Tiger Lifting SS20 Tiger Corrosion Resistant Chain Block Instruction Manual
- June 9, 2024
- Tiger Lifting
Table of Contents
Tiger Lifting SS20 Tiger Corrosion Resistant Chain Block
Main Features
- Suitable for use in multi-immersion applications
- DNV GL Verification tested according to NORSOK R-002
- Range from 500kg – 30.0t
- Patented Quad Cam Pawl System – proven reliability
- Phosphor Bronze Bearings
- Tested and certified for “fleeting”, “drifting” and “cross-hauling” applications up to 45° from the vertical without deration
- Guaranteed 2% light load protection
- Fully Corrosion protected body and components to ensure reliable long-term use
- Over 1500 hours protection to ASTM B117 conditions
- Corrosion protected load and hand chain
- Double cover protection for brake chamber
- Marine chain bags available on request
- Available with slipping clutch overload protection
The SS20 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 listed below give it
significant safety advantages over standard chain blocks and make the SS20
chain block the ideal tool for saltwater 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. Tiger Hoists fitted
with overload limiters comply fully with NORSOK R-002.
- When fitted with load bearing swivel hooks, Tiger hoists comply fully with AS 1418.2
Key design features such as our patented brake pawls and deep pocket design hand wheel along with the full and comprehensive testing regime we have submitted our SS20 hoist to provide the evidence that allows us to state that these units can be safely used for “fleeting”, “drifting” and “cross-hauling” applications up to 45° from the vertical without deration.
With over 50 years of professional manufacturing experience, Tiger’s
commitment to innovation and customer satisfaction mean we will continue to
develop and improve our products by communicating and working with our
customers. The SS20 range of chain blocks incorporates our latest developments
and enhancements.
Our innovation, your safety
Instruction
Certification:
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:
Tiger Lifting commissioned ORE Catapult (a leading, independent, cross-
disciplined research and development organisation) to carry out a series of
saltwater multi-immersion tests on Tiger Lifting’s subsea lifting hoists.
These tests evaluated how several Tiger SS12 corrosion resistant chain blocks
stood up to a pre-determined multi-immersion trial (defined in test scope
document 2015/11646), specifically designed to replicate real life subsea
lifting scenarios. The successful results of this programme of tests are
documented and now form part of the product technical files.
Following on from the learnings of the successful test regime above and with
the subsequent years’ empirical evidence of SS12 hoists used in the field, the
SS20 model chain blocks were produced with several upgrades to the corrosion
protection and internal components to further improve and enhance the
performance of the Subsea hoist, including a new paint coating to ISO 12944
C5M and some key internal upgrades. These hoists have been suitably verified
for a 54 day multi-immersion period.
The successful completion of this comprehensive series of tests and product
development as detailed above, forms the collective evidence that allows Tiger
to state that the SS20 range of hoists are fit 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 followed.
We have also carried out intensive internal testing on components to ensure we achieved over 1500 hours protection to ASTM B117 conditions. This ensures the performance of the SS20 has been fully challenged in natural environments similar to the conditions it will be exposed to.
Brake Efficiency:
Tiger SS20 chain hoists utilise an 8 point multi-start thread pinion shaft
which doubles the lead distance, increasing the brake efficiency by 100% over
typical 4 point threaded shafts. With our fine manufacturing tolerances
between the pinion shaft thread and critical brake components we have
engineered out a known failure mode where contamination to the threads can
lead to brake failure or slippage.
Patent Protected Quad Cam Brake Pawl System:
Our patented Quad Cam Pawl System guarantees permanent engagement of at least
one of the two reciprocating cam pawls fitted to the SS20, 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 design will ensure the brake is still fully functional
and the load is sustained without damage to the mechanism.
Forgings:
Recessed hook yoke forgings offer full protection to the load chain anchor
bolts on all our bottom hooks. Precise tolerances in the bottom hook yokes
means foreign objects are restricted from entering the load sheave area
.
