Safety Brake:
The highly efficient and fully corrosion protected brake systems works instantly when the operation is stopped and securely holds the load. Loads are lowered under perfect control, allowing for precise operations. The TCB passes easily the “brake lock out test” as per BS 3243 with a 2% load of the rated capacity.
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.
Lifting at Angles
The TCB 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” and “cross-hauling” applications up to 45°. Note: All such operations should be carried out in accordance with manufacturer’s instructions and fully risk assessed by a competent person.
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. Also available with stainless steel load chain.
Overload Protection:
If the chain hoist is fitted with a slipping clutch overload mechanism then it is protected from overload. When the load limit is exceeded, the clutch in the chain wheel will slip, allowing the hand wheel to be rotated whilst not engaging the gear box. The prevents further lifting of the load, though lowering is still possible.
Grease:
High performance premium quality grease allows the TCB Blocks to be certified for use within a temperature range of -40°C to +50°C, far exceeding the requirements of current standards.
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. This prevents accidents, by acting as a stop when the lift length of the load chain is exceeded when lowered.
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.
Convertibility
The TCB can be easily converted to have Load Limiters fitted. The top hook can be replaced by a competent person so the TCB can be directly fitted to our beam trolley range of the equivalent capacity achieving the lowest possible headroom.
Performance:
The TCB 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
Quad Cam Brake Pawl System
Specifically designed so there is always a permanent engagement of one of the reciprocal pawls in the ratchet wheel. Most importantly, in the unlikely event of a pawl spring failure, this new design ensures the brake is always fully functional and the load is sustained without damage to the mechanism. With a conventional twin pawl brake mechanism (tear drop) 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 reply on gravity keeping the pawls engaged and are flawed when the hoist is used at angles away from the vertical.
Finish
The TCB is finished in our high quality powder coat paint offering excellent corrosion protection.
Hooks
The hooks incorporated the Patent Pending "EZ Check" feature, which allows operator and inspection engineers to easily check if the hook is stretched from overloading or shock loading etc. by simply measuring measuring between the triangle of pop marks (see the Hook Spec. tab above). 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. Recessed forgings offer full protection to the load chain anchor bolts on all Tiger bottom hooks.
Brake Efficiency
Tiger uniquely uses an 8 point multi start thread pinion shaft which has measurably increased the efficiency in the brake reaction times.
Hand Wheel
For chain blocks to be used up to an angle of 45°, it's critical that the hand chain leaves and enters the hand wheel without twisting, snagging or jamming. Thanks to the 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.
