1418.2
  • DNV GL Verification tested according to NORSOK R-002
  • Corrosion protected load and hand chain
  • Rugged steel body construction, yet lightweight and portable
  • Stainless steel fixings and fasteners
  • Heat treated alloy steel triple spur gears and pinion shaft
  • Can be chained to any height of lift to meet your exact requirements
  • Also available with stainless steel chain or spark resistant hooks
  • Meets or exceeds all international standards
  • Available with slipping clutch overload protection
  • Marine specific friction discs
  • Double cover protection for brake chamber
  • Patented Quad Cam Pawl System
  • -40°C to +50°C Operating temperature range
  • Marine chain bags available on request
  • Fully corrosion protected body and components to ensure reliable long term use
  • Available with forged clevis adaptor components

Build info


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% of the rated capacity, which exceeds the requirements of the current applicable standard.

Environmental Testing and Multi-Immersion:

After successfully completing a series of independent third party verification and testing programmes to beyond 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 Manual are strictly adhered to. This takes our testing far beyond the requirements of ASTM B117 environmental conditions with the SS12 range having over 1300 hours continuous exposure to an industry generated test programme in a real life offshore and subsea environment. This ensures the performance of the SS12 has been fully challenged in natural environments similar to the conditions it will be exposed to.

Patent Protected Quad Cam Brake Pawl System:

This patented development in brake efficiency guarantees permanent engagement of at least one of the two reciprocating cam pawls fitted to the SS12, ensuring the pawl only just clears the ratchet wheel, with the minimum of clearance as required under BS 4898:1973. 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.

Brake Efficiency:

Tiger uniquely uses an 8 point multi start thread pinion shaft which has measurably increased the efficiency in brake reaction times - up to 50% measurable difference compared with longitudinal 4 point pinion threads.

Chain End Stops:

Will hold a load of at least 2.5 times the rated capacity when supporting the full load without restraint from other components e.g. brake or gearing as required in many international standards. This prevents accidents, by acting as a stop when the lift length of the load chain is exceeded when lowered. 

Overload Protection:

The SS12 chain block can be fitted with a slipping clutch overload mechanism to protect it from overload. When the load limit is exceeded, the clutch in the chain wheel will slip, allowing the handle to be operated whilst not engaging the gear box. This prevents further lifting of the load, though lowering is still possible. The SS12 with overload protection is DNV GL Verification tested according to NORSOK R-002.

Safety Brake:

The highly efficient and fully corrosion protected twin pawl brake 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% load of the rated capacity.   

Marine Friction Discs:

Developed and designed for Subsea use creating a highly efficient, reliable braking surface for use in the most extreme conditions.

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 fittings available (for units up to 10t capacity).

Lifting at Angles:

The SS12 range of chain blocks fitted with the patented protected Quad Cam Brake System has undergone a full and comprehensive testing regime that was drawn up by industry specialists and Tiger’s mechanical engineers to provide evidence that these units can be safely used for “fleeting”, “drifting” and “cross-hauling” applications up to 45° from the vertical without deration. Note: All such operations should be carried out in accordance with manufacturer’s instructions and fully risk assessed by a competent person.

With a conventional twin pawl brake mechanism (teardrop design) failure can occur if the pawl spring erodes, fractures or a shock load bounces the pawls out of the ratchet gear. Without the spring these systems rely on gravity keeping the pawls engaged and are flawed when the hoist is used at angles away from the vertical.

Hand Wheel:

For chain blocks to be used up to an angle of 45 degrees, it’s critical that the hand chain leaves and enters the hand wheel without twisting, snagging or jamming. Thanks to our specially designed deep-profile chain block hand wheel this is achievable as it helps to seat the chain no matter what angle or direction of pull.

High Performance Premium Grease:

Load carrying ability, mechanical stability, corrosion protection, water resistance and increased operating temperature ranges are all improved by the using only the very best lubricant.

Load Chains:

Tiger only use the highest quality alloy, calibrated load chains in Grade T or VH 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.

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.

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.

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.

Protection and Finish:

Critical internal components as well as the load and hand chain are protected by our OCP (Organic Compound Protection) finish giving unprecedented long term reliability. Stainless steel fittings are used throughout the hoist. These ensure the initial capital outlay of purchasing the SS12 is protected by allowing the statutory inspections and re-certifications to be easier and also help with the overall aesthetics of the hoist being maintained in an “as new” condition. The SS12 is finished in our high quality white Akzo Nobel powder coat paint offering excellent additional corrosion protection and a high degree of impact protection. (Data sheets available on request.)


Our hooks incorporate our latest Patent Pending “EZ Check” feature which allows operators and inspection engineers to easily check to see if the hoist has been previously overloaded or shock loaded by simply measuring between the triangle of pop marks.

Our drop forged and heat treated alloy hooks are furnished with heavy duty spring latch kits that fully engage into the recessed nose of the hook safeguarding the load when side loading of the latch occurs and 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.

Available with hooks that swivel under the full working load limit, to meet relevant standards i.e. AS 1418.2. Also available with spark resistant hooks.


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

Combination Trolley and Block

The top hook can be replaced by a competent person so the SS12 can be directly fitted to our beam trolley range of the equivalent capacity achieving the lowest possible headroom.


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% rated capacity

Due to our policy of continual product development, dimensions, weights and specifications may change without prior notice. Please check with your Tiger sales team when ordering.

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