Durham Lifting Tiger SS11 Detail
Durham Lifting Tiger SS11 3tDurham Lifting Tiger SS11 3t with Spark Resistant FittingsDurham Lifting Tiger SS11 3t with Load LimiterDurham Lifting Tiger SS11 Label and Torsion Brake DetailDurham Lifting Tiger SS InternalsDurham Lifting Tiger SS11 106A4506 Handle

Tiger SS11 Subsea Lever Hoist

Durham Liftings Tiger SS11 Subsea Lever Hoist, ranging from 800kg – 20000kg, has been designed and developed over a number of years for use primarily in the Subsea environment.  The original & proven Subsea Lever Hoist – constantly developed and improved. DNV GL Verification tested according to NORSOK R-002

The SS11 has new Patent protected brake pawl design that ensures there is constant engagement of the ratchet brake whilst still allowing for the free-wheeling facility to position the load chain.

The design and anti-corrosion features incorporated in the SS11 hoist range give it significant safety advantages over standard lever hoists, making the hoist the ideal tool for all Marine and extreme applications. Developed initially with the goal of giving key stakeholders within the Oil and Gas Industry a hoist that could be certified for safe use Subsea whilst meeting all the requirements of IMCA DO28 Rev. 1 “Guidance notes for offshore lever hoists”, the SS11 meets and exceeds these requirements, as well as conforming to standards such as BS EN 13157: 2004+A1:2009, ANSI/ASME B30.21, AS1418.2 and SANS 1636.

Tiger 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
  • Range from 800kg – 20000kg
  • Available with forged clevis adaptor components
  • Patented Quad Cam Pawl System
  • Certified and proven track record
  • Double switch brake mechanism
  • One piece construction pinion gear
  • Marine specific friction discs
  • Meets and exceeds IMCA DO28 Rev 1 guidance notes for offshore lever hoists
  • Light load protection at 2% of the rated capacity
  • Lifts, holds and lowers the load at 2% of rated capacity
  • No requirement for preload tension to activate the ratchet mechanism
  • Fully Corrosion protected body and components to ensure reliable long term use
  • Adaptable to use both inverted and horizontally
  • Brake chamber protection from outside contamination
  • High performance premium grease
  • Stainless steel fixings and fasteners
  • -40°C to +50°C Operating temperature range
  • Adjustable chain end anchorage specifically designed to the contours of the hoist
  • Also available with stainless steel load chain or spark resistant hooks
  • Meets or exceeds all international standards

Durham Lifting Tiger SS11 3t with Load LimiterDurham Lifting Tiger SS11 3t with Spark Resistant FittingsDurham Lifting Tiger SS11 3t

Technical Table

DIMENSIONS (MM) LOAD CHAIN STANDARD HOL (M) MASS @ STD HOL (KG) MASS FOR EXTRA METRE HOL (KG) TECHNICAL DRAWING
Product Code Capacity (Tonne) Effort (KG) A B C D E F1 F2 DIA NO. OF FALLS
SS-0080 0.8 23 128 243 295 158 99 28 45 6.3 1 3 9.0 0.9  SS-0080
SS-0150 1.5 26 154 370 320 172 104 34 51 7.1 1 3 12.5 1.1  SS-0150
SS-0300 3.0 38 182 370 400 195 108 36 56 10.0 1 3 22.0 2.2  SS-0300
SS-0600 6.0 40 242 370 570 195 108 49 70 10.0 2 3 34.5 4.3  SS-0600
SS-1000 10.0 47 379 370 630 195 108 54 87 10.0 3 3 55.0 6.5  SS-1000
SS-1500 15.0 44 566 370 840 195 108 59 81 10.0 5 3 128.0 10.8  SS-1500
SS-2000 20.0 49 470 370 1050 250 160 81 110 10.0 6 3 174.0 13.1  SS-2000

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. 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.

Multi-Immersion
After successfully completing a series of independent third party verification and testing programmes to established international standards, the latest being 3rd party multi-immersion tests at Catapult ORE in the UK, Tiger can state that the SS11 range of lever hoists 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.

