'Speech' Wire rope Electric Hoists
Product Details
Testing :
Every hoist unit before dispatch is tested at 125% of the rated load capacity on single fall of rope. Only after all the components pass
the rigorous inspection tests, the hoist is approved for dispatch.
| Salient Features of SPEEMECH Electric Hoists |
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Motor : The motor (10) is three phases squirrel cage, conical rotor type working on 440 volts. 50 c/sec. A.C. supply. This motor is specially designed for hoist and crane and is insulated by class F' type of insulation according t9o B.S. : 2613. The starting and stalling torques of this motor are 220% and 290% of the full load torque. The motor is rated at 40% ED. |
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Brake :
The axial movement of the rotor is one of the characteristics of the conical rotor type of motor. This characteristic is taken advantage of in the actuation of the brake. When the motor is started the rotor (11) is axially pulled into the magnetic centre of the stator and the brake is released. As soon as the current is cut off the brake spring (9) presses the brake disc (12) against the cover and the brake is applied. The braking torque is 100% above the motor torque at the rated load. The maintenance and adjustment of the brake us very simple due to system and can be done without removing any part. The brake disc and brake end cover (3) are both made of high grade cast iron and the brake lining is of Ferrodo' type. |
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Gear Box :
The great box (2) is made out of high grade cast iron. The precision spur gears (4) are machined from alloy steel and are fitted with ball/needle roller bearings. The gear box is filled with grease. |
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Rope Drum :
The rope drum (5) is rolled welded and precision machined. This rope drum is supported on large diameter roller bearings (6) on both ends and the drive is through internal gears. The ample drum diameter ensures the best possible working condition for the wire rope. |
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Rope Guide :
The rope guide (7) is made of high grade cast iron. The rope tightener (8) is built-in in the rope guide itself. This rope guide moves on the drum like a nut and prevents the rope from overriding and loosening. |
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Rope :
Generally 6 x 37 construction fibre core, pre-formed type, ungalvanised wire rope is supplied. (Galvanised and steel core wire ropes can also be supplied, if specifically asked for.) |
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Main Housing :
All hoist parts are enclosed in the main housing (1) thus forming a better looking integral unit. The main housing like the rope drum is also of rolled and welded construction, equipped with mounting bracket. |
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Limit Switches :
Every hoist is provide with built-in limit switches (16) to control the top and bottom position of the hook. Tappets (13 & 15) can be adjusted to any position in between the range provided. These limit switches are actuated by the rope guide. |
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Control:
The hoist is controlled by a pendant push button station. Supply to the pendent push button is of 110 volts as per IS specification. |
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Microspeed : |
- Country:India
- telephone:91-912225406100
| The axial movement of the rotor is one of the characteristics of the conical rotor |
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