Nº de dentes (ação poliédrica)Larg. Diâmetro do passoLarg. Diâmetro externoLarg. Largura do cuboTamanhos de orifício disponíveis
polmmpolmmpolmmRedondo em pol1Quadrado polRedondo mm1Quadrado mm
12 (3,41%)2,3582,4611,0251-7/16
12 (3,41%)2,6662,7701,0251-7/16
12 (3,41%)3,0763,1781,0251-7/16
12 (3,41%)3,3843,4871,0251-7/16
12 (3,41%)3,7943,8961,0251-7/16
12 (3,41%)4,01024,11041,0251-7/16
12 (3,41%)4,41124,51131,0251-7/16
12 (3,41%)4,71194,81221,0251-7/16
12 (3,41%)5,11305,11311,0251-7/16
12 (3,41%)5,41375,51391,0251-7/16
12 (3,41%)5,81475,81481,0251-7/16
12 (3,41%)6,21576,21571,0251-7/16
12 (3,41%)6,51656,51651,0251-7/16
12 (3,41%)6,91756,91741,0251-7/16
  1. As dimensões os tamanhos de chaveta no sistema imperial nas engrenagens com furo redondo atendem à norma ANSI B17.1-1967 (R1989), e os tamanhos de chaveta no sistema métrico atendem à norma DIN 6885.