Safety Brake
Durham Lifting Tiger SS11 Label and Torsion Brake Detail

The SS11 comes with a unique dual brake mechanism that automatically engages when the lever hoist feels the slightest resistance or load. This key feature means that the SS11 will raise, hold and lower the lightest of loads without slipping. The two stage process protects against accidental light load failures by putting the hoist into neutral whilst under load. The bonded friction discs are free of asbestos and achieve highly efficient braking. Light Load

Protection
The unique brake system designed for the SS11 guarantees a light load protection at 2% of the rated capacity.

Quad Cam Type Brake Pawls
This latest development in brake efficiency guarantees permanent engagement of at least one of the two reciprocating cam pawls fitted to the SS11, 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.

Insert Image

Brake Efficiency: Tiger uniquely uses an 8 point multi start thread pinion shaft which has measurably increased the efficiency in brake reaction times.

Overload Protection
The SS11 lever hoist 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.

Hooks
Durham Lifting Tiger EZ Check 3 Point Hook

Durham Lifting’s Tiger Hooks incorporate the latest Patent Pending (GB1420387.1) “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. Also available with spark resistant hooks.

One Piece Construction Pinion Gears
SS11 gearboxes contain one piece pinion gears. This revolutionary process in gear manufacturing uses drop-forged raw material, precision machined and heat treated with precise ratios between teeth and body.

Anti-Corrosion Protection
Critical internal components are protected by our OCP (Organic Compound Protection) finish giving unprecedented long term reliability. OCP has been proven to be effective through 1000 hours of the ASTM B117 Salt Spray Test. The SS11 is NOW externally finished with our own anti-corrosion finish giving the SS11 body over 1000 hours of protection under the same test criteria, whilst maintaining a high degree of impact protection.

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

Brake Chamber Protection
Precisely engineered side plates and components are protected by a full gasket giving the SS11 brake chamber and contents maximum protection from external contamination.

Load Chains
Durham Lifting only use the highest quality Tiger alloy, calibrated load chains in Grade 80 (T) or 100 (V) conforming to EN818-7 and ISO 16872. The SS11 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.

Handle

The SS11 handle which interfaces with the operator is ergonomically designed for efficiency and ease of use and reduces the likelihood of a gloved hand from slipping off the end of the handle. It also helps prevent the use of unauthorised extension/cheater bars that could facilitate an overload on a non-overload protected SS11.

Durham Lifting’s Tiger lever hoist handles are ultra-strong, with strengthening side ribs.
Durham Lifting Tiger SS11 106A4506 HandleThis special feature:

  • Protects against impact damage
  • Protects the label
  • Increases its robustness and longevity
  • Eliminates torsion

Protection
The SS11 has OCP protection on all the internal parts including load and hand chains ensuring over 1000 hours continuous protection. Stainless steel fittings are used throughout the hoist and these ensure the initial capital outlay of purchasing the SS11 is protected by allowing the statutory inspections and re-certifications to be easier and also help with the overall aesthetics being maintained in an “as new” condition.

Finish
The SS11 is finished in our high quality white Akzo Nobel powder coat paint offering excellent additional corrosion protection. (Data sheets available on request.)

Forgings
Durham Lifting Tiger 0429-forging

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

Chain End Anchorage
Durham Lifting Tiger Chain End Anchorage

Tiger have incorporated the ultimate safeguarding of a single point failure mode as described in IMCA DO28 Rev. 1 Note 7.2 by installing a new specially designed adjustable chain end stop profiled to fit the contours of the hoist body. This offers complete assurance to the operator, whilst maintaining the flexibility of “freewheeling” the chain to any required starting position.

Chain Guide
Durham Lifting Tiger Chain End Stop and Chain GuideDurham Lifting Tiger Chain End Stop

Specifically designed to guide the load chain safely onto or off the load sheave without snagging or jamming, the fluted chain stripper allows the safe use of the SS11 when used in any orientation.

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.

Salt Spray – Submersion Test Programme
The SS11 range of hoists has successfully been type tested to over 1000 hours continuous exposure to an industry generated test programme that was specifically drawn up and agreed upon by a group of independent professionals incorporating ASTM B117 environmental conditions. This programme included over 50 individual load tests on the same hoist of varying weights at various timescales, to fully challenge the SS11.