Eddy Current Dampers

CDA InterCorp’s Rotary and Linear Eddy Current Dampers offer reliable, repeatable, and linear damping characteristics over a wide operating temperature range. These rugged devices are offered in a range of sizes and damping rates. The Eddy Current Dampers (ECD’s) are complemented with single or multiple stages of high reliability gearing. Ideal for demanding applications, these devices will operate reliably at high angular rates, accelerations and radial loads.

Imperial Units (Dimensions in Inches)
Damper
Type
A B C D E F G Weight
(Oz)
Inertia
(Oz-In-s2)
Coulomb
Friction
(Lb-In)
Damping
Rate
(Lb-In-sec/rad)
Type 03 0.75 0.62 0.081 0.5 0.04 0.125 0.78 1.2 9.50 E-06 3.0 E-03 2.58 E-04
Type 04 1 0.828 0.11 0.625 0.125 0.187 0.995 2.8 3.70 E-05 7.3 E-03 1.15 E-03
Type 05 1.25 1.03 0.129 0.75 0.125 0.25 1.28 5 1.00 E-04 1.3 E-02 3.70 E-03
Type 06 1.5 1.25 0.149 0.875 0.125 0.25 1.55 8.5 2.40 E-04 2.6 E-02 9.30 E-03
Type 08 2 1.67 0.177 1.125 0.125 0.375 1.911 19 1.00 E-03 5.0 E-02 4.98 E-02
Type 10 2.5 2.08 0.266 1.5 0.125 0.5 2.17 32 3.38 E-03 1.0 E-01 1.03 E-01
Type 12 3 2.5 0.266 1.75 0.125 0.5 2.5 64 7.78 E-03 2.0 E-01 2.54 E-01

System International (Dimensions in mm)
Damper
Type
A B C D E F G Weight
(kg)
Inertia
(kg-m2)
Coulomb
Friction
(Nmm)
Damping
Rate
(Nm-sec/rad)
Type 03 19.05 15.75 2.06 12.7 1.02 3.18 19.81 0.037 6.71 E-08 3.4 E-04 2.91 E-05
Type 04 25.4 21.03 2.79 15.875 3.18 4.75 25.27 0.078 2.61 E-07 8.3 E-04 1.30 E-04
Type 05 31.75 26.16 3.28 19.05 3.18 6.35 32.51 0.142 7.06 E-07 1.5 E-03 4.18 E-04
Type 06 38.1 31.75 3.78 22.225 3.18 6.35 39.37 0.241 1.69 E-06 2.9 E-03 1.05 E-03
Type 08 50.8 42.42 4.5 28.575 3.18 9.53 48.54 0.54 7.06 E-06 5.6 E-03 5.63 E-03
Type 10 63.5 52.83 6.76 38.1 3.18 12.7 55 0.91 2.39 E-05 1.1 E-02 1.16 E-02
Type 12 76.2 63.5 6.76 44.45 3.18 12.7 63.5 1.8 5.49 E-05 2.3 E-02 2.87 E-02

Notes:
1. Pilot to pinion concentricity = 0.0007 inches [0.018 mm] TIR.
2. Flange to pinion perpendicularity = 0.0007 inches [0.018 mm] TIR.
3. Composite error of assembled pinion = 0.011 inches [0.028 mm] TIR.
4. Other mounting configurations are available on request.
5. Damping rates tabulated at +25° C.