Standard Single-Ended Spacer Double-Ended Spacer Splined Hub QUICK FLEX® Couplings Better Performance. Less Maintenance.

Highly Engineered Solutions With its longstanding reputation for innovation, service and quality-driven work performance, Lovejoy has developed the expertise to engineer products that address the complex needs of its customers' applications. No matter what the application, Lovejoy has the selection, service and solution for it. Lovejoy World Headquarters in Downers Grove, Illinois USA Lovejoy continuously adds to their power transmission elastomeric and metal coupling offerings with the manufacturing of universal joints, variable speed pulley products, Uniflex, Torsional, S-Flex, Deltaflex, Gear,...

Table of Contents Technology Overview Engineering QUICK FLEX Standard Bore Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 QUICK FLEX Bore Tolerances and Keyway Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Torque Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Torque Ratings and Misalignment Tolerances. . . . . . . . . . . . . . . . . . . . ....

QUICK FLEX' Couplings When your equipment operates in harsh environments, you need products you can count on, like QUICK FLEX® elastomeric couplings. They are durable enough to face extreme challenges, yet need minimal maintenance. They are also easy to install and require no lubrication. With a lifespan that may last as long as your equipment, overall cost of ownership remains low. Pioneering Design QUICK FLEX couplings' innovative design features two steel hubs, a polyurethane insert and a cover. Our styles include: • Standard couplings . • Single-ended spacer couplings. • Double-ended spacer...

QUICK FLEX Comparison Product Offering QUICK FLEX couplings stand up to harsh environments and operate efficiently in applications including: • Motor to gearbox (low torque/high speed). • Gearbox to driven equipment (high torque/low speed). • Motors to pumps. • Any drive shaft to a driven shaft. Quality Solutions As a leading premium bearing and coupling manufacturer, we understand the critical quality link between materials and product performance We also strictly adhere to the Quality Management System in every plant worldwide, so each product meets the same high quality standards - no matter...

QUICK FLEX Couplings Engineering Standard Bore Sizes - Inch QUICK FLEX Standard Bore Sizes - Inch The following tables list, by bore size in inch dimensions, couplings that are commonly stocked. Standard Bore Sizes Inch – Clearance Fit Coupling Series QF5 Pilot Bore Standard Bore Sizes Inch – Clearance Fit , Continued Coupling Series Pilot Bore Note: n Inch bore and keyway tolerances c

QUICK FLEX Couplings Engineering Standard Bore Sizes - Metric The following tables list, by bore size in metric dimensions, couplings that are commonly stocked. Standard Bore Sizes Metric - Clearance Fit Note: ■ Standard metric clearance bore is H7 Tolerance per ISO 266. Keyway conforms to ANSI/AGMA 9112 normal keyway width tolerance.

QUICK FLEX Couplings Engineering Bore Tolerances and Keyway Sizes Table 3. Bore Tolerances and Keyway Sizes (Imperial) Note: ■ Metric bore tolerances conform to ISO 286-2 H7 for clearance fit and P7 for interference fit . Metric keyway tolerances conform to ANSI/AGMA 9112 Normal keyway width tolerance.

QUICK FLEX Couplings Engineering Torque Calculation Torque Calculation – Selecting QUICK FLEX Couplings QUICK FLEX Coupling Selection Using Inch-Pound Torque Ratings QUICK FLEX Coupling Selection Using Newton Meter Torque Ratings To select the correct QUICK FLEX coupling for your application, use the formulas below, the torque ratings on pages 11-13 and the maximum bore sizes and speed ratings on pages 35-41. If you need further assistance, please contact your Lovejoy Application engineer or visit www.lovejoy-inc.com. To select the correct QUICK FLEX coupling for your application, use the formulas...

QUICK FLEX Couplings Engineering Torque Ratings and Misalignment Tolerances Table 5. QUICK FLEX Coupling Torque Ratings with High-Speed Cover (Imperial) Note: ■ QUICK FLEX flexible couplings can sustain momentary peak torque loads up to 200 percent of their continuous torque rating .

QUICK FLEX Couplings Engineering Torque Ratings and Misalignment Tolerances Torque Ratings and Misalignment Tolerances Table 6. QUICK FLEX Coupling Torque Ratings with High-Speed Cover (Metric) Note: ■ QUICK FLEX flexible couplings can sustain momentary peak torque loads up to 200 percent of their continuous torque rating .

QUICK FLEX Couplings Engineering Torque Ratings and Misalignment Tolerances Table 7. QUICK FLEX Coupling Torque Ratings with Split Covers (Imperial) Note: ■ QUICK FLEX flexible couplings can sustain momentary peak torque loads up to 200 percent of their continuous torque rating .

QUICK FLEX Couplings Engineering Torque Ratings and Misalignment Tolerances Torque Ratings and Misalignment Tolerances Table 8. QUICK FLEX Coupling Torque Ratings with Split Covers (Metric) Note: ■ QUICK FLEX flexible couplings can sustain momentary peak torque loads up to 200 percent of their continuous torque rating .

QUICK FLEX Couplings Engineering Torque Ratings and Misalignment Tolerances Torque Ratings and Misalignment Tolerances Table 9. QUICK FLEX Coupling Misalignment Tolerances Axial Misalignment Tolerance Coupling Series Radial Misalignment Tolerance Axial Misalignment Axial Radial Misalignment Radial Angular Misalignment Tolerance Angular Misalignment Angular

QUICK FLEX Couplings Engineering Coupling Service Factors for Applications Suggested service factors listed are typical values based on normal operation of the mechanical power transmission system. Application Service Factor Continued on next page.