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MATERIAL HANDLING CONVEYING Conveyor Pulley Lowers Cost of Ownership Baldor Electric Co. now offers Dodge D‐LAG conveyor pulleys, the only line of stock con‐ veyor pulleys than can lower total cost of ownership, according to the company. D‐ LAG conveyor pulleys utilize a cutting‐edge natural rubber compound that is 73 percent more resistant to wear than standard SBR rubber. By increasing lagging life, Baldor's Dodge D‐ LAG conveyor pulleys will extend the oper‐ ating life of both the conveyor pulley and conveyor belt. The lagging is 100 percent vulcanized for pulley bonding and strength, making it resistant to cuts and gouges. Two pulley styles are available from stock for next day delivery; D‐LAG heavy‐duty drum pulleys from 10‐ to 24‐in. diame‐ ter, and D‐LAG MDX (mine duty extra) drum pulleys from 12‐ up to 24‐ in. diameter. Baldor's Dodge heavy‐duty pulleys are designed with flexible end discs to eliminate weld fatigue under cyclical loads, while Dodge MDX pulleys feature an integral hub design that eliminates the welded hub. Independent testing in 2012 showed D‐ LAG significantly outperformed other rub‐ ber formulas when subjected to abrasive conditions, the company said. Baldor Electric Co., www.baldor.com Automated Log Washer Offers Efficiency, Consistent Product Quality The automated log washer from Columbus, Neb.‐based GreyStone Inc., increases effi‐ ciency and lowers labor costs for aggregate producers, keeping the quality of aggregate consistent while saving operators time and money. GreyStone recognized the need for log washer operators to keep output quality consistent without having to make frequent manual adjustments to the angle of inclina‐ tion. Working closely on the unit's design with one of the company's long‐time cus‐ tomers, GreyStone manufactures an auto‐ mated log washer with a hydraulic support system tied to a PLC sensor that detects the tonnage going through the unit. When the tonnage decreases, the system de‐ tects this and in‐ creases the angle of inclination – also in‐ creasing the material retention time in the unit – until the sensor detects the proper tonnage. If tonnage in‐ creases, the hydraulic system automatically decreases the angle of inclination, which de‐ www.rockproducts.com creases material retention, until the proper tonnage is detected. Upper and lower limit switches are employed to prevent excess in‐ clination or damage to the unit. Log washers typically operate at inclina‐ tions between 5 and 10.5 degrees. As the angle of inclination increases, output capac‐ ity of the unit decreases, with a correspon‐ ding increase in retention time. Decreasing the angle has the opposite effect: increased capacity and a decrease in retention time. This makes the angle of inclination vital. In most applications, the feed rate is set and the angle of inclination can only be adjusted through a costly trial‐and‐error method until the desired output (clean rock) is achieved. By automating the variable incline section of the log washer, GreyStone's unit removes the need for human input beyond an initial cali‐ bration by the operator. The resulting in‐ crease in efficiency and elimination of unnecessary labor costs solve the problem of inconsistent feed rate and uneven product quality – which in the past typically forced many operators to split the difference be‐ tween clean material and lowered tonnage output. GreyStone, www.greystoneinc.com TROUGHING IDLER STREAMLINES PERFORMANCE The Tru-Trainer Troughing idler from ASGCO is based on an enhanced load carrying design which features quicker activation, increased swing and overall better performance, according to the company. There is no edge damage and the troughing angle is adjustable. The product features: ■ Load Carrying Side Conveyor Alignment – Due to the troughed nature of this side of the conveyor belt, the Tru-Trainer Troughing roller was specifically developed to accommodate a different training configuration. ■ Activating Wing Rollers – Set to have a maximum effective contact between the belt edge and the wing roller of 25-55 degrees (instead of the usual 90 degrees), and are compatible with all troughed belts from 15-45 degrees. ■ Internal Pivot – As the conveyor belt moves offcenter the conveyor belt slides up the wing roll and thus causes the TruTrainer to pivot on its internal pivot and steer the conveyor belt back to center with minimum force. ■ Unique Steering Roller – The unique aspect of the Tru-Trainer Troughing Trainer roller is that the center roll does all the steering and not the wing rolls, as this is where the most effective steering forces are exerted. ASGCO, www.asgco.com ROCKproducts • JULY 2013 25