Lorbrand
Steel Manufacturers in Pretoria

Lorbrand supplies high quality idlers, including custom conveyor manufacturing products such as conveyor belt scales, support modules and conveyor technologies to the bulk conveying industry worldwide, idler rollers and conveyor pulleys.

Specialists in heavy duty conveyor component design and manufacture. The revolutionary centrifugal self-cleaning action of the seals ensure that bearings are able to reach their designed life. Engineered class pulleys are manufactured in our state of the art pulley manufacturing facility. Lorbrand has, since 1985, supplied high quality idlers, support modules and conveyor pulleys to the bulk conveying industry worldwide. A large range of steel idlers from CEMA B to CEMA F and SERIES 60 load rating have been supplied for custom conveyor installations such as pipe conveyors, long-high capacity overland conveyors, ship-loading terminals and plant conveyors. Lorbrand also supplies full composite, aluminium and HDPE sleeved idlers for special applications. Lorbrand has the capacity to manufacture pulleys with a net weight in excess of 20 tons, making it one of the most capable and versatile manufacturers worldwide. Lorbrand has established a network of licensees, distributors and agents which ensures worldwide supply and after-sales service. Principles which have driven Lorbrand from the beginning. We develop, test and refine, until the products we make are the absolute best they can be. Grease-free sealing elements result in much lower friction values than conventional designs. Lorbrand Idlers for conveyors have frictionless seals.Idler drag is due to bearings only and is therefore easy to predict. Drag is dependent on factors such as loading, rpm, bearing type, characteristics and temperature. Tests can be performed on actual bearings supplied on a particular project. Typical friction values for 3 roll carry idlers at rated load running at 500 rpm are listed below. Primary Sealing The success of the primary sealing area lies in the fact that dirt which enters is ALLOWED TO ESCAPE. The metal seal collects dirt and flings it radially outward due to centrifugal force (3-9 times gravitational). Bearing Sealing Greased for life bearings complete with seals on both sides are used. The bearing seals form the final barrier against dirt ingress, especially rust particles which are formed due to condensation inside the shell tube. Impact and rubber disc rolls consist of steel reinforced rubber impact discs press fitted onto a conventional steel roller body. Each rubber disc is positively located and there is no possibility of rubbers moving due to impact loads. Spacers and end-stops are not required.Apart from the rubber discs, the same components and seals are used for the steel rollers. Combining the strength of a proven standard welded steel body with the non-stick properties of an HDPE sleeve. Rollers are ideally suited for low noise applications and as scale idlers. Take care when walking next to the belt, chances are its running! Aluminum rollers are lightweight and quieter than steel and are thus becoming more and more of a requirement on installations with strict OH&S codes.Large belt width installations such as coal loading terminals where there are aerial walkways increasingly use aluminum rolls.The corrosion resistance of aluminum rolls is a huge advantage at coastal or high humidity locations.