User`s manual

32
DESCRIPTION OF MAIN COMPONENTS
(see picture 1 for references)
HOISTING AND TRAVELING ELECTRIC MOTOR
(1-8) Three-phase asynchronous, designed for S3 intermittent duty, executed in compliance with European rules and regulations. Closed
mechanical protection so as to prevent dust and water from entering, wherever they may come from.
Flange-mounted application (B5 shape), on the outside of the hoist, therefore it benefits from a perfect cooling thanks to the frame’s fins.
Available with single polarity, for single speed hoists, with double polarity for double speed ones.
CLUTCH LOAD LIMITER
(2) Emergency device, works as a load limiter in the event of overloading [RES. 4.2.1.4. Enclosure I – Machinery Directive].]
Asbestos-free clutch disks.
BRAKE
(3) Load holding is guaranteed by a powerful disk brake assisted by a toroidal electromagnet which is fed at the same time as the motor is.
Designed for a braking torque which exceeds the necessary one by 60%, but which is adjustable according to the different requirements, it is
equipped with an easy system for the temporary compensation of the wear and tear of brake linings.
HOISTING REDUCER
(4) Compact parallel axles execution, with cylindrical gearing in alloyed, hardened and tempered steel, refaced and grinded fast gears,
supported by ball bearings and lubricated in oil bath. The frame is made of aluminum alloy to increase heat dissipation.
SPROCKET – CHAIN GUIDE
(puller/inserter) (5)
Thermally treated, it has five hollows which are machined using high-precision automatic machinery. It transmits motion to the chain
ensuring its optimal running. The chain guide guarantees the housing and the pulling of the chain’s links with respect to the sprocket’s
hollows, both while hoisting or lowering [RES. 4.1.2.4. Enclosure I Machinery Directive]
CHAIN
(6) Calibrated and made of high grade steel rod, of a special quality with high dynamic stability, 80 kg/mm2 minimum breaking load
and minimum elongation at fracture of over 10%. The safety factor of use is always above 5 [RES. 4.1.2.4. – Enclosure I Machinery
Directive]. The thermal and galvanic treatments it undergoes confer it high resistance to wear and tear, ageing and corrosion.
Pict. 1