It may be noted that the manila ropes are more durable and stronger But if it is done, it reduces the external wearīetween the rope and the grooves of its sheaves. The cotton ropes are very soft and smooth. The hemp ropesĪre suitable only for hand operated hoisting machinery and as tie ropes The lubrication also makes the rope moisture proof. Lubricated with a tar, tallow or graphite. In order to minimise this defect, the rope fibres are Some sliding of the fibres, causing the rope to wear and chafe When the hemp and manila ropes are bent over the sheave, there is The hemp ropes have less strength as compared to manila ropes. Very flexible and possesses poor mechanical properties.
Since the hemp and manilaįibres are rough, therefore the ropes made from these fibres are not Materials such as hemp, manila and cotton. The ropes for transmitting power are usually made from fibrous Metres apart, while the wire ropes are used when the pulleys are up to The fibre ropes operate successfully when the pulleys are about 60 The ropes drives use the following two types of ropes : 1. It would result in excessive belt cross-section. If large amounts of power are to be transmitted, by the flat belt, then Two pulleys are not more than 8 meters apart. Transmission of moderate power from one pulley to another when the It may be noted that the use of flat belts is limited for the The rope drives are widely used where a large amount of power is toīe transmitted, from one pulley to another, over a considerable To study various Stresses in wire ropes,
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