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Variable Speed Drives

Overview

WB Series

Pulleys in the WB series use wide variable speed belts for the most efficient transmission of torque through the widest possible speed range. This two-side moveable pulley series offers the best possible belt alignment when used with a grooved companion sheave. WB pulleys provide maximum service when lubricated through a convenient grease fitting and offer sizes ranging from 6 to 13 inches in diameter, with the largest model capable of 15 HP. All models greater than 1 HP feature durable cast iron flanges (Models 245 and 260 are made with lightweight, corrosion-resistant anodized aluminum flanges).These pulleys can be used on both adjustable and fixed center drives. Typical applications include: conveyors, printing presses, mixers, packaging and bottle-filling machines, machine tools, and agricultural equipment. WB Series HI-Ratio Series Hexadrive Series Adjusta-Sheave Series

Hi-Ratio Series

Hi-Ratio drives provide the unique combination of broader driven speed ranges and lowest possible minimum driven speed. Three drive packages are available, with horsepower ranges from 1/2 to 5, with a 1,750 RPM motor, and speed ratios up to 11.5 to 1. They are ideal for use on machine tools and mixing machinery.

Hexadrive Series

Hexadrive pulleys are the most durable variable speed pulleys available. The hexagon-shaped center shaft efficiently transmits torque through the six hex flats for top performance and long life. The surface of the shaft is covered with a resilient elastomer, which means there is no metal-to-metal contact on any sliding surface and lubrication is not necessary. These pulleys are available in adjustable or fixed center drives and come in two styles: one-side moveable for V-Flat drives, and two-side moveable for V-V drives. Flanges are made of cast iron to provide a long-wearing belt contact area. These pulleys provide size ranges from 6 inches up to 12.5 inches in diameter, and a maximum rating of 30 HP @ 1,750 RPM. Some typical applications include: agricultural equipment, food packaging machines, air handling systems, textile spinning frames, mixers, pumps, machine tools, and foundry snag grinders.

Adjusta-Sheave Series

The Lovejoy Adjusta-Sheave can be a cost-saving alternative to a spring- loaded pulley when speed change is infrequent. To change speeds, the drive must be shut down (unlike other variable speed pulleys). All models use wide variable speed belts. The Adjusta-Sheave design eliminates the need for internal drive keys, thus providing more efficient transfer of power and longer life. The two cast iron flanges are moveable, allowing perfect belt alignment at all times. Four models are available with ranges from 5 through 30 HP and speed ratios up to 2.5 to 1. Typical applications include: textile spinning frames, heating and air conditioning equipment, pumps, etc.
VSD

www.lovejoy-inc.com

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