Couplings - overview
What is a Coupling?
A coupling is a device that transmits torque & rotation between two shafts that are reasonably inline. Many people do not realize its significance in a power transmission system – until it’s too late.
- The ZERO-MAX CD Coupling was developed by Zero-Max Inc in the late 1980’s.
- Introduced in 1992 – 3 styles offered in tailor made design up to OD 4' / 1,2 meter.
- Field tested 1988-1991
- Patented open arm design.
- Patent granted 1993


Features and Benefits
Features and Benefits of the Zero-Max Composite Coupling:
- Zero backlash
- Required for reversing loads and endurance
- High torsional stiffness
- The Composite Disc Pack allows for a surplus of angular and axial misalignment while its high torsional stiffness avoids resonance throughout the operating range
- Maintenance free
- Very high misalignment capabilities
- Double flex can accommodate very high misalignments

- Low reaction forces
- Extends gearbox and generator bearing lifetime
- Longer Life than conventional discs
- No disc failures due to fretting or corrosion
- Disc Pack designed and rated for infinite fatigue life
- Disc material has a proven track record
- this product is known for high performance in various applications for more than 40 years
- Flex elements electrically insulated
- Eliminates current leak from the generator across the coupling to the gearbox, preventing gearbox bearing damage.
- Wide temperature range of disc material, -70° F to 250°F
- Disc material has excellent chemical resistance

