What is slack side?
The slack side is the side where tension on a belt is low compared to the other side. In a flat belt drive, driver pulley pulls the belt through the bottom side and deliver it on the opposite side (upper side), so the top side is always loose. One of the reasons for doing so is to increase the angle of contact.
What is tight side and slack side?
Tight and slack side of a belt On the opposite section, the belt moves away from the driving pulley and is slightly relieved by its “pushing” effect. This belt section is called slack side. On the tight side, the belt moves towards the driving pulley; on the slack side, the belt moves towards the driven pulley!
What is slack belt?
On the opposite section, the belt moves away. from the driving pulley and is slightly relieved by its. “pushing” effect. This belt section is called slack side. ■ Note that on the slack side, the belt is also exposed.
What is tight side tension?
The section of the belt in which the. belt is strongly pulled towards the driving pulley and is. thus exposed to a large tensile load is referred to as the. tight side.
Why tight side of the belt should be at the bottom side of the pulley?
Answer. When we keep the tight side as the lower side then more area of belt makes contact with the pulley which is less likely to slip because of friction. So it is mostly arranged in such a way that the lower side of the belt (especially in case of flat belts) is the tight side.
What is belt and pulley?
Belt drives transfer movement from one rotating pulley to another, each held on a shaft . Shafts and pulley wheels can be made out of any material, whereas pulley belts are generally made from a soft, flexible material such as rubber. Grooves on the pulleys and belts help them to grip and turn.
What is V-belt drive?
A v-belt is a flexible machine element used to transmit power between a set of grooved pulleys or sheaves. They are characterized as belts having a trapezium cross-section. V-belts are the most widely used belt drives since their geometry causes them to wedge tightly into the groove as the tension is increased.
What are the tight and slack side of a belt drive?
When belt is running over pulley, the friction creates grip on pulley which creates tension on one side of belt which makes the driven pulley to run, this side is called tight side. The other side does not experience same tension, that side is called slack side.
What is creep in the belt?
Creep in belt drive : When the belt passes from slack side to tight side, a certain portion of the belt extends and it contracts again when the belt passes from tight sight to slack side. Due to these changes in length, there is a relative motion between the belt and the pulley surfaces.
What is belt angle?
The angle subtended by the belt on the pulley is know as angle of contact or arc of contact. For better performance the angle of contact should be between 90° to 170°. To increase the angle of contact idler pulleys can be used.
Which side of the belt is to be kept as tight side?
Generally, the lower side is kept “Tight side” and upper side is kept as “Slack side” with the belt drives having small driving pulley and big driven pulley.