For more than 20 years, the eAssistant from GWJ Technology has been offering a web-based calculation for machine elements according to recognised calculation methods such as DIN, ISO or ANSI/AGMA standards. The software is used successfully in more than 45 countries on 6 continents. The eAssistant offers the following calculation options:

  • Shaft calculation including strength according to DIN 743
  • Cylindrical gears (spur and helical gears) with strength calculation according to DIN 3990, ISO 6336 and AGMA 2101 with configurations gear pair, planetary gear stage and pinion / rack
  • Bevel gears (straight, helical or spiral) with strength calculation according ISO 10300
  • Cylindrical worms with globoid worm gears according to DIN 3975 and strength according to DIN 3996, ISO/TR 14521 and Niemann
  • Rolling bearing life according DIN ISO 281 including database of manufacturers SKF, NSK, SNR and KOYO
  • Interference fit according DIN 7190 including influence of temperature and centrifugal loads
  • Parallel keys / Keyways according DIN 6892
  • Involute Splines according to DIN 5480, DIN 5482, ISO 4156, ANSI B92.2M, ANSI B92.1 and NF E 22-141 with strength according to Niemann
  • Serrated shaft according to DIN 5481 and strength according to Niemann
  • Splined shaft according to DIN ISO 14, DIN 5464, DIN 5471, DIN 5472 and strength according to Niemann
  • Bolts and pins
  • Clamp connections
  • Hirth coupling
  • Timing belts with an arbitrary number of pulleys and tensioners
  • Compression springs according DIN EN 13906-1
  • Tension springs according DIN EN 13906-2
  • Bolt calculation according VDI 2230

The single calculation modules of the eAssistant for cylindrical gear pairs, planetary gear trains, bevel gears and worms can be called directly in the MESYS Shaft Calculation. This allows the calculation of a shaft system coupled by gear pairs.

A description of calculation possibilities is available in the manual. You can register for a free test version with 5h time account.

Pricing for the eAssistant is dependent on usage. There are both time limited accounts or flat rate accounts available:

Account type EUR CHF
Time limited account 10h 380 360
Time limited account 30h 900 850
Time limited account 50h 1320 1250
Time limited account 100h 2050 1950
Flat rate account 1 month 240 230
Flat rate account 6 month 720 680
Flat rate account 12 month 1280 1215