ISSDL

LORD RD-8041-1

The LORD RD-8041-1 long stroke damper is a continuously variable damper controlled by the increase in yield strength of the MR fluid in response to magnetic field strength.

	English	SI
Stroke	2.91 in	74 mm
Extended Length	9.76 in	248 mm
Max Tensile Strength	2000 lbf	8896 N
Damper Force (5 cm/sec @ 1 A)	>550 lbf	>2447 N
Damper Force (20 cm/sec @ 0 A)	<150 lbf	<667 N
Max Operating Temperature	160° F	71° C
Input Current (Continuous for 30 Seconds)	1 A max	1 A max
Input Current (Intermittent)	2 A max	2 A max
Input Voltage	12 VDC	12 VDC
Resistance (@ Ambient Temperature)	5 Ω	5 Ω
Resistance (@ Max Operating Temperature)	7 Ω	7 Ω

200KN MR Damper

This large-scale MR damper is manufactured by LORD corporation. It can provide control force of over 200 kN (45 kip) with a low voltage, current driven command signal.

	English	SI
Stroke	23 in	584 mm
Extended Length	58 in	1.47 m
Weight	615 lbf	2736 N
Damper Force	45 kips	200 kN
Coil Resistance	4.8 Ω	4.8 Ω
Coil Inductance	≈ 5 H	≈ 5 H

LORD Wonderbox

The Wonder Box provides a closed-loop current control to compensate for changing electrical loads up to the limits of the power supply.

Input Receptacle	2.1 mm Female
Pulse With Modulation Frequency	30 kHz
Input Voltage/Output Current (4 Ohm)	~ 0.4-0.6 V / 0 mA
	2 V / 750 mA
	4.3 V / 1800 mA
Input Voltage/Output Current (8 Ohm)	~ 0.4-0.6 V / 0 mA
	1.6 V / 600 mA
	3.2 V / 1300 mA
Max Output Current	2 A

Input	12 VAC
Input	50-60 Hz
Output	72 VDC
	3 A
	220 W

MR Dampers

LORD RD-8041-1

200KN MR Damper

LORD Wonderbox

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