Spring 1.8x9.1x18.5mm

Spring 15016 works inside the pressure switch electrical mechanism. The 1.8x9.1x18.5 mm dimensions define wire thickness, spring diameter, and free length, so correct selection requires accurate comparison with the removed component.

APPLICATION

Compression spring 15016 is used in Kranzle electrical switches, including pressure switch mechanisms with external thread. Its role is to provide mechanical preload and return movement for the cooperating element after position change inside the switch assembly.

Consistent operation is important in this type of mechanism. The spring must fit correctly inside the seat, work in line with the axis, and maintain the proper free length. Changing dimensions or installing a random replacement spring may affect mechanism response, switching point, or return movement smoothness.

SYMPTOMS – WHEN REPLACEMENT IS RECOMMENDED

Replacing the spring makes sense when the problem affects preload, return movement, or stable operation of the switch mechanism:

• shortened, compressed, or deformed spring,
• mechanism does not return smoothly after pressure release,
• switch reacts unevenly or with delay,
• insufficient preload on the cooperating element,
• spring slips out of its seat or works at an angle,
• visible free-length difference compared to a new or working spring after disassembly.

With these symptoms, it is also worth checking the spring seat, moving mechanism element, and cleanliness of the working channel. Replacing only the spring will not solve the issue if the mechanism is mechanically blocked.

HOW TO SELECT THE CORRECT PART

The spring should be selected according to reference number 15016 and dimensions 1.8x9.1x18.5 mm. With pressure switch springs, not only length matters, but also diameter, wire thickness, and the way the spring sits inside the mechanism.

Before installation, compare:

• reference number 15016,
• dimensions 1.8x9.1x18.5 mm,
• free spring length,
• diameter relative to the seat,
• wire thickness,
• spring position inside the switch mechanism,
• condition of the component pressed by the spring.

If the spring works in an external-thread pressure switch mechanism, verify that the replacement comes from the same assembly version. A visually similar spring may fit physically but operate with different preload force.

COMPATIBILITY

Compression spring 15016 is used in Kranzle electrical switches and in external-thread pressure switch mechanisms. Selection should be based on the part number, dimensions, and comparison with the removed spring.

[faq]

Does the 1.8x9.1x18.5 mm size fully determine the correct spring?|It is the main selection parameter, but not the only one. In a switch mechanism, reference number 15016, seating method, and the cooperating component are also important.

Is a stronger spring better than the original one?|No. In an electrical pressure switch, correct compatibility with the mechanism matters more than higher preload force. A stronger spring may change switch behavior and affect smooth return movement.

[/faq]