Bonded Marine Friction Discs
The bonded marine friction discs are free of asbestos and have been developed
and designed for subsea use creating a highly efficient, reliable braking
surface for use in the most extreme conditions. These models are supplied with
a grooved friction disc system which assist with dispersing salt water from
between key surfaces therefore eliminating failure through aquaplaning (where
a layer of water builds between brake surfaces leading to a loss of friction).
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.
Phosphor Bronze Bearings:
Ideally suited to subsea environments. The Tin content increases the corrosion
resistance and strength of the alloy, the Phosphorus increases the wear
resistance and stiffness of the alloy. Needle Bearings have been proven to be
unstable and unsuitable for offshore and marine environments.
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.
Hooks:
Our hooks incorporate our patented “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 corrosion protected or
stainless steel fixtures and fittings. Our latest latches incorporate a new
wing design making them easier to operate in the operation area (e.g. wet
gloved hands for offshore or subsea use).
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.
Chain Carriers:
All our SS20 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
framework 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.
Protection and Finish:
SS20 hoists have a distinctive body and hooks to clearly define use in a
marine environment.
Internal components are corrosion protected using our own unique formulation
giving unprecedented long-term levels of corrosion protection. Stainless steel
fittings are used throughout the hoist. These ensure the initial capital
outlay of purchasing the SS20 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.
We have carried out intensive internal testing on components to ensure we
achieved over 1500 hours protection to ASTM B117 conditions.
SS20 hoists are completed with a two-stage finish combining electroplating as
a base layer and then finished with a very hard-wearing sand texture powder
coating paint which offers excellent corrosion protection and high impact
protection.
The lessons learned from previous models have allowed us to once again raise
the bar with the SS20 in giving longer life corrosion protection ideally
suited for multi-immersion applications. Paint finish in accordance with
ISO12944 C5M.
Multi Fall Load Sheave Bearings:
We have incorporated DU® self-lubricating metal polymer bearings into our
multi chain fall load sheaves. Their success lies in the unique composite
bearing structure comprised of a steel backing for mechanical strength and a
porous sintered bronze interlayer impregnated with PTFE and lead for high wear
resistance and extremely low friction properties. This makes them ideally
suited to hoists used subsea. They provide improved energy efficiency due to
low friction of PTFE-enriched overlay and have an extended service life with a
strong wear-resistant bronze layer. There is zero maintenance as self-
lubricating bearings can operate perfectly dry but have greater reliability
with lubricant to avoid potential shaft/bearing seizure under boundary
conditions.
Combination Trolley and Block
The top hook can be replaced by a competent person so the SS20 can be directly
fitted to our beam trolley range of the equivalent capacity achieving the
lowest possible headroom.
Tiger ROV Chain Block
The Tiger ROV compatible chain block is available in various different
interface options all in accordance with BS ISO 13628-8:2002 ROV Interfaces on
Subsea production systems. Tested and finished in accordance with Annexes B &
K of BS ISO 13628-1:2005:
- Hydraulic Hot Stab connection dual port type A and B
- Rotary Torque Receptacle Classes 1,2 & 3
- D Handle, T-bar or Fishtail Direct Drive manual connection
- QD Direct Drive Couplings
Available as a 3.0 tonne (single fall of load chain), 6 tonne (2 falls), 8 tonne (3 falls), 10 tonne (3 falls), 15 tonne (5 falls) and 20 tonne single head (6 falls) capacity chain blocks, chained up to project specific heights of lift (H.O.L) that can be pre-set to meet the exact starting point required within the rigging drawings. Please see our separate technical sheet for more details.
Overload Protection:
The SS20 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 SS20 with overload protection is DNV GL
Verification tested according to NORSOK R-002.
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
our unique corrosion protection without any loss of mechanical performance.
The SS20 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.
Light Load Protection:
The SS20 brake system guarantees a light load protection at 2% of the rated
capacity.
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 SS20
easily passes the “brake lock out test” as per BS 3243:1990 with a 2% load of
the rated capacity.
High Performance Premium Grease:
We use new technology, wide temperature range, high performance premium
grease. It contains no heavy metals or other harmful additives making it more
environmentally friendly. This selection achieves the correct viscosity to
prevent the grease migrating from the area of application. Even when mixed
with 50% high water absorption it has excellent adhesion and no sign of
breakdown after 100,000 strokes and remains unchanged with no slump or
breakdown unlike other “premium” greases. 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.
Temperature Range:
Operating temperature range -40°C to +80°C – far exceeding the requirements of
current standards. Ultra-low operating temperature units also available as an
option (of -60°C to +80°C).
Lifting at Angles:
The SS20 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.
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).
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.
Performance:
The SS20 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
Home of the Tiger hoisting, winching, clamping and height safety ranges
Technical Data
Product Code
SCB- 0050
| Capacity (tonne)
0.5
| Effort (kg)
21
| Dimensions (mm)| Load Chain| Standard HOL (m)| Mass|
Mass for extra metre HOL (kg)
---|---|---|---|---|---|---|---
A
93
| B
66
| C
305
| D| E| F1| F2| Diameter
(mm)
| No. of
falls
| @ std HOL
(kg)
52 78 24 38 ⌀6.3 1 3
10.5 1.9
SCB-
0100
| 1.0| 25| 93| 66| 340| 63| 87| 28| 45| ⌀6.3| 1| 3| 11.5| 1.9
SCB- 0150| 1.5| 32| 98| 73| 385| 78| 102| 34| 51| ⌀7.1| 1| 3| 16.0| 2.1
SCB-
0200
| 2.0| 34| 101| 79| 420| 87| 113| 35| 53| ⌀8.0| 1| 3| 20.0| 2.4
SCB- 0300| 3.0| 38| 109| 84| 500| 98| 157| 36| 56| ⌀10.0| 1| 3| 30.5| 3.2
SCB-
0500
| 5.0| 37| 101| 79| 575| 122| 209| 49| 70| ⌀8.0| 3| 3| 37.5| 5.2
SCB- 0600| 6.0| 38| 109| 84| 635| 86| 220| 49| 70| ⌀10.0| 2| 3| 45.5| 5.3
SCB-
0800
| 8.0| 34| 109| 84| 610| 153| 263| 51| 78| ⌀10.0| 3| 3| 61.0| 7.5
SCB- 1000| 10.0| 40| 109| 84| 660| 153| 263| 54| 87| ⌀10.0| 3| 3| 64.0| 7.5
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-
3000
| 30.0| 42| 220| 220| 1200| 388| 388| 91| 135| ⌀10.0| 10| 3| 307.0| 23.8
See page 10 for more hook information
Hook Technical Data
Capacity (Tonnes)| Collar measurements (mm)| Hook
thickness at point shown in diagram (mm)| Hook throat Opening (mm)|
“EZ Check” measurement (mm)
---|---|---|---|---
a| b| c| d| e| f
0.5| 8| 13.5| 19| 15| 29| 47
1.0| 8| 13.5| 23| 17| 34| 52
1.5| 10| 15.5| 26| 21| 39| 59
2.0| 9| 17.5| 30| 22| 42| 64
3.0| 12.5| 20| 37| 32| 42| 76
5.0/6.0| 19| 30| 43| 36| 58| 86
8.0| 20.7| 33| 50| 43| 57| 110
10.0| 20| 33| 52| 48| 70| 121
15.0| –| 36| 67| 60| 65| 130
20.0| –| 48| 77| 72| 90| 162
SS20 chain blocks are fitted with our patented Tiger “EZ check” 3 point marking system. With this system a quick check that the A and B measurements are the same (as shown in the diagram below) will indicate if the hooks have stretched If A≦B the hook is fine; If A>B the hook needs to be replaced.
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
Our innovation, your safety
References
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