DCDE12-4-3-A

$185.25 ea

Quantity	Price (USD)
1	$185.25 ea
10	$138.94 ea
25	$103.74 ea
50	$62.29 ea
100	Request Quote

Built to Order Lead Time: 0-2 Days

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Ruland DCDE12-4-3-A, 1/4" x 3/16" Double Disc Coupling, Aluminum, Clamp Style, Electrically Isolating, 0.750" OD, 1.189" Length

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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 -23°C to 65°C
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.
Prop 65	WARNING This product can expose you to chemicals including Ethylene Thiourea and Nickel (metallic), known to the State of California to cause cancer, and Ethylene Thiourea known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.