H. Kuhnke Ltd, Romsey, UK
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Two Directional UD Series

Rotary Solenoids > UD Series Two Directional

This is a round design which is available in 3 standard body sizes, defined by body diameter, The range is 35,50 & 100mm.

Although any angle of travel up to 95° can be specified the range provides for 5 standard movements, 25°, 35°, 50°, 65° and 95°. Each is fixed by design.

The choice of body size wiill depend on the torque your application needs. UD series can develop up to 195Ncm (UD92, end stroke torque on 14% duty cycle). Mechanical options include through-shaft, or single-shaft, clockwise or anti-clockwise rotation, and the position of a return spring(if any).

Any DC coil voltage is possible, although the most common is 24VDC. AC operation can be achieved using a silicon bridge rectifier. In the standard Kuhnke D series, a 205 voltage is shown, representing the performance expected when using 230VAC supply and a silicon bridge rectifier.

As a guide to body size needed to achieve a particular torque select the appropriate data sheet for download from the list below

Remember that rotary solenoids have a starting torque (shown in these tables as MA) and an end torque which is higher(ME). The available torque depends on duty cycle (please see our glossary for explanations) Expressed here as a percentage

UD3: > 6.3cm end torque 4.4% at 25°
UD3: > 2.1Ncm end torque 100% at 25°
UD5: > 26Ncm end torque 4.4% at 25°
UD5: > 11.5Ncm end torque 100% at 25°
UD9: > 195Ncm end torque 14% at 25°
UD9: > 125Ncm end torque 100% at 25°

The above illustrations are taken for 25° angular travel, end torque. Starting torques are less, and all torque ratings reduce, the greater the angular travel

PDF Datasheets
UD3 Rotary Solenoids	80kb
UD5 Rotary Solenoids	83kb
UD9 Rotary Solenoids	82kb

 

Kuhnke UD two-directional rotary series circular design. 3 standard body sizes. Please see the PDF links shown at the bottom of this page for the full technical data of each body size

Part number explanation. The different variations of UD series solenoids are coded into the part number which is is made up of 9 components. We have shown these here in the headings A to I. Explanations are shown below the table.

A	B	C	D	E	F	G	H	I
UD	3	2	L	O	L	F	24VDC	100%ED
	5	3	R	R	R	M	205	SP%ED
	9	4	B	L	B	N	SP
		6
		9

A = Design Series, in this case all UD
B = Defines body width: 3 = 35mm, 5 = 50mm, and 9 = 100mm
C = Angular travel: 2 = 25°, 3 = 35°, 4 = 45°, 6 = 65°, 9 = 95°
D = Direction of rotation: L = Anti-clockwise, R = Clockwise, B = Through-shaft
E = Shoulder: O = Standard withough mounting ring, R = Optional, L = Optional
F = Return Spring: L = On anti-clockwise shaftend, R = On clockwise shaft end, O = No return spring fitted, B = Spring on both sides
G = Connections: F = Flying leads, standard 20cm, N = Plug for push on connectors
H = Nominal voltaage, usually 24VDC
I = Duty Cycle(ED is an abbreviation of the German Einschaltdauer)