---
title: "50 kN-40×7-R-Trapezoidal screw"
url: "https://zimm.com/product/50kn-40x7-r-trapezoidal-screw-gsz/"
datePublished: "2018-07-17T11:31:53+00:00"
dateModified: "2026-10-14T10:36:30+00:00"
author: ZIMM GmbH
lang: en
canonical: "https://zimm.com/product/50kn-40x7-r-trapezoidal-screw-gsz/"
markdown: "https://zimm.com/ai/product/50kn-40x7-r-trapezoidal-screw-gsz.md"
image: "https://zimm.com/wp-content/uploads/2018/07/gsz-r-trapezoidal-screw-50kn-40x7-1.png"
serie: gsz
product_title: "50 kN-40x7-R-Trapezoidal screw | GSZ-Series | Screw jack"
categories: "GSZ-Series | Screw jack, R-Trapezoidal screw"
attributes: "Screw: Rotating (R); Screw Jack Series: GSZ; Size: 50 kN; Screw Jack Version: Trapezoidal Screw"
documents: yes
---

## Technical data



Size: 50 kN, Screw size standard: TR 40x7, Screw Jack, Nominal speed: 1500 rpm, Max. drive shaft speed: 1800 rpm, Housing material: GGG-50, corrosion-resistant, Worm shaft: Steel, case-hardened, ground, Weight of screw jack body: 15 kg, Weight of screw/m: 8 kg, Gearbox lubrication: Synthetic fluid grease, Screw lubrication: Grease lubrication, Gearbox operating temperature: max. 60°, higher on request, Moment of inertia: N: 2.49 kg cm² / L: 1.73 kg cm², Input torque (at 1500 rpm): max. 31.5 Nm / max. 10.4 Nm, Drive-through torque: max. 260 Nm, Stroke per drive shaft rotation: N: 1.00 mm / L: 0.25 mm, Drive ratio: N: 7:1 / L: 28:1, Screw: Rotating (R)

## Documents

- [R-Trapezoidal-screw-GSZ-series-50kn](https://zimm.com/wp-content/uploads/2024/12/R-Trapezoidal-screw-GSZ-series-50kn.pdf)
- [Gearbox lubrication](https://zimm.com/wp-content/uploads/2025/09/Gearbox-lubrication.pdf)

## Quality

ZIMM 50 kN-40×7-R-Trapezoidal screw is manufactured at the headquarters of ZIMM GmbH in Lustenau. Development and manufacture are part of the ISO 9001:2015-certified processes for industrial screw jacks.