• KUNZ UTT-L | single spindle nut runner for aircraft wheel loosening

KUNZ UTT-L - Universal Torquing Tool-Loosening

Key Tasks

  • Electronic loosening of aircraft wheel bolts and nuts during wheel disassembly
  • Designed to protect bolt and nut longevity by avoiding shock loads
  • Single-spindle nut runner with push-button operation and hydraulic lift for repositioning
  • Compatible with KUNZ UAS and third-party disassembly stands

Overview

The KUNZ UTT-L Universal Torquing Tool Loosening is an electronic nut loosening solution specifically designed for aircraft wheel disassembly. Unlike conventional impact wrenches, the UTT-L applies controlled, progressive loosening force rather than shock loads – significantly extending the service life of bolts and nuts and reducing the risk of thread damage.

Its single-spindle design provides precise, controlled loosening of each bolt in sequence. Push-button operation and hydraulic lift make repositioning to the next bolt fast and effortless.

The UTT-L is fully compatible with the KUNZ UAS and can also be paired with third-party disassembly stands, making it a flexible upgrade for any workshop performing regular aircraft wheel disassembly.

Main Benefits

  • Electronic loosening eliminates shock loads – protects bolts, nuts and threads from damage
  • Extends service life of wheel hardware by avoiding impact wrench wear
  • Push-button operation for ease of use and consistent results
  • Hydraulic lift for fast, effortless repositioning between bolts
  • Compatible with KUNZ UAS and third-party disassembly stands
  • Reduces physical effort for operators compared to manual impact wrenches
  • Improves overall disassembly process reliability and safety

Protect Your Hardware – Electronic Loosening Without Shock Loads

Conventional impact wrenches apply sudden shock loads to wheel bolts and nuts during loosening – a process that may be fast but causes cumulative wear and increases the risk of thread damage over time.

The KUNZ UTT-L takes a different approach. Its electronic loosening mechanism applies controlled, progressive force, protecting the integrity of bolts and nuts across their entire service life. The result is longer-lasting hardware, fewer replacements and lower long-term maintenance costs.

It emits significantly less vibration than conventional impact wrenches, resulting in smoother handling and better control. At the same time, it ensures less strain on the operator and nuts, reducing fatigue and minimizing wear on components. Additionally, the KUNZ UTT-L generates less carbon dust, contributing to a cleaner and safer working environment.

KUNZ UTT-L | Aircraft Wheel Loosening
KUNZ UTT-L | Aircraft Wheel Loosening

Seamless Integration into the KUNZ Disassembly Workflow

The KUNZ UTT-L is designed to work seamlessly with the KUNZ UAS Universal Assembly and Disassembly Stand, forming a complete and ergonomic disassembly workstation. Its push-button operation and hydraulic lift allow the operator to work quickly and consistently, reducing cycle times while maintaining the highest standard of care for aircraft wheel hardware.

Product Information

Dimensions
Dimensions of control unit (L x W x H) in mm (in)
650 (25.6) x 650 (25.6) x 1.800 (71)
Height of Nutrunner in mm (in)
2.370 (93)
Operating diameter of Nutrunner in mm (in)
1.964 (77.3)
Control unit operating system
Windows 7 Professional
Max. speed in rpm
160
Sound level in dB
<70
Square drive in mm (in)
19 (0.75)
Spring travel in mm (in)
50 (2)
Angle of rotation resolution
Electrical power requirments
The KUNZ UTT-L comes with a factury set power requirement of 50/60 Hz, 400V 3-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

  • Electronic torque system for easy and comfortable disassembly.
  • Compatible with KUNZ UAS and therefore supporting all kinds of wheels supported by KUNZ UAS
  • Can also be paired with third party disassembly stands
  • Designed to reduce human error and meet documented maintenance requirements.
  • Improves longevity of bolts and nuts by not applying shock loads like regular impact wrenches do
  • Single spindle nut runner
  • Easy operation with push buttons and hydraulic lift of the unit to rotate to the next bolt

Part Numbers

KUNZ UTT-L - Universal Torque Tool - Loosening: 184.0000

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