Heavy duty single-acting linear electromagnets. Single-acting linear electromagnets for controllers, electrical equipment, machines, safety applications, etc. Designed for in excess of 5 million operations. Sliding core with PTFE layer inside a metal tube. Equipped with spring return (removable), push or pull model. Permanent duty (duty factor 100%) for voltages lower than or equal to rated voltage. During intermittent operation, greater force can be obtained using a power supply with higher voltage (in compliance with the applicable standards).