Recovery Equipment
  • KUNZ Spring Tester | Aircraft Brake Spring Testing

    KUNZ Spring Tester

KUNZ Spring Tester

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Key Tasks

  • Testing and verification of spring force and compression characteristics in aircraft brake components
  • Automated Go/No-Go detection of worn, fatigued or deformed springs
  • Each test programme supports up to three compression heights or spring loads
  • 7-inch touchscreen HMI with automatic error alerts – no continuous monitoring required

Overview

The KUNZ Spring Tester is a robust and precise solution designed for the testing and evaluation of springs used in aircraft brake systems. It enables accurate measurement of spring force and compression characteristics, ensuring that components meet strict OEM specifications and aviation safety requirements.

The Spring Tester features a 7-inch touchscreen HMI for intuitive programme selection and operation. Each spring programme can include up to three different compression heights or spring loads, making the system highly flexible and adaptable for a wide range of spring types – all without complex setup or additional equipment.

The system automatically alerts the operator in the event of an error or out-of-specification result, eliminating the need for continuous monitoring and allowing technicians to perform other tasks in parallel. With a compression speed of 300 mm/min, a maximum spring height of 180 mm and a maximum compression force of 5 kN, the Spring Tester covers the full range of springs used in commercial aircraft brake assemblies.

Main Benefits

  • Automated Go/No-Go detection – no manual judgement required for pass/fail decisions
  • Each programme supports up to three compression heights or spring loads for maximum flexibility
  • 7-inch touchscreen HMI for intuitive, fast programme selection
  • Automatic error alerts allow operators to perform parallel tasks – improves productivity
  • Very compact footprint: 621 × 210 × 636 mm – fits on any workbench or shelf
  • Compression speed 300 mm/min, max. spring height 180 mm, max. force 5 kN
  • Robust and durable construction for long-term use in MRO environments
  • Compliant with OEM specifications and aviation maintenance standards

Fits Anywhere – Handles Every Spring in the Brake Assembly

The KUNZ Spring Tester is built for efficiency in any workshop environment. Its very compact footprint – just 621 × 210 × 636 mm – allows it to fit on virtually any workbench or shelf, making it easy to integrate into an existing brake maintenance workflow without requiring dedicated floor space.

Each spring programme can include up to three different compression heights or spring loads, making the Spring Tester highly flexible and adaptable for the full range of springs found in commercial aircraft brake assemblies – all without needing complex setup or additional tooling.

KUNZ Spring Tester brake spring adapters
KUNZ Spring Tester Software | Aircraft brake spring testing

Automated Alerts – Efficiency at Your Fingertips

Operation is simple and fast thanks to the 7-inch touchscreen HMI, which allows convenient selection and switching between test programmes. The system automatically alerts the operator if a spring falls outside the specified parameters, so continuous monitoring is not required.

This means technicians can initiate a test and move on to other tasks, returning only when the system signals a result. The combination of automated testing, automatic alerts and a compact design makes the KUNZ Spring Tester one of the most time-efficient tools in any aircraft brake maintenance workshop.

Product Information

Dimensions
Dimensions (L x W x H) in mm (in)
621 (24.5) x 210 (8.3) x 636 (25)
Weight in kg (Ib)
100 (220.5)
Compression speed in mm/min
300
Maximum spring height in mm (in)
180 (7)
Max. compression force in kN
5
Test sensor accuracy in % full scale
0.1 (± 5 N)
Electrical power requirments
The KUNZ Spring Tester comes with a factury set power requirement of 50/60 Hz, 240V 1-phases, 16 ampere fuse. However, we will always need to know your local power requirements in order to check for compatability. In general, your local power requirements will always be available with KUNZ machines in return of extra costs.

Features

  • Very low footprint, fits in nearly any shelf or on any desk
  • Up to three different compression heights/ spring loads can be added for each spring program
  • Fast and convenient selection of different programs with a 7" touchscreen HMI
  • Automatic alarm in case of errors. Operator will not need to monitor the unit at all times and therefore can perform other tasks, saving on time and improving efficiency
  • The test result is stored and can be downloaded from the USB-Port
  • No additional computer or other external device is necessary for the operation of the Spring Tester
  • Improved Health and Safety due to safety mechanism that stops testing process if door is opened
  • PLexiglas door protects the operator from flying fragments in case a spring breaks
  • Severely improves workshop safety when compared to regular manual methods

Part Numbers

KUNZ Spring Tester: 235.2000

Product Updates

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