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Products  |  Engineering Mechanics and Machine Elements  |  Fundamentals of Engineering Design  |  GL 420
GL 420 Gear Assembly Unit: Combined Drives Show data sheet (pdf file) Print page
Technical Description

  This laboratory system is used to introduce combined drives and their correct assembly. The programme of exercises enables familiarisation with six different drive implementation and analysis methods: understanding the brief and the drawing, assembly, setting, adjusting, testing, and making calculations.
  The flexibility of the set-up and the modularity of the components simplifies experimentation and implementation of the students' own ideas.

  A robust tubular steel frame with a square profile and bearing elements provide the accuracy for the setting of precise gearing. All the system components are kept ready to hand and well protected in a housing system.
  GUNT offers three kits in this product series, each focussing on different aspects: GL 410, GL 420 and GL 430. Each kit is used entirely independently of the other kits within the series.

Learning Objectives / Experiments

- Familiarisation with key components and types of

  mechanical drive systems
  * dual belt drive
  * chain drive with tensioning sprocket and spur

     gear  transmission
  * dual spur gear drive
  * combined bevel gear and spur gear drive
  * combined worm and bevel gear drive
  * rack drive with spur gear drive
- Calculations on mechanical drives
- Practical set-up of various drives, linked to simple

  configuration and alignment exercises
- Reading and understanding engineering drawings,

  familiarisation with technical terminology


* Flexible and robust assembly system for mechanical

  drive systems1
* Practical orientation based on use of standard

* Quick and easy assembly with no jigs and fixtures,

   just simple tools1
* Safe drive with hand crank1
* Comprehensive well-structured instructional


Alternative products
GL 105 -- Gear Trains Model
GL 200 -- Demonstrator for Lathe Gearing Layout
GL 410 -- Gear Assembly Unit: Simple Drives
GL 430 -- Gear Assembly Unit: Step and Shift Gears
MT 110 -- Assembly Station: Spur Wheel / Worm Gear Mechanism
MT 110.02 -- Assembly Exercise: Spur Wheel / Worm Gear Mechanism
[1] Demonstration and experimental kit for laying out and assembling multiple and combined drives
[2] Dual belt drive
[3] Chain drive with tensioning sprocket and spur gear transmission
[4] Dual spur gear drive
[5] Combined bevel gear and spur gear drive
[6] Combined worm gear and bevel gear drive
[7] Rack drive with spur gear drive
[8] Hand operation with crank
[9] Usage of standard industrial parts
[10] Solid universal frame manufactured from square steel tube
Technical Data

Toothed belt pulleys: z=30, 32, 48, 60
Chain sprockets: z=20, 30, DIN 8192 ISO 10B-1
Gears: z=30, 36, 50, 60, m=2mm
Bevel gear pair: z=30, m=3mm, i=1, angle between axes 90

Dimensions and Weight
l x w x h: 1000x500x500mm (assembled frame)
Weight: approx. 91kg
Scope of Delivery

1 base frame
2x crossbars
8x bearing block, single
1 bearing block, double
1 set of drive elements, consisting of
- 4 toothed belt pulleys
- 2 toothed belts
- 2 sprockets
- roller chain
- 4 gear wheels
- 2x mitre gear set
- worm gear
- bored worm

- rack
- 2x fixing block with guide bush
- shaft
-3 shafts with square shaft end
- hand crank
- set of small items (bolts, nuts, washers, spacer

  bushes, clamp rings, reducer bushes, featherkeys,

1 set of assembly tools
1 storage case
1 set of instructional material, consisting of 
  technical description of system, complete set of

  drawings with individual parts and parts list,

  description of assembly processes, specimen


Order Details

030.42000  GL 420  Gear Assembly Unit:

                                 Combined Drives

© 2005 G.U.N.T. Gerätebau GmbH