DCDE12-4-3-A
$185.25
ea
Ruland DCDE12-4-3-A, 1/4" x 3/16" Double Disc Coupling, Aluminum, Clamp Style, Electrically Isolating, 0.750" OD, 1.189" Length
PRODUCT SPECIFICATIONS
Ruland DCDE12-4-3-A is an electrically isolating double disc coupling with 1/4" x 3/16" bores, 0.750" OD, and 1.189" length. It is zero-backlash and has a balanced design for reduced vibration at high speeds. The double disc design is comprised of two anodized aluminum hubs, two sets of thin stainless steel disc springs, and an acetal center spacer allowing each disc to bend individually and accommodate all types of misalignment. The acetal center spacer isolates the two hubs preventing the incidental transfer of current from the motor to the driven component or vice versa. DCDE12-4-3-A is lightweight and has low inertia making it well suited for applications with speeds up to 10,000 RPM. Hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. Ruland manufactures DCDE12-4-3-A to be torisionally rigid and an excellent fit for precise positioning stepper servo applications commonly found in semiconductor, solar, printing, machine tool, and test and measurement systems. It is machined from solid bar stock that is sourced exclusively from North American mills and RoHS2 and REACH compliant. DCDE12-4-3-A is manufactured in our Marlborough, MA factory under strict controls using proprietary processes.
PRODUCT SPECIFICATIONS
| Dimensions | |||
|---|---|---|---|
Large Bore B1 |
0.250 in |
Small Bore B2 |
0.188 in |
B1 Shaft Penetration |
0.573 in |
B2 Shaft Penetration |
0.573 in |
Outer Diameter OD |
0.750 in |
Bore Tolerance |
+.001 in / -.000 in |
Length L |
1.189 in |
Hub Width LH |
0.418 in |
| Fastening Hardware | |||
Forged Clamp Screw |
M2.5 |
Screw Material |
Alloy Steel |
Hex Wrench Size |
2.0 mm |
Screw Finish |
Black Oxide |
Seating Torque |
1.21 Nm |
Number of Screws |
2 ea |
| Performance Specifications | |||
Static Torque |
25 lb-in |
Angular Misalignment |
2.0° |
Dynamic Torque Non-Reversing |
12.5 lb-in |
Parallel Misalignment |
0.004 in |
Dynamic Torque Reversing |
6.25 lb-in |
Axial Motion |
0.008 in |
Torsional Stiffness |
51 lb-in/Deg |
Maximum Speed |
10,000 RPM |
| Additional Information | |||
Material Specification |
Hubs: 2024-T351 Bar, Disc Springs: Type 302 Stainless Steel, Center Spacer: Acetal |
Temperature |
-10°F to 150°F |
Finish Specification |
Sulfuric Anodized MIL-A-8625 Type II, Class 2 and ASTM B580 Type B Black Anodize |
Manufacturer |
Ruland Manufacturing |
Country of Origin |
USA |
Weight (lbs.) |
0.0334 |
UPC |
63452908807 |
||
| Product Notes | |||
Note 1 |
Stainless steel hubs are available upon request. |
Note 2 |
Torque ratings are at maximum misalignment. |
Note 3 |
Performance ratings are for guidance only. The user must determine suitability for a particular application. |
Note 4 |
Torque ratings for the couplings are based on the physical limitations/failure point of the disc springs. Under normal/typical conditions the hubs are capable of holding up to the rated torque of the disc springs. 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 disc springs. Keyways are available to provide additional torque capacity in the shaft/hub connection when required. Please consult technical support for more assistance. |
