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The ATRA-FLEX® M-Series flexible couplings are designed to accommodate a wide range of industrial applications, offering a torque capacity up to 3,610,000 in-lbs and can handle shaft diameters up to 16 inches. These couplings feature a unique twist-and-lock ring that eliminates the need for fasteners or special tools, facilitating easy installation and maintenance. The rugged polyurethane insert effectively absorbs torsional shock and vibration while accommodating angular, parallel, and axial misalignment, thereby enhancing equipment longevity. Additionally, the couplings operate lubrication free, have no metal-to-metal contact and can withstand temperatures ranging from -60°F to 350°F. For applications requiring corrosion resistance, options include stainless steel components or a cost-effective nitrocarburized process known as OnyxShield™, as an alternative.
- Unique twist-and-lock ring with a snap ring.
- No lubrication is required.
- Quick insert replacement, reducing maintenance cost and downtime.
- Large torque capacity up to 3,610,000 in-lbs for a wide range of industrial applications.
- Insert is the only wearing component with no metal-to-metal contact.
- Polyurethane inserts are available in a range of hardness to meet most torsional stiffness and torque requirements.
- Dampens torsional vibrations and absorbs shock loads.
- Standard inserts have a temperature range from -60° to 250° Fahrenheit with high temperature inserts available up to 350°F.
- OnyxShield™ couplings are available for enhanced corrosion and wear resistance.
Unit of Measure
Specifications
D1 |
N/A
7.600 |
G |
N/A
6.700 |
| MAXIMUM BORE1 |
N/A
3.375 |
RSB |
N/A
0.940 |
C1 (IDEAL DBSE) |
N/A
0.300 |
L |
N/A
3.780 |
D4 (FSSO) |
N/A
5.500 |
D3 |
N/A
6.400 |
J1 |
N/A
1.350 |
J2 |
N/A
3.250 |
K |
N/A
3.100 |
E (GAP) |
N/A
0.200 |
Weight with RSB hubs |
N/A
36 |
Max RPM Balanced G2.5 Standard |
N/A
5,300 |
Max RPM Unbalanced Standard |
N/A
3,600 |
Insert Type Yellow
Continuous Standard - Yellow |
N/A
12,600 |
Intermittent Standard - Yellow |
N/A
21,000 |
HP at 100 RPM Standard - Yellow |
N/A
20 |
Temperature [Max] Standard - Yellow |
N/A
250 |
Temperature [Min] Standard - Yellow |
N/A
-60 |
Insert Type Orange
Continuous - Orange |
N/A
23,940 |
Intermittent - Orange |
N/A
39,900 |
Temp Rating - Orange |
N/A
-20/250 |
Durometer - Orange |
N/A
70D |
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