Ledex Tubular Linear Solenoids 45 50 10% Duty Cycle 70W 10% Duty Cycle 70W 25% Duty Cycle 28W 25% Duty Cycle 28W 36 40 50% Duty Cycle 14W 50% Duty Cycle 14W 100% Duty Cycle 7W 100% Duty Cycle 7W 27 30 18 20 9 10 0 2 4 6 8 10 12 0 2 4 6 8 10 12 Stroke mm Stroke mm 27.0 50 10% Duty Cycle 70W 10% Duty Cycle 70W 22.5 25% Duty Cycle 28W 25% Duty Cycle 28W 40 50% Duty Cycle 14W 50% Duty Cycle 14W 18.0 100% Duty Cycle 7W 100% Duty Cycle 7W 30 13.5 20 9.0 10 4.5 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 16 0 Stroke mm Stroke mm Force N Force N Speed ms Speed ms Ledex Tubular Solenoids STA Series has enhanced Strokes up to 64 mm design features and Life rating of 25 million improved performance actuations for STA designs Push and pull models All catalogue products manufactured after April 1, 2006 are RoHS Compliant Duty Cycle Performance Curves The performance curves Duty cycle is determined in this section serve as by: ON time/(ON + OFF guides to determine the time). solenoid size needed to For example: a solenoid is produce a desired force actuated for 30 seconds, at a given stroke, duty then off for 90 seconds. cycle, and power source. 30 sec ON / (30 Sec ON + All curves were developed The Ledex STA Series Pull versus Push Type 90 sec OFF) = 30/120 = 1/4 under the following of tubular solenoids is or 25% duty cycle. In Pull type solenoids, the standard test conditions: available in three sizes plunger is pulled into the ambient temperature Ledex tubular solenoids of 13, 20 and 26 mm solenoid coil when the of 20C, 65% relative are rated for various diameter. Both push and coil is energised. In Push humidity. duty cycles ranging from pull types are available. type solenoids, the same is continuous to 10% duty. Additionally, each size true, however, the plunger and type is available Starting Force has a shaft extension Note that maximum ON with a choice of two When determining which then pushes out time for a particular plunger configurations: an applications force through a hole in the application can be a factor flat face and 60, as well requirement, apply a 1.5 end of the solenoid case. which overrides the duty as with or without an safety factor. For example: Please note, however, that cycle rating. For example, anti-rotation flat on the a load requiring 1.0 N the magnetic field cannot at 25% duty cycle, the mounting bushing. These of force should utilise a be reversed to cause the maximum ON time for a options offer maximum solenoid providing 1.0 N x opposite action to occur. given Ledex solenoid is force for a wide range of 1.5 or 1.5 N of force. 36 seconds. If, however, applications. The new the solenoid is operated design also improves Pull Type Push Type at a cycle rate which performance and provides Shaft Plunger Plunger enables the unit to return Extension longer life than previous to ambient temperature tubular designs. They between ON cycles, then offer quiet operation and the maximum ON time is improved reliability for De-energised De-energised extended somewhat. In demanding applications the above example, this extended ON time is 44 Magnetic latching seconds. Maximum ON versions are available for Energised Energised time ratings are listed some models, and many on the individual model models are well suited for specification pages. battery operation. Ledex Solenoids www.johnsonelectric.com 1.937.454.2345 Fax: 1.937.898.8624 LINEAR Tubular