Universal Joints ■■ NB (Needle Bearing) Type ■■ D Type Stainless ■■ LOJ Type GD ■■ DD and DDX Type ■■ Universal Joint Boots

Universal Joints 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...

Universal Joints

Universal Joints Lovejoy has been manufacturing industrial universal joints for over 45 years. Our industrial universal joint product line is well established and provides you with a wide range of standard and specialized products. The shape of the yoke is a special feature which results in exceptionally high strength, yet allows full, free movement of the joint. This accounts for the high horsepower capacity at high speeds. Lovejoy Pin & Block and Needle Bearing Industrial Universal Joints JW ■■Industry standard Features ■■Stainless steel and needle bearing available ■■Pin & Block design ■■13...

Lovejoy Coupling Solutions Universal Joints Pin & Block Selection Process Pin & Block Type Selection Process List of Charts provided for Selection: ■ Chart 1 - Application Service Factors (page UJ-6) ■ Running Curves (page UJ-7) Steps In Selecting A Universal Joint Determine the correct universal joint size by working out the following calculations: Step 1: Multiply revolutions per minute (RPM) by working angle. Step 2: Determine the nominal torque of your application by using the following formulas: in-lbs = HP x 63025 RPM Nominal torque = Nm = KW x 9550 RPM Step 3: Multiply the calculated torque...

Universal Joints Application Service Factors n 1 indicates: If people are transported, Lovejoy does not recommend and will not warranty the use of the coupling. n he values contained in the table should be used as a general guide. T n For above average shock loads or start/stop conditions of not more than once per hour, add .5 to the table value. n Universal joints are not recommended for internal combustion engine applications. n For severe shock loads or reversing loads, or start/stop conditions of more than once per hour, add 1 to the table value. Application Service Factors Selection Data

Universal Joints D, HD and NB Type Running Curves Selection Data JW Running Curves Working Torque in-lbs Working Torque in-lbs

Lovejoy Coupling Solutions Universal Joints D and HD Type Dimensional Data D Type ■ Standard industrial type universal joint with pin & block design ■ The D Type is ideal for applications with angles up to 25° and speeds of up to 1,750 RPM ■ Available in your choice of round, hex, splined, or keyway bore ■ Boot retaining grooves are standard. See page UJ-11 for selection of onsite replaceable universal joint boots ■ Lubrication is required for optimal wear - boots and lubricant extend universal joint life HD Type ■ The HD Type universal joint has induction hardened yoke ears provide longer life...

Lovejoy Coupling Solutions Universal Joints D 303 Stainless and NB Type Dimensional Data D Type 303 Stainless ■ Made from 303 stainless steel ■ Ideal for applications with exposure to corrosive chemicals, corrosive atmosphere, or sanitation requirements are a factor ■ Available in sizes: 4, 6, 8, 10 and 12 (Other sizes are quantity dependent) ■ Available in your choice of round, hex, splined, or keyway bore ■ Boot retaining grooves are standard. See page UJ-11 for selection of on-site replaceable universal joint boots ■ Lubrication is required for optimal wear - boots and lubricant extend universal...

Lovejoy Coupling Solutions Universal Joints DD and DDX Type Dimensional DataDouble Joint Arrangement ■ Designed with two Lovejoy D Type universal joints and a center connecting shaft ■ DD and DDX Type universal joints are tailored to your specific application requirements ■ This configuration compensates for both parallel misalignment and shaft separation ■ Round, hex, splined, or keyway bores are supplied per your requirements ■ Boot retaining grooves are standard. See page UJ-11 for selection of on-site replaceable universal joint boots ■ Lubrication is required for optimal wear - boots and...

Lovejoy Coupling Solutions Universal Joints LOJ and JR-4 Types, Boots Dimensional Data LOJ and JR-4 Types ■ Offset pin design ideal for use on hand operated, low torque drives ■ Capable for operating angles up to 45° of angular misalignment ■ Application examples: remote control linkages, snow blowers, packaging machinery, awning devices, etc. ■ The LOJ available with round, hex, splined, or keyway bores ■ The JR-4 is made of tough Zytel® material, so it will not rust and no lubrication needed ■ The JR-4 withstands oils, gasoline, salts, and temperatures from -40° to 225° F ■ The JR-4 is available...