PSMR29-12-8-A
$64.14
ea
Ruland PSMR29-12-8-A, 12mm x 8mm Four Beam Coupling, Aluminum, Set Screw Style, 28.6mm OD, 38.1mm Length
PRODUCT SPECIFICATIONS
Ruland PSMR29-12-8-A is a four beam coupling with 12mm x 8mm bores, 28.6mm OD, and 38.1mm length. It is machined from a single piece of material and feature two sets of two spiral cuts. This gives it higher torque capacity, lower windup, and larger body sizes than single beam couplings. PSMR29-12-8-A is well suited for applications such as encoders that require high positioning accuracy. This four beam spiral coupling is zero-backlash and has a balanced design for reduced vibration at high speeds of up to 6,000 RPM. All hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. PSMR29-12-8-A is made from 7075 aluminum for lightweight and low inertia. It is machined from bar stock that is sourced exclusively from North American mills and is RoHS2 and REACH compliant. PSMR29-12-8-A is manufactured in our Marlborough, MA factory under strict controls using proprietary processes.
PRODUCT SPECIFICATIONS
| Dimensions | |||
|---|---|---|---|
Large Bore B1 |
12 mm |
Small Bore B2 |
8 mm |
B1 Shaft Penetration |
17.6 mm |
B2 Shaft Penetration |
17.6 mm |
Outer Diameter OD |
28.6 mm |
Bore Tolerance |
+.025 mm / -.000 mm |
Length L |
38.1 mm |
||
| Fastening Hardware | |||
Forged Set Screw |
M5 |
Screw Material |
Alloy Steel |
Hex Wrench Size |
2.5 mm |
Screw Finish |
Black Oxide |
Seating Torque |
2.2 Nm |
Number of Screws |
4 ea |
| Performance Specifications | |||
Static Torque |
3.84 Nm |
Angular Misalignment |
3° |
Dynamic Torque Non-Reversing |
1.92 Nm |
Parallel Misalignment |
0.38 mm |
Dynamic Torque Reversing |
0.96 Nm |
Axial Motion |
0.25 mm |
Torsional Stiffness |
1.96 Deg/Nm |
Moment of Inertia |
6.349 x10-6 kg-m2 |
Maximum Speed |
6,000 RPM |
||
| Additional Information | |||
Material Specification |
7075-T651 Extruded and Drawn Aluminum Bar |
Temperature |
-40°F to 225°F |
Finish Specification |
Bright |
Manufacturer |
Ruland Manufacturing |
Country of Origin |
USA |
Weight (lbs.) |
0.1970 |
UPC |
63452903341 |
||
| Product Notes | |||
Note 1 |
Torque ratings are at maximum misalignment. |
Note 2 |
Performance ratings are for guidance only. The user must determine suitability for a particular application. |
Note 3 |
Torque ratings for the couplings are based on the physical limitations/failure point of the machined beams. Under normal/typical conditions the hubs are capable of holding up to the rated torque of the machined beams. In some cases, especially when the smallest standard bores are used or where shafts are undersized, slippage on the shaft is possible below the rated torque of the machined beams. Please consult technical support for more assistance. |
||
