PRODUCT OVERVIEW
ATRA-FLEX ®
ADVANTAGES
THE STANDARD FOR REDUCED DOWNTIME AND EXTENDED EQUIPMENT LIFE
ATRA-FLEX ® COUPLING
GRID COUPLING
GEAR COUPLING
JAW COUPLING
TIRE COUPLING
DISC COUPLING
FEATURE
No Lubrication
X
X
X
X
Radially Removable Insert/Element
X
X
X
X
Insert/Element is the Only Wearing Component
X
X
High Torque Capacity
X
X
X
X
High Speed Capacity
X
X
X
X
Ease of Assembly
X
X
X
Torsionally Soft/Absorbs Shock
X
X
X
X
Angular Misalignment
Medium
Low
Medium
Low
Medium
Low
FEATURES & BENEFITS
Not all flexible couplings are created equal. ATRA-FLEX ® couplings are engineered to reduce maintenance, facilitate quick insert replacement and keep your equipment running longer than competitors’ couplings in the most demanding applications.
SIMPLE INSERT CHANGE Replace inserts without moving hubs or realigning equipment. NO LUBRICATION Eliminates lubrication maintenance and reduces downtime. NO METAL-TO-METAL CONTACT Reduced inventory since the insert is the only wearing component.
ONYXSHIELD™ CORROSION PROTECTION Added protection for corrosive applications.
\ OnyxShield ™ T-Series Flexible Coupling
SEE THE ATRA-FLEX ® DIFFERENCE
M-Series vs Grid Coupling
M-Series vs Gear Coupling
T-Series vs Grid Coupling
T-Series vs Gear Coupling
T-SERIES
T-FLEX ®
\ Insert Types: Standard or HD inserts available for 30% higher torque
High-performance flexible couplings designed for durability, reliability and simplified maintenance.
\ Insert Options: Yellow: Standard insert for general industrial applications
\ Quick Insert Access: Drive ring slides off for insert removal- no need to move connected equipment
Orange: High torque for low speed applications Red: Up to 350F high temperature applications Green: Extra high dampening
\ High Torque Capacity: Torque transmission up to 2,041,000 in-lbs and shaft diameters up to 20 inches
\ No Lubrication: No routine lubrication maintenance is required \ No Metal-to-Metal Contact: In a lockup, the insert shears and is the only component to replace
| SPACER
| AXIAL SLIDE
| BRAKE DISC
| NON-SPACER
| FLYWHEEL
| FLOATING SHAFT
M-SERIES
MILLENNIUM ®
Designed for quick insert replacement, reduced downtime and long-term reliability. \ Quick Insert Access: Ring slides off without any special tools or fasteners for insert removal- no need to move connected equipment
\ Insert Options: Yellow: Standard insert for general industrial applications
Orange: High torque for low speed applications Red: Up to 350°F high temperature applications Green: Extra high dampening
\ High Torque Capacity: Torque transmission up to 3,610,000 in-lbs and shaft diameters up to 16 inches
\ No Lubrication: No routine lubrication maintenance is required \ No Metal-to-Metal Contact: In a lockup, the insert shears and is the only component to replace
| NON-SPACER
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| SPACER
ONYXSHIELD ™ COUPLINGS
ATRA-FLEX ® OnyxShield™ couplings are designed to extend coupling life in the most demanding, harsh or wet environments where chemicals and consistent washdowns occur. CONQUER CORROSION
ONYXSHIELD™ SOLUTION
\ Corrosion resistance \ Thermo-chemical treatment to the steel components that will not wear off
\ Increased surface hardness \ Lower coefficient of friction \ Improved running wear performance
Learn more about ATRA-FLEX ® OnyxShield™ Couplings
EXTENDED COUPLING LIFE AND PROTECTION FOR YOUR EQUIPMENT \ Proven in the field for harsh environments \ Prevents hub fretting \ Suitable for damp, wash-down, and a wide range of chemicals
ENGINEERED FOR YOUR INDUSTRY
STEEL MILLS Roll Tables • Cooling Beds • Conveyors
PUMPS & COMPRESSORS Centrifugal• Boiler Feed • Vacuum Pumps • Reciprocating
PAPER & PULP Calendar Rolls • Vacuum Pumps • Pulper Pumps • Dryer Cans
MINING & AGGREGATES Incline Conveyors • Crushers • Screens • Ball Mills
DREDGING Dredge Pumps • Cutterheads • Marine Drives
FOOD & BEVERAGE Mixers • Conveyors • Grinders
Serving thousands of applications across heavy industry, manufacturing, and process industries worldwide.
Note: In accordance with the policy of U.S. Tsubaki Power Transmission, LLC to consistently improve its products, the specifications in this brochure are subject to change without notice. The logos, brand names or product names in this brochure are trademarks or registered trademarks of Tsubakimoto Chain Co. and its subsidiaries in Japan, the U.S. and other countries.
©2026 U.S. Tsubaki Power Transmission, LLC. All Rights Reserved
Printed in U.S.A.
08/26
Rev. 0
L14060
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