Posted to News on 23rd Jun 2008, 13:34
High-reliability worm gears fit standard IEC motors
Nord Gear UK is announcing a range of high-reliability worm gears for increased uptime. Fitted with oversized bearings, the right-angle gear units provide extended life in electromechanical automation applications such as conveyors and will interface with any standard IEC motor.
Modular design principles enable the Universal Worm range of worm gearboxes to be customised using a broad range of standard accessories to provide optimised power transmission for virtually any application.
Worm gears are excellent wherever large gear reductions are required. As standard, Universal Worm units can be supplied with drive ratios from 5:1 to 100:1. With an optional helical gear pre-stage, ratios of up to 3000:1 are achievable. Nord Gear's worm units are particularly robust and also mount in any orientation, making them versatile for conveyor applications. The competitively priced worm gears - or complete geared motors - are available ex-stock, assembled to order, from Nord Gear UK's Abingdon facility.
Universal Worm gear units are housed in a single-piece diecast aluminium enclosure, provided with lifetime lubrication. The rigid housing has no cover or sealing joints, ensuring a high degree of operational safety, even with the highest load capacity. The generously sized bearings further extend reliability, even when subjected to large overhung or thrust loads.
High efficiency
Quiet running and high efficiency are additional attributes of the gear units. This performance stems from a range of factors including the single-piece housing that provides great rigidity, hydrodynamic lubrication and a proprietary gear production process that delivers very smooth meshing. Efficiency levels for units with standard gear ratios are typically as high as 93 per cent - which is an exceptional level for worm style gearing. A clever mechanical design also enables the motor torque on geared motor variants to be transmitted through a flexible coupling. Again, this reduces noise and increases uptime, eliminating fretting damage that might otherwise result from shaft misalignment.
As standard, Universal Worm units offer foot mounting on three sides, B14 face mounts on two sides and a hollow output shaft. Nord Gear's range of accessories ensures that a wide variety of individual worm gear designs can be assembled using just a few modular parts, giving great design flexibility as well as interchangeability with other European manufacturers for repair and refurbishment applications. Among the gear configuration accessories are plug-in shafts, bolt-on type flanges and torque arms; for geared motors, encoders, brakes and forced ventilation accessories can also be assembled in the UK. These and other add-on components enable gear units to be adapted easily to suit virtually any application.
Assembly of gear units takes just a few minutes, and Nord Gear's UK facility carries a large stock of basic worm housings, worm gears and accessories, enabling application-specific devices to be built and shipped the same day if required. The service includes the assembly of complete geared motors. Nord Gear's facility also includes an automated painting line, enabling worm gears or geared motors to be delivered in an OEM's livery, ready for assembly into the finished product.
For more information, go to nord.com/cms/en/product_catalogue/geared_motors/geared-motors_detail_1544.jsp.
