GOST 16502-83 PDF

Full title and description

GOST 16502-83 — Основные нормы взаимозаменяемости. Передачи глобоидные. Допуски (English title: Basic requirements for interchangeability — Globoid (globoidal) worm gears. Tolerances).

Abstract

This standard establishes tolerance and accuracy requirements for globoid (globoidal) worm gears and gear pairs (without housings), including dimensional and geometric tolerances, limits for contact/engagement characteristics and recommended accuracy grades for manufacture and inspection. It is intended to ensure interchangeability and predictable running/contact behaviour of globoid worm drives.

General information

• Status: Active (действует) — retained in national/regional databases as currently applicable in the consolidated collections.
• Publication date: Designation year 1983; put into effect 01 January 1986.
• Publisher: Государственный комитет СССР по стандартам (State Committee for Standards of the USSR — Gosstandart).
• ICS / categories: Mechanical systems and components for general use — Gears and transmissions (ICS 21.200).
• Edition / version: Original GOST designation 16502-83 (introduced in the 1980s); commonly cited as the 1983 edition implemented 1986.
• Number of pages: ~42 pages (published document size commonly listed as 42 pages in standard catalogues).

Scope

Applies to globoid worm transmissions and globoid worm pairs without housings whose nominal worm thread surfaces are generated by a straight line or by a generating surface of revolution produced by a straight line, with a shaft-centre angle of 90°. The standard sets the tolerances and permissible deviations for dimensional, positional and form parameters that affect engagement and interchangeability; it is intended for design, manufacture and acceptance control of such gear pairs.

Key topics and requirements

• Accuracy grades and tolerance tables for primary geometric dimensions (e.g., pitch/lead, pitch diameter equivalents for enveloping wheels, interaxis distance tolerances) by accuracy class. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Permissible deviations of tooth (thread/wing) profiles, helix/lead errors and runout affecting contact patterns.
• Norms for contact area/footprint and related indicators used to assess quality of meshing. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Limits for relative position of worm and wheel (axial/mid‑plane displacements) and rules for increasing allowances when bearings permit axial freedom. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Guidance on when full direct inspection of every parameter can be substituted by manufacturer’s established quality-control systems. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Reference to manufacturing/inspection practices for ensuring tolerances (including notes on tooling/one‑pass generation of the wheel envelope). (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Typical use and users

Used by gear designers, mechanical engineers, manufacturing engineers, quality/inspection departments and suppliers of worm drives where globoid (globoidal) worm gears are employed — for example in heavy machinery, steering mechanisms, hoisting equipment and specialized transmissions requiring compact high‑reduction gearing with specific contact characteristics. It is referenced during design specification, production tolerancing and acceptance testing to ensure interchangeability and predictable contact behaviour.

Related standards

Typical related documents cited by or used with this standard include the normative specification for form/geometry of worm threads (e.g., ГОСТ 24438-80 as referenced in the scope) and other GOSTs covering machine-element tolerances, measurement methods and interchangeability rules. When applying GOST 16502-83 practitioners often consult complementary standards on gear terminology, measurement and quality grades.

Keywords

GOST 16502-83; globoid worm; globoidal worm gear; worm wheel; tolerances; interchangeability; accuracy grades; contact pattern; pitch/lead tolerances; runout; gear manufacturing; Gosstandart.

FAQ

Q: What is this standard?

A: GOST 16502-83 is the Soviet-era state standard that sets basic interchangeability norms (tolerances) for globoid (globoidal) worm gears and gear pairs; it establishes dimensional and geometric tolerance limits and related acceptance rules.

Q: What does it cover?

A: It covers tolerances for the main dimensions and geometry that affect engagement of globoid worm drives (pitch/lead equivalents, profile and helix deviations, runout, contact area indicators, allowable positional displacements and related inspection notes). The text contains tables of limits by accuracy grade and module ranges.

Q: Who typically uses it?

A: Gear designers, manufacturers of worm drives, quality control and inspection labs, and engineers responsible for specifying or verifying interchangeability and mesh/contact performance of globoid worm gear sets.

Q: Is it current or superseded?

A: The document is commonly listed in standards catalogues as active (действует) in consolidated databases; it is an historic GOST (1983 designation, effective 01.01.1986) and remains the normative reference for the subject unless a specific national/regional replacement or later revision is published. Users should check their national standards body or consolidated databases for any later amendments or regional replacements before final application.

Q: Is it part of a series?

A: It belongs to the family of GOST standards addressing interchangeability and gear transmissions and is normally used together with other GOSTs covering worm/worm‑wheel geometry, general tolerancing and measurement procedures (for example the normative references cited inside the standard such as ГОСТ 24438-80).

Q: What are the key keywords?

A: Globoid (globoidal) worm, worm wheel, tolerances, interchangeability, accuracy grade, contact pattern, pitch/lead, runout, gear inspection, GOST 16502-83.