Jaw
28Pages

■■ RRS and RRSC Types - Spacer ■■ C and H Type - Medium / Heavy Duty

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...

The Jaw Type couplings from Lovejoy are offered in the industry’s largest variety of stock bore/keyway combinations. These couplings require no lubrication and provide highly reliable service for light, medium, and heavy duty electrical motor and internal combustion power transmission applications. ■■No metal to metal contact ■■Fail-safe – will still perform if elastomer fails ■■Resistant to oil, dirt, sand, moisture and grease ■■Most types available from stock in 24 hours L Type ■■ oupling offers standard shaft-to-shaft connection for general industrial duty applications C The Lovejoy Jaw...

Lovejoy offers four types of elastomer designs to allow for additional flexibility in addressing specific application requirements. One piece designs are used in the “L” and “AL” models (referred to as spiders) and multiple part “load cushions” are used in the “C” and “H” model couplings. The load cushions are in sets of 6 to 14 pieces depending on coupling size. Solid Center Spider ■■The solid center design is commonly used design when shafts of the driver and driven equipment can be kept separate by a standard gap Open Center Spider ■■The open center design allows for the shafts of the...

The selection process for determining the proper jaw coupling size and elastomer requires using the charts shown on the following pages. There are three components to be selected, two hubs and one elastomer. When the shaft size of the driver and driven of the application are of the same diameter, the hubs selected will be the same. When shaft diameters differ, hubs selected will differ accordingly. Jaw Type Coupling Selection Process JW Selection Process List of Charts provided for Selection: ■■Chart 1 – Application Service Factors (page JW-8) ■■Chart 2 – Spider Performance Data (page JW-9)...

Selection Example Step 7: Using the UPC number Selection table, locate the appropriate Lovejoy UPC numbers. The L Type Spider Table (page JW-10), and the L Type hub table (page JW-11), provides easy reference to the Lovejoy UPC numbers. Step 3: Calculate the Design Torque of your application: Design Torque = Nominal Torque x Application Service Factor = 700.28 x 1.25 = 875.35 in-lb Locate the L Type Spider Table (page JW-10). The spider is selected by scanning down the type column and locating the NBR (Solid) entry. Read across to the L190 column and locate the Lovejoy UPC number of 12274....

Lovejoy Coupling Solutions Jaw Application Service Factors Selection Data Application Service Factors Chart 1 Service Factors Service Factors Service Factors Caution: Applications involving reciprocating engines and reciprocating driven devices are subject to critical rotational speeds which may damage the coupling and/or connected equipment. Contact Lovejoy Engineering with specific requirements. Note: ■ 1 indicates: If people are transported, Lovejoy does not recommend and will not warranty the use of the coupling.

Lovejoy Coupling Solutions Data Chart 2 Temperature Characteristics Range Notes: ■ 1 indicates: NBR standard shore hardness is 80A ±5A - Except L035=60A. Other softer or harder designs are available in NBR material; consult Lovejoy. ■ 2 indicates: Chemical Resistance chart shown in Engineering Data Section (page ED-9). Chart 3 Jaw Nominal Rated Torque Data Max Bore Note: ■ Bronze has a maximum RPM capability of 250 RPM. www.lovejoy-inc.com 21 JW

Lovejoy Coupling Solutions Jaw L Type Spiders / Hub Spline Bores Item Selection L Type Coupling ■ Sizes range from L035 to L276 ■ Ordering requires selecting UPC numbers for two standard L hubs and one standard open or solid center elastomer (spider) SW Type Coupling ■ Sizes range from L090 to L190 ■ Ordering requires selecting UPC numbers for two standard L hubs and one snap wrap spider with snap ring ■ Both L and SW Type couplings, select hubs from the standard bore and keyway chart (pages JW-11 and JW-12) maximum RPM forSW + Ring is 1,750 RPM ■ LC coupling uses a snap wrap spider with a...

Coupling Solutions Jaw L Type Inch Bore / Keyway Item Selection The L Type coupling consists of two standard L Type hubs and one spider. Refer to pages JW-11, JW-12, and JW-10. Bore

Jaw L Type Metric Bore / Keyway Item Selection The L Type coupling consists of two standard L Type hubs and one spider. Refer to pages JW-10, JW-12, and JW-10. L Type Hub - Metric Bore and Keyway UPC Number Selection Table Bore

Love/oy Coupling Solutions LC Type / Inch Bore / Keyway Item Selection LC Type Couplings The LC Type coupling consists of one standard L Type hub (without collar attachment), one LC Type hub (provides collar attachment), one standard snap wrap center and one collar with screws. Refer to pages JW-11, JW-12 and JW-13 for details. Features ■ Radially removable insert ■ Collar allows for maximum speed of 3,600 RPM ■ Collar manufactured from 1018 Steel Notes: ■ These “LC” hubs are drilled and tapped to accept collar mounting screws but the collar and hardware are not included. ■ See L Type (inch...

LC Type Spiders / Metric Bore / Keyway The LC Type coupling consists of one standard L Type hub (without collar attachment), one LC Type hub (provides collar attachment), one standard snap wrap center and one collar with screws. Refer to pages JW-11, JW-12 and JW-13 for details. Item Selection ■■Radially removable insert Features ■■Collar allows for maximum speed of 3,600 RPM ■■Collar manufactured from 1018 Steel LC Type Wrap Spider / Collar UPC Number Selection Table LC099 Snap Wrap Spider/No Ring Collar Only w/Screws LC Type Hub - Metric Bore and Keyway UPC Number Selection Table Notes: n...