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Gear

Overview

Lovejoy / Sier-Bath Continuous Sleeve and Flanged Sleeve Couplings Continuous Sleeve Series Flanged Sleeve Series

Features Features

â–  Simple and inexpensive all steel type of gear coupling constructed with a â–  Patented Vari-Crown
® tooth form for long coupling lifePrecision cut 20° pressure angle gear teeth with minimum backlash single sleeve and 2 hubsComparatively simple installation â–  â–  â–  All steel sleeves and hubs (stainless steel available)
G â–  Precision cut 20° pressure angle gear teeth with minimum backlash â–  Designs for applications requiring horizontal and vertical orientation â–  Most standard configurations are available as stock items â–  Most standard configurations are available as stock items â–  Angular misalignment of 1/2° per gear mesh (flex-plane) â–  Angular misalignment of 1-1/2° per gear mesh (flex-plane) up to size 5.5, â–  Sizes 7/8 through 12, to accommodate bore sizes up to and including 3/4° for sizes 6 and aboveCoupling sizes available through size 30 to accommodate bore sizes up 12.50 inchesInterference fit (standard) and Clearance fit on bores are available â–  â–  to and including 44 inchesInterference fit (standard) and Clearance fit on bores are available â–  Load Capacities range from 2,500 in-lbs up to 2,520,000 in-lbs â–  â–  Designs for applications requiring horizontal and vertical orientation, â–  Load capacities range from 7,600 in-lbs up to 47,269,000 in-lbs â–  full-flex, flex-rigid, mill-motor, disengagement, sliding hubs, Shear Pin, floating shaft, and spacersPatented and tested BUNA N seal design with reinforced washers â–  Exposed bolts standard on all sizes, shrouded available by request up â–  bonded to the inside edges which positively retain lubricant and seal the interior from outside contaminantsReinforced rubber seals with snap rings to hold in lubricant to size 6Standard bolts supplied by Lovejoy are treated to be corrosion resistant â–  Two snap rings made of hardened spring steel which securely hold the â–  â–  coupling together, are easy to install or remove, yet withstand 100,000 pounds of end thrustInch and Metric bore sizes available â–  Flanged sleeve couplings are interchangeable with industry standards â–  Piloted gear fit for higher speeds and less vibration â–  Labyrinth all steel seal design in FL series â–  Inch and Metric bore sizes available

Standard Types and Sizes Misalignment and End-Float Capability

Lovejoy / Sier-Bath couplings are stocked in an assortment of configurations which include C and F standard hubs and sleeves, Mill Motor hubs, Vertical style, Floating Shaft, and Spacer designs. Lovejoy’s superb engineering staff make it possible to support many additional coupling types such as the Brakedrum type, Sliding Hub type, Shear Pin type, Jordan type, and custom lengths for non standard shaft separations. Additional size ranges and designs to meet unusual application requirements can also be manufactured by Lovejoy to meet market demands. Material can range from standard steel to alloy steel and even stainless steel. The exceptional simplicity of the Lovejoy coupling design make this all possible. The basic principle of Lovejoy / Sier-Bath C and F type couplings is similar to that of other conventional flexible gear couplings. While it is desirable to align shafts as accurately as possible, the purpose of any flexible coupling is to absorb probable angular, parallel, and axial (end-float) misalignment. Lovejoy/Sier-Bath couplings utilize a unique gear tooth geometry developed specifically to resolve issues with shaft misalignment and accommodate from 1/2° to 1-1/2° per gear mesh or flex plane. The hub teeth are fully crowned to provide for a larger contact area and lower stresses under misaligned conditions. The crowned tooth design also eliminates most of the end loading that occurs on straight gear teeth under misalignment. You must refer to page G-2 (Page 116) for Important Safety Instructions and Precautions for the selection and use of these products. Failure to follow the instructions and precautions can result in severe injury or death.

WARNING

G-4

118

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