Lovejoy / Sier-Bath Gear Catalog
78Pages

■■ C Types – Continuous Sleeve ■■ F Types – Flanged Sleeve ■■ Dentex® ■■ R Types – Rigid Adjustable GD

Safety Warning When using Lovejoy products, you must follow these instructions and take the following precautions. Failure to do so may cause the power transmission product to break and parts to be thrown with sufficient force to cause severe injury or death. Refer to this Lovejoy Catalog for proper selection, sizing, horsepower, torque range, and speed range of power transmission products, including elastomeric elements for couplings. Follow the installation instructions included with the product, and in the individual product catalogs for proper installation of power transmission...

Lovejoy / Sier-Bath Continuous Sleeve and Flanged Sleeve Couplings JW JIS Flanged Sleeve Series Continuous Sleeve Series ■■Patented Vari-Crown® tooth form for long coupling life ■■Comparatively simple installation ■■All steel sleeves and hubs (stainless steel available) ■■Precision cut 20° pressure angle gear teeth with minimum backlash ■■Simple and inexpensive all steel type of gear coupling constructed with a single sleeve and 2 hubs ■■Most standard configurations are available as stock items ■■Sizes 7/8 through 12, to accommodate bore sizes up to and including 12.50 inches ■■Angular...

Lovejoy / Sier-Bath Nyflex® and Mite® Lovejoy / Sier-Bath Nylon couplings are compact and require no lubrication. They operate over a wide temperature range at speeds up to 5,000 RPM and are effectively used in applications such as Motor/ Generator sets, pump sets, and many light to medium duty industrial coupling applications. ■■Molded nylon sleeve ■■No internal frictional loss or heat buildup ■■Minimum backlash 2 Hubs Sintered iron is standard in the Nyflex and Mite. Teeth are crowned to provide greater misalignment capacity and to prevent gouging of Nylon sleeve. Maintain 0.13 inch...

Lovejoy / Sier-Bath Continuous Sleeve Series Couplings JW Standard C Type ■■Basis for all types of Lovejoy / Sier-Bath Continuous Sleeve Couplings ■■Single (flex-rigid) or double (flex-flex) engagement ■■Low profile compact design is easy to implement ■■Designed with longer universal hub on one end to accommodate straight or tapered shafts Mill Motor CMM Type CMM Type Section Pages G-18 and G-19 ■■Available with longer universal hubs on both ends Floating Shaft CFS Type ■■Universal hub bored to customer specifications ■■Standard hub and sleeve on the other end ■■Two flex-rigid couplings...

Lovejoy / Sier-Bath Flanged Sleeve Series Couplings Standard F Type ■■Double engagement (‘F’ flex-flex) for parallel and angular misalignment ■■FHD Type standard for sizes 10 through 30 (other sizes available upon request) ■■Industry standard flange bolt patterns Section Pages G-34 and G-35 Section Pages G-36 and G-37 Section Pages G-40 and G-41 F Type FFR Type FHD Type ■■Single engagement (‘FFR’ flex-rigid) accommodates angular misalignment only and is ideal for floating shaft applications Rigid-Rigid FRR Type ■■Designed for connecting two rigidly mounted shafts with no misalignment...

Slide FSL and FSLX Types ■■Allows for a predetermined amount of axial slide FSL Type FSLX Type ■■Custom slide lengths available ■■Longer hubs and sleeves available to accommodate additional slide capacity ■■Designed to limit and protect equipment against excessive torque or sudden shock loads ■■Shear pins designed and manufactured to shear at predetermined torque loads FSHP and FSHPB Type Contact Lovejoy Technical Support Shear Pin FSHP and FSHPB Types ■■Pins are inserted in hardened bushings to minimize wear ■■Available with bearing support to maintain alignment after the pins shear ■■Easy...

Lovejoy / Sier-Bath All Metal Labyrinth Seal Series Couplings ■■ All AISI 4140 Alloy Steel Design ■■ No rubber seals – metal labyrinth design ■■ Standard with exposed bolts ■■ Fully interchangeable with Industry standards ■■ Ideal for higher temperature applications FLAFR Type FLAMM Type FLHD Type Contact Lovejoy Technical Support ■■Industry standard flange bolt patterns ■■Double engagement (‘F’ flex-flex) for parallel and angular misalignment Single Engagement FLAFR Type ■■Single engagement (‘FFR’ flex-rigid) accommodates angular misalignment only and is ideal for floating shaft...

■■All alloy steel construction ■■ ully molded seals maintain lubricant retention under misalignment F conditions ■■Exposed bolts are standard, shrouded bolts are optional Lovejoy Alloy Steel Series Couplings JW ■■Double engagement (‘F’ flex-flex) for parallel and angular misalignment Standard FA Type FA Type FAFR Type Contact Lovejoy Technical Support ■■Industry standard flange bolt patterns G ■■Single engagement (‘FFR’ Flex-Rigid) accommodates angular misalignment only and is ideal for floating shaft applications Mill Motor FAMM Type Single engagement FAFR Type FAMM Type ■■Second hub bored...

Vari-Crown® Tooth Form With straight hub teeth, there is a high concentration of load under misaligned conditions. As misalignment increases, more of the load is carried by the ends of the teeth, resulting in premature breakdown and coupling failure. Some manufacturers use a conventionally crowned hub tooth known by various trade names. Regardless of the nomenclature, however, the contour of the tooth is a segment of an arc. Under all operating conditions, equal or similar contact areas between the hub teeth and the sleeve teeth exist. Conventional Crown Lovejoy / Sier-Bath Vari-Crown® The...

The following is a list of the information necessary to assist in making a coupling selection. Not all of these items will come into play in all selection processes. These items include, but are not limited to: Application related: • Application details • Type of motor and driven equipment • Motor horsepower or KW • Operating/coupling speed • Shaft sizes and separation • Space and size constraints • Environment (temperature, chemicals, etc) • Balance requirements • Special modifications Step 5: heck that the maximum bore size and the maximum RPM of the coupling C type selected to ensure the...