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Ruland MDCDK25-9-9-A, 9mm x 9mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
Ruland MDCDK25-9-9-A is a clamp double disc coupling with 9mm x 9mm bores, 25.4mm OD, 34.9mm length, and 3mm x 3mm keyways. 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 a center spacer allowing each disc to bend individually and accommodate all types of misalignment. MDCDK25-9-9-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 MDCDK25-9-9-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 RoHS3 and REACH compliant. MDCDK25-9-9-A is manufactured in our Marlborough, MA factory under strict controls using proprietary processes.
| Abmessungen | |||
|---|---|---|---|
|
Bohrung (B1) |
9 mm |
Bohrung (B2) |
9 mm |
|
Passfedernut (K1) |
3 mm |
Passfedernut (K2) |
3 mm |
|
Max. Nabentiefe (B1) |
16,6 mm |
Max. Nabentiefe (B2) |
16,6 mm |
|
Außendurchmesser (OD) |
25,4 mm (1,000 zoll) |
Bohrungstoleranz |
+0,03 mm / -0,00 mm |
|
Länge (L) |
34,9 mm (1,374 zoll) |
Nabenbreite (LH) |
11,85 mm |
|
Empfohlene Wellentoleranz |
+0,000 mm / -0,013 mm |
||
| Befestigungsschraube | |||
|
Innensechskantschraube |
M3 |
Schraubenwerkstoff |
Legierter Stahl |
|
Größe Sechskantschlüssel |
2,5 mm |
Schraubenoberfläche |
Brüniert |
|
Anzugsmoment |
2,1 Nm |
Anzahl der Schrauben |
je 2 |
| Leistungsbeschreibungen | |||
|
Dynamisches Drehmoment Umkehrend |
1,40 Nm |
Winkelversatz |
2,0° |
|
Dynamisches Drehmoment Nichtumkehrend |
2,80 Nm |
Paralellversatz |
0,15 mm |
|
Statisches Drehmoment |
5,6 Nm |
Axialbewegung |
0,30 mm |
|
Torsionssteife |
6,9 Nm/Deg |
Trägheitsmoment |
3.3861 x 10-6 kg-m2 |
|
spielfrei? |
Ja |
Average Load at Max Parallel Offset |
1.84 lbf |
|
Average Slope |
2.56 lbf/in |
Ausgewogenes Design? |
Ja |
| Recommended Installation Tools | |||
|
Recommended Torque Wrench |
Recommended Hex Key |
||
|
Bearing Support Required |
Ja |
||
| zusätzliche Information | |||
|
Materialspezifikation |
Naben aus 2024-T351 Aluminium Stangenmaterial, Federscheiben aus AIS 302 / 1.4310 Rostfreiem Stahl, Zentralstück aus POM |
Temperaturbereich |
-40°C bis 93°C |
|
Spezifikation Oberflächenbehandlung |
Schwarz eloxiert nach MIL-A-8625 Type II, Class 2 und ASTM B580 Type B |
Hersteller |
Ruland Manufacturing |
|
Herkunftsland |
USA |
Gewicht (kg) |
0.080600 |
|
UPC |
634529305294 |
Tariff Code |
8483.60.8000 |
|
UNSPC |
31163008 |
||
| Produkthinweise | |||
|
Anmerkung 1 |
Stainless steel hubs are available upon request. |
Anmerkung 2 |
Torque ratings are at maximum misalignment. |
|
Anmerkung 3 |
Performance ratings are for guidance only. The user must determine suitability for a particular application. |
Anmerkung 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 |
|
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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 
