ISO 9374-4:1989

Overview

ISO 9374-4:1989 - "Cranes - Information to be provided - Part 4: Jib cranes" specifies the information that a purchaser must supply when enquiring for or ordering a jib crane, and the information a manufacturer must give when tendering or supplying a jib crane. The standard ensures that the crane design, selection and installation match the intended service, site constraints and operating conditions. Annex A provides a purchaser’s format (checklist/template) for the required data.

Key topics and technical requirements

ISO 9374-4 focuses on practical specification data rather than design methods. Important technical topics include:

• Data to be provided by the purchaser

  • Required lifting capacities (main and auxiliary hoists), maximum load and corresponding radii, and maximum outreach.
  • Hook vertical travel: heights above and below rail level.
  • Number of cranes and installation location.
  • Rail information (rail centres, rail type) and required clearances.
  • Electrical supply details: voltage, phases, frequency, conductor arrangement, presence and earthing of neutral, power feeding system (reel or collector), cable length.
  • Materials and type of load, lifting gear or hook/device.
  • Climatic and ambient conditions (temperature range, wind, precipitation, pollution, saline atmosphere).
  • Special service conditions (explosive atmospheres, galvanizing/hot dip processes, termite protection, power variation >6 %, physical obstructions).
  • Required operating