Hello. Sign In
Standards Store

NAS727

1st Edition, May 31, 2012

Complete Document

GEAR, SPUR, 20° INVOLUTE, LOW INERTIA, 48 AND FINER PITCH



View Abstract
Product Details
Document History

Detail Summary

Active, Most Current

EN
Format
Details
Price (USD)
Secure PDF
Single User
$48.00
Print
In Stock
$48.00
PDF + Print
In Stock
$76.80 You save 20%
Add to Cart

Product Details:

  • Revision: 1st Edition, May 31, 2012
  • Published Date: May 31, 2012
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Aerospace Industries Association (AIA/NAS)
  • Page Count: 6
  • ANSI Approved: No
  • DoD Adopted: No
  • FSC Code: 3020 - Gears, Pulleys, Sprockets, and Transmission Chain

Description / Abstract:

This specification covers blank configurations, gear data and tolerances for 20° fine pitch spur gears having standard addendums as depicted in NAS726 and used extensively in airborne computers and control instruments where low-inertia, low-torque characteristics are required. The specification is not intended to cover gears wherein the gear drives a pinion having less than 17 teeth which require special attention to be given to the relative length of the arc of recess to the arc of approach.

Classifications. Because of the transient nature of gear classification terminology resulting from rapid technical advances, this specification and its related standard avoids the use of AGMA-ASA gear quality classifications. Instead numerical values for total composite error and tooth-to-tooth composite error according to AGMA Standards are used to identify gear quality.