Flexible Disc Couplings
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Flexible Disc Couplings TB Wood’s Form-Flex® & Torsiflex-i Ameridrives • Bibby Turboflex • Guardian Couplings Huco • Lamiflex Couplings • T

TB Wood's TB Wood’s is an industry leading designer and manufacturer of mechanical power transmission equipment for industrial control. Our mechanical product lines include: clutch and brake, synchronous and belted variable speed drives; grid, disc, jaw, gear coupling and elastomeric coupling products; sheaves and bushings. Registered trademarks include Sure-Flex Plus®, Dura-Flex®, G-Flex®, and Sure-Grip®. TB Wood’s was founded in 1857 and began as a foundry producing wood burning stoves. Our company’s tradition of product innovation started early. TB Wood’s entered the power transmission...

Form-Flex & Torsiflex-i Flexible Disc Couplings ®

Product Features and Options Form-Flex® A-Series Features Interference Optional Optional Puller Holes: 300 Series Stainless Steel Standard Flex Disc: Dynamic Balance: Balance Class: Standard Alloy Steel (1) Stainless Steel is standard. Alloy Steel is optional. (2) Alloy Steel is standard. Stainless Steel is optional. Form-Flex® Disc Coupling Advantages • • • • • • • Over 40 years experience in flexible disc couplings All metal Construction No Lubrication No Moving Parts Long Life High Torsional Stiffness Precise Positioning - Zero Backlash Applications Flexible Disc couplings can be used in...

RADIAL LOAD RADIAL LOAD Coupling Application Types Table Coupling Type Spacer Couplings Double Flex Typical Applications Spacer couplings are used to connect fully supported shafts with wider separations than can be reached with a close couple design. Spacer couplings allow room for installation and maintenance without moving the connected equipment. Shaft separations are generally in the range of 3 to 12 inches. These couplings accommodate angular, parallel and axial misalignment. Floating shaft couplings are spacer style couplings which are designed to connect widely separated shafts. The...

Coupling Selection Process 1) Select correct Service Factor (S.F.) from the chart below. 2) Calculate HP/100 RPM or Design Torque (lb-in). Calculate kW/100 RPM or Design Torque (Nm) HP/100 RPM = HP x S.F. x 100 coupling RPM Design Torque (lb-in) = 63025 x HP x S.F. coupling RPM Design Torque (Nm) = 9550 x kW x S.F. coupling RPM Design Torque = Torque (lb-in) x S.F. Design Torque = Torque (Nm) x S.F. 3) Compare this to the HP/100 RPM (kW/100 RPM) column or the Rated Torque column. 4) Check other limiting factors such as max bores, minimum DBSE, max speed and overall dimensions. Unit...

Coupling Selection Guide 1) Consult factory for applications in shaded areas. 2) Torque ratings may vary by coupling series. 3) Use the 1.0 service factor column if a service factor was used in the HP/100 RPM calculation. Consult Altra Couplings Engineering Not Recommended for these Applications Typical Application Conditions SMOOTH MOTOR OR TURBINE DRIVEN STEADY MOTOR OR TURBINE DRIVEN MODERATE MOTOR OR TURBINE DRIVEN MEDIUM MOTOR OR TURBINE DRIVEN HEAVY-HIGH TQ. MOTOR OR ENGINE DRIVEN EXTRA HEAVY ENGINE DRIVEN EXTREMELY HEAVY ENGINE DRIVEN SOFT START WITH STEADY LOAD AVERAGE STARTING...

Standard Bore Tolerances Imperial Standard Bore and Keyway Info Recommended Bore Tolerance for Imperial Shafts (Inches) Recommended Hub Keyway Dimensions (Inches) Nominal Bore Range Nominal Shaft Range NOMINAL KEYWAY DEPTH MEASURED AT CENTER NOMINAL KEYWAY DEPTH MEASURED AT SIDE KEYWAY WIDTH Reference AGMA 9002-B04 IMPERIAL Standard keyway fit is Commercial Class per AGMA 9002-B04 Metric Standard Bore and Keyway Info Recommended Bore Tolerance for Metric Shafts (mm) Nominal Shaft Range Over Hub Keyway Nominal Key Size Nominal Bore Range Recommended Hub Keyway Dimensions (mm) Standard metric...

Engineering Standards INDUSTRY STANDARDS REFERENCED AGMA 9002-B04 - BORES AND KEYWAYS FOR FLEXIBLE COUPLINGS (INCH SERIES) AGMA 9112-A04 - BORES AND KEYWAYS FOR FLEXIBLE COUPLINGS (METRIC SERIES) AGMA 922-A96 - LOAD CLASSIFICATION AND SERVICE FACTORS FOR FLEXIBLE COUPLINGS API610 / ISO 13709 - CENTRIFUGAL PUMPS FOR PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRY, 11th Edition - Torsiflex-i meets the requirements of API610, 11th Edition when supplied with interference fit bores. API671 / ISO 10441 - SPECIAL PURPOSE COUPLINGS FOR PETROLEUM, CHEMICAL AND GAS INDUSTRY SERVICES, 4th Edition...

Product Differentiation Form-Flex® A - Series Higher bore capacity in low torque range Higher Torque Density Higher Torque Density and large bore capacity AGMA 7 balance class AGMA 8 balance class AGMA 9 balance class Non-Unitized Flex Pack Unitized Flex Pack Factory assembled Transmission Unit ATEX Group II/ Cat 2 Anti-Sparking design is standard High to Moderate speeds DISC PACK DESIGN COMPARISON Form-Flex® G-Series Sizes 311-380 Form-Flex® G-Series Sizes 340 & 412-511 Form-Flex® A-Series Sizes 5-35 Form-Flex® HSH/FSH • Disc pack force transferred to washer & Form-Flex® G-Series Sizes...

Spacer Couplings PRODUCT DESCRIPTION • Designed for moderate to higher speed applications • Construction includes: - Two fully machined steel hubs - One fully machined steel spool spacer - Standard hardware and stainless steel disc packs Form-Flex® A-Series designs use non-unitized disc packs Form-Flex® G-Series designs use unitized disc packs Torsiflex-i designs use a drop out transmission unit with non-unitized disc packs Custom length spacer up to max DBSE Balancing and other modifications to suit your special system requirements Can be bored for any shaft configuration (F5-40 for hub...

Spacer Coupling AP Series - Form-Flex Double Flex Spacer COUPLING CAN BE SUPPLIED TO API610 11TH EDITION H Dimensions are shown for standard AJ hubs unless otherwise specified. Rated Torque (lb-in) Peak O/L Torque (lb-in) Misalignment Capacity Angular (Degrees/Disc Pack) 1) Weight and WR2 values shown are for AJ hubs at max inch bore and spacer length at D Min STANDARD MATERIALS (CLASS A) HUBS - CARBON STEEL AP SERIES COUPLINGS ARE SOLD AS COMPONENTS SPACER - CARBON STEEL HARDWARE - ALLOY STEEL DISC PACK - STAINLESS STEEL 1 - PACER SUB-ASSEMBLY - Example for DBSE = 5.00” S (AP25A500)...