CYLINDRICAL INVOLUTE GEARS
CALCULATION REPORT
Order Dware
Project Mixer
Sub project Gear Box
Item Stage 4 m=4
ID Pinion z14
ID Gear z61
Calculated by André Dewispelaere
Company Dware
Date 03/04/2021

Geometry calculation Symbol Unit Pinion Gear
Normal module mn mm 4.00000 4.00000
Normal diametral pitch Pdn /in 6.35000 6.35000
Number of teeth z -- 14 61
Face width b mm 60.00 60.00
Reference helix angle β °.dec 12.00000 12.00000
Helix direction -- -- right left
Profile shift coefficient x -- 0.3220 0.1057
Center distance a mm 155.000 155.000
Gear ratio u -- 4.3571 4.3571
Transverse module mt mm 4.0894 4.0894
Reference diameter d mm 57.251 249.451
Operating pitch diameter dw mm 57.867 252.133
Base diameter db mm 53.657 233.790
Addendum truncation coefficient k -- 0.000 0.000
Tip diameter da mm 67.827 258.297
Theoretical root diameter df mm 49.827 240.297
Addendum ha mm 5.288 4.423
Dedendum hf mm 3.712 4.577
Tooth depth h mm 9.000 9.000
Bottom clearance c mm 0.938 0.938
Transverse pressure angle αt °.dec 20.41032 20.41032
Transv operating pressure angle αwt °.dec 21.99001 21.99001
Normal tooth thickness sn mm 7.221 6.591
Normal crest width san mm 1.959 3.102
Normal tooth thickness at base cir sbn mm 7.620 9.833
Normal tooth thickness at V-circle svn mm 6.414 6.299
Normal space width en mm 5.346 5.976
Normal space width at tip circle ean mm 12.800 9.889
Normal space width at base circle ebn mm 4.188 1.975
Normal space width at V-circle evn mm 6.692 6.307
Transverse contact ratio εα -- 1.463 1.463
Overlap ratio εβ -- 0.993 0.993
Total contact ratio εγ -- 2.456 2.456
Ratio axial/tangential force Fa/Ft -- 0.213 0.213
Gear bounds respected -- -- yes yes
Face width/module ratio b1/mn -- 15.00 --
Face width/reference diam ratio b1/d1 -- 1.05 --
Face width/center distance ratio b1/a -- 0.39 --
High surface durability P5 PCl -- P5 --
Sum profile shift coefficients Sumx -- 0.428 0.428
Directive sum number of teeth Sumz' -- 75 75
Sum number of teeth Sumz -- 75 75
Normal pitch pn mm 12.566 12.566
Transverse pitch pt mm 12.847 12.847
Transverse base pitch pbt mm 12.041 12.041