---
title: "Size-40-VWZ"
url: "https://zimm.com/product/size-40-vwz/"
datePublished: "2018-07-25T08:23:56+00:00"
dateModified: "2026-10-14T10:36:35+00:00"
author: ZIMM GmbH
lang: en
canonical: "https://zimm.com/product/size-40-vwz/"
markdown: "https://zimm.com/ai/product/size-40-vwz.md"
image: "https://zimm.com/wp-content/uploads/2022/07/VWZ.png"
serie: vwz
product_title: "Size-40-VWZ | Connecting shaft"
categories: "Connection technology, Connecting shafts VWZ"
documents: yes
---

## Technical data

- Size: VWZ-40
- Rated torque: 21 Nm
- Max. torque: 42 Nm
- Shore hardness star: 64D
- Material: High-tensile aluminium (INOX on request)
- Torsional stiffness (per star) CTdyn Nm/rad: 3700
- Torsional stiffness (per tube) CTdyn Nm/rad: 2332
- Clamping screw size: M5
- Clamping screwtightening torque: 8 Nm
- Weight both couplings kg: 0.36
- Tube/m kg: 0.76
- Coupling type: KUZ-KK-24
- Screw jack sizes: 5 kN, 10 kN, 25 kN, 35 kN
- Diameter: 20 mm
- Min Length: 133 mm
- Max Length: 4000 mm

## Documents

- [Connecting-shaft-VWZ](https://zimm.com/wp-content/uploads/2024/12/Connecting-shaft-VWZ.pdf)
- [Length-calculation-VWZ](https://zimm.com/wp-content/uploads/2024/12/Length-calculation-VWZ.pdf)
- [Rigid & flexible hub, VWZ for pedestal bearing use STL](https://zimm.com/wp-content/uploads/2024/12/Rigid-flexible-hub-VWZ-for-pedestal-bearing-use-STL.pdf)
- [Connection-technology-for-actuators](https://zimm.com/wp-content/uploads/2024/12/connection-technology-for-actuators.pdf)

## Quality

ZIMM Size-40-VWZ is manufactured at the headquarters of ZIMM GmbH in Lustenau. Development and manufacture are part of the ISO 9001:2015-certified processes for industrial connection technology.