Ruland Manufacturing
Ruland OD12/19-AT Oldham Coupling Disc
Oldham coupling disc handles 10 percent parallel misalignment with 20 in-lb torque and 4,500 RPM rating
- Handles up to 10 % parallel misalignment for demanding alignments
- 5 ° angular capacity keeps shafts running smoothly
- 4,500 RPM rating suits high-speed motion control
- Acetal disc delivers 20 in-lb continuous torque reliably
- 3 in-lb/° torsional stiffness ensures precise positioning
Ruland OD12/19-AT Oldham Coupling Disc
The Ruland OD12/19-AT is a precision Oldham coupling disc designed for motion control applications. It connects two shafts while accommodating significant parallel misalignment up to 10 percent of the coupling outside diameter. The disc is manufactured from acetal material and suits hubs with a 3/4 inch diameter. It operates at speeds up to 4,500 RPM.
High Parallel Misalignment Upgrade
This disc replaces standard couplings when parallel offset exceeds typical limits. The design handles over-standard parallel misalignment of 0.075 inch and standard parallel misalignment of 0.008 inch. The upgrade is worth it when shaft alignment cannot be held within tighter tolerances. Angular misalignment capacity is 0.5 degrees with axial motion of 0.004 inch.
Acetal Material and Torque Limits
The acetal disc provides a maximum torque rating of 20 in-lb and a break torque of 93 in-lb. Torsional stiffness is rated at 23.3 in-lb per degree. These limits define the practical operating envelope for the coupling. The component carries a California Proposition 65 warning for reproductive harm.
Highlights
- Handles up to 10 % parallel misalignment for demanding alignments
- 5 ° angular capacity keeps shafts running smoothly
- 4,500 RPM rating suits high-speed motion control
- Acetal disc delivers 20 in-lb continuous torque reliably
- 3 in-lb/° torsional stiffness ensures precise positioning
Specifications
No published specifications for this item yet.
Questions about this item
What hub diameter does the OD12/19-AT disc fit?
It is designed for a 3/4 in hub diameter and has a 3/4 in outside diameter.
How is the Oldham disc installed and what step is often missed?
Place the acetal disc between the two hubs so the tenons engage the slots; the step often missed is confirming the hubs are aligned within 0.5 degrees angular and 0.008 in parallel before tightening.
What wear should I expect and when must the disc be replaced?
The acetal disc handles up to 0.075 in parallel offset and 0.004 in axial motion; replace it if backlash increases or the disc shows cracking after prolonged 4,500 RPM operation.
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