Spring plungers with rolling-off function engineered by Halder
Minimum wear on the counter piece
Electrical insulation thanks to plastic-mounted ball
Spring plungers are suited for a whole plethora of applications. Used for fixing, positioning, securing and locking moving parts, they assist with fine adjustment and apply pressure as a push plunger or for ejection. To reduce wear on the counter piece to a minimum, Erwin Halder KG has designed a version with a moving ball, extending the range of possible applications for their spring plungers even further.
Whether in tool or machine construction, in medical environments or the electronics industry and a host of additional industries - spring plungers are used anywhere where components have to be installed and removed or movable parts have to be locked. Especially industries where cleanliness is pivotal, such as medical engineering, need to be able to rely on equipment that can guarantee zero abrasion on the counter piece to be fixed. Minimum wear is also of superior importance when it comes to extending a material's service life, e.g. when components made of soft materials such as aluminium must be locked.
"Until now, there was virtually no way to reduce wear in this area. This is why we have come up with innovative plungers that include a moving ball", explains Bernd Janner, Sales Manager at Erwin Halder KG. Just as all other spring plungers, they are composed of a body that houses a spring and ball in its interior. The feature that sets these new plungers apart, however, is the bearing of the ball. It allows for a rolling-off motion that minimises wear on the counter piece. The rolling-off function also has a positive effect on the haptic and acoustic aspects of the latching action.
Multiple versions available from stock
The body is generally made from free cutting steel, blackened or stainless steel (1.4305), while spring and ball are made, respectively, from stainless steel and hardened ball-bearing steel or hardened stainless steel. "Another advantage that these new spring plungers deliver is the electrical insulation that is owed to the plastic-mounted ball. Finally, they are also suitable for use across an extensive temperature range from -30°C to 90°C", adds Bernd Janner.
Aside from models with standard spring force, Erwin Halder KG also has versions with increased spring force in their portfolio. The latter are primarily used in areas where parts need to be locked in position with even greater security. All spring plungers are tested specially for spring deflection and spring force.
The stocked spring plungers with moving ball are available with diameters of M5, M6, M8, M10, M12, and M16. When it comes to their installation options, users can choose between models that come with a slot or an internal hexagon. If requested, the spring plungers can also be delivered with thread locking and as custom designs.