Copyright © 2008 US Digital (Terms and Conditions)
These flexible servo couplings are designed to connect two shafts that may be misaligned or have axial movement and relieve the stresses that would otherwise result from a rigid coupling. This design has been tested in excess of MIL-HDBK-5A, rotaing...
Shafts may extend into the flexible area because the ID in the flexible area is larger than the clamp ID. Clamps are an integral part of the coupling and cannot be removed.
The correct dynamic torque safety factor should be determined by the customer in accordance with acceleration, deceleration, reversals or sudden stops, etc.
Coupling material is QQA25/6 2024-T3.51 aluminum with MIL-A8625 Type II black anodize.
| OD | ID1* | ID2* | Max. Torque** | Wind-up*** | Max. Angular Offset | Max. Parallel Offset | Max. Axial Motion | Clamp Screw Size |
|---|---|---|---|---|---|---|---|---|
| 3/4" | .250" | .250" | 20 IN. LB. | .66 MIN. / IN. OZ. | 5° | .008" | .005" | 2-56 |
| 3/4" | .250" | 5mm | 24 IN. LB. | .54 MIN. / IN. OZ. | 5° | .008" | .005" | 2-56 |
| 1" | .250" | .250" | 55 IN. LB. | .25 MIN. / IN. OZ. | 5° | .010" | .010" | 4-40 |
| 1" | .375" | .375" | 42 IN. LB. | .35 MIN. / IN. OZ. | 5° | .010" | .010" | 4-40 |
| 1 1/4" | .250" | .250" | 120 IN. LB. | .12 MIN. / IN. OZ. | 5° | .010" | .010" | 6-32 |
| 1 1/4" | .375" | .375" | 103 IN. LB. | .24 MIN. / IN. OZ. | 5° | .010" | .010" | 6-32 |
* Bore diameters are +.001" -.000".
** Maximum torque includes both static and dynamic torque. It should not be exceeded by the peak acceleration and deceleration forces encountered during sudden stops or reversals.
*** Torque and wind-up tests are measured at maximum misalignment.
These flexible servo couplings are designed to connect two shafts that may be misaligned or have axial movement and relieve the stresses that would otherwise result from a rigid coupling. This design has been tested in excess of MIL-HDBK-5A, rotaing beam, fatigue data for 2024T4 QQA-225/6. This military specification indicates that if a beam is flexed through a controlled arc (our maximum misalignment rating) for six million cycles, it has reached a point on the fatigue curve that indicates that the coupling will have infinite life. Hysteresis and lost motion is eliminated by the six short beam design. They are suitable for encoders, resolvers and motor drives.