Press Release Summary:
Suitable for axial adjustment of impeller clearance in vertical pump installations, RA/RAHS Series adjustable couplings offer close-coupled and spacer styles in RA and RAHS type. All styles and types are available in AISI 1045 steel or stainless steel. Rigid hubs with clearance-fit bores and keyways are available in 12 sizes to cover bore requirements ranging from 0.44 to 10.5 in. with square key, horsepower-per-100-RPM ratings up to 2,164.
Original Press Release:
New Ridgid Adjustable Couplings From Lovejoy, Inc. Ease Axial Adjustment Of Vertical Pump Impellers
DOWNERS GROVE (IL/USA), MAR. 27, 2002 -- A new series of Rigid Adjustable Type Couplings, designed for easy axial adjustment of impeller clearance in vertical pump installations, is being introduced by Lovejoy, Inc.
As an addition to the Lovejoy/Sier-Bath Gear Coupling Line, the new RA/RAHS Series offers both close-coupled and spacer styles in standard (RA) type and high-speed (RAHS) type, which is specially balanced to API 610 8th edition tolerances. Spacer styles provide a center section that can be removed to let the impeller lift out for maintenance without disturbing and having to re-set its vertical clearance adjustment, or demounting either the motor or pump housing. All styles and types are available in either AISI 1045 steel or stainless steel, for broad application across water, wastewater, power generation, refinery and many other industries.
Rigid hubs with clearance-fit bores and keyways allow easy slide-on, bolt-together installation. Twelve sizes cover bore requirements ranging from 0.44" to 10.5" with square key (or to 276mm with metric key), horsepower-per-100-RPM ratings up to 2,164, and thrust capacities up to 400,000 lbs.
The upper (motor) hub is indexed to the motor shaft by axial keyway and hangs on a split thrust ring fitted into the shaft's circular keyway. The lower (pump) hub, indexed to the pump shaft by axial keyway, hangs from an adjusting nut turned onto the pump shaft's threaded end.
The adjusting nut has a smooth cylindrical shape matching the hubs' outside diameter, with radial holes to allow turning with a spanner wrench. After adjustment is set, hubs and adjusting nut are locked together with axial through-bolts. Spacers engage the lower hub's through-bolts on one end and bolt separately to the upper hub on the other end.
About Lovejoy, Inc. -- Founded in 1900, Lovejoy is an international leader in flexible coupling design and development, and the creator of the industry standard Jaw style coupling. Through the breadth of its product line, which includes Curved Jaw, S-Flex, Gear, Torsional, and Disc style couplings, Lovejoy has built a reputation as a resource for flexible couplings that can serve applications of all types and sizes. Lovejoy also manufactures a complete line of variable speed pulleys and universal joints.
Lovejoy products are available worldwide from hundreds of power transmission distributors in North America as well as 45 other countries. Lovejoy supports their efforts from a network of regional sales offices and warehouses, and a large engineering, marketing, and customer service staff in Canada, Europe, and the USA. Lovejoy, Inc., is certified under the ISO-9001 International Standards for Quality Management.
For more information, visit Lovejoy's web site at www.lovejoy-inc.com , or contact Lovejoy, Inc., corporate office, 2655 Wisconsin Ave., Downers Grove, Illinois, 60515, USA. Phone (630) 852-0500; Fax (630) 852-2120; e-mail inquiries Info@lovejoy-inc.com.