NS EN ISO 13691 : 1ED 2002

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Basic design
  5.1 General
  5.2 Gear rating
  5.3 Gear elements
  5.4 Casings
  5.5 Casing connections
  5.6 Dynamics
  5.7 Bearings and bearing housings
  5.8 Lubrication
  5.9 Materials
  5.10 Nameplates and rotation arrows
6 Accessories
  6.1 General
  6.2 Couplings and guards
  6.3 Mounting plates
  6.4 Controls and instrumentation
  6.5 Piping and appurtenances
  6.6 Special tools
7 Inspection, testing and preparation for shipment
  7.1 General
  7.2 Inspection
  7.3 Testing
  7.4 Preparation for shipment
8 Vendor's data
  8.1 General
  8.2 Proposals
  8.3 Contract data
Annex A (informative) Special-purpose gear unit data
         sheets
Annex B (informative) Lateral critical speed map and mode
         shapes for typical rotor
Annex C (informative) Couplings for high-speed gear units
Annex D (informative) Vendor requirements regarding drawings
         and data
Annex E (informative) Gear tooth inspection
Annex F (informative) Inspector's checklist
Annex G (informative) Relationship of tooth rating factors
         between ISO 13691, ISO 9084 and API 613
Bibliography

Specifies the minimum requirements for enclosed, precision, single and double helical, one- and two-stage speed increasers and reducers of parallel shaft design with pinion speeds of 3000 min[-1] or greater, or pitch line velocities of 25 m/s or greater, for special purpose applications.