---
title: "Safety with screw jacks – use of the safety nut"
url: "https://zimm.com/safety-with-screw-jacks-use-of-the-safety-nut/"
datePublished: "2025-05-12T07:07:00+00:00"
dateModified: "2026-06-29T06:05:02+00:00"
author: Florian Wenger
lang: en
canonical: "https://zimm.com/safety-with-screw-jacks-use-of-the-safety-nut/"
markdown: "https://zimm.com/ai/post/safety-with-screw-jacks-use-of-the-safety-nut.md"
categories: Podcasts
image: "https://zimm.com/wp-content/uploads/2025/05/zimm-podcast-securityinspection.png"
---

https://youtu.be/zFsnwI6DQ2A?si=53CNkD_2Htjvno1e

Drive systems must function reliably in safety-relevant applications. Our safety nut ensures that there is no uncontrolled load reduction in the event of a failure of the load-bearing thread.

#### What requirements apply to screw jacks in safety-critical applications?

In many industrial applications, drive systems must fulfil specified safety standards - especially for vertically guided loads.

#### What safety solution does ZIMM offer for screw jacks?

With the safety nut, we offer a tested safety component that is available for both spindle versions:

- Rotating spindle
- Translating spindle

#### How does the safety catch nut work?

The catch nut moves with the load during operation. If the load-bearing thread fails, it immediately takes up the load and prevents the movement unit from dropping.

### Further links

[Screw jacks](https://zimm.com/screw-jacks/)

[Applications](https://zimm.com/applications/)

[Safety nut SIFA-R](https://zimm.com/product/safety-nut-sifa-r/)

## Videos

### Sicherheit bei Spindelhubgetrieben – Einsatz der Sicherheitsfangmutter

In this video, viewers will learn about the importance of the safety nut in screw jacks, ensuring reliable operation and load security in safety-critical applications, especially during potential thread failures.

- [Watch on YouTube](https://www.youtube.com/watch?v=zFsnwI6DQ2A)