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DIN 3961

1978 Edition, August 1, 1978

Complete Document

Tolerances for Cylindrical Gear Teeth; Bases

Includes all amendments and changes through Change/Amendment , August 1978


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Product Details:

  • Revision: 1978 Edition, August 1, 1978
  • Published Date: August 1978
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: Deutsches Institut fur Normung E.V. (DIN)
  • Page Count: 12
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

DIN 3962 Part 1 to Part 3 and DIN 3963 contain tolerances for gear teeth on cylindrical gears of module 1 to 70 mm and with reference circle diameters d up to 10 000 mm, graded in 12 gear tooth qualities. The tolerances apply regardless of the pressure angle. For checking tooth thickness and determining backlash, the working pressure angles and helix angles have to be taken into account, see DIN 3967. For d exceeding 10 000 mm tolerances can be agreed which can be calculated by using the formulae given in Section 3.5.1 and in Section 3.5.2.

In the case of racks, the tolerances for their teeth shall not exceed those for the teeth of the mating gear. If the manufacturer has no knowledge of the mating gear, he may make the rack length equal to the mating gear circumference.