Luoyang Dahua Heavy Machinery Co., Ltd. from the professional jaw crusher development to meticulous pre-sales and after-sales service, all reflect the attention to detail and the pursuit of excellence in style and service concept. In 2011, Luoyang Dahua Heavy Machinery Co., Ltd. received orders from many enterprises and institutions at home and abroad, which was exchanged for the quality assurance and service concept of Luoyang Dahua Heavy Machinery Co., Ltd. The employees of Luoyang Dahua Heavy Machinery Co., Ltd. are pragmatic, but they are persistent. They have a genetically instinct for service quality: there is no best service, only better service.

The high-quality jaw crusher, world-class crushing technology and the service concept of excellence, the jaw crusher of Luoyang Dahua Heavy Machinery Co., Ltd. provides 100% guarantee for the profit of the customers, and also brings the company Great economic benefits.
Please indicate the source: http:// Luoyang Dahua Heavy Machinery Co., Ltd.

Pulley,  in mechanics, a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used singly or in combination to transmit energy and motion. Pulleys with grooved rims are called sheaves. In belt drive, pulleys are affixed to shafts at their axes, and power is transmitted between the shafts by means of endless (ends joined together) belts running over the pulleys. One or more independently rotating pulleys can be used to gain mechanical advantage, especially for lifting weights. The shafts about which the pulleys turn may affix them to frames or blocks, and a combination of pulleys, blocks, and rope or other flexible material is referred to as a block and tackle. Archimedes (3rd century bc) is reported to have used compound pulleys to pull a ship onto dry land. Together with the lever, wedge, wheel and axle, and screw, the pulley is considered one of the five simple machines.

Sheave Pulley

Sheave Pulley,Ending Pulley,Steel Sheave Pulley,Sheave Block String Pulley

NINGBO MARSHINE POWER TECHNOLOGY CO., LTD. , http://www.marshine-power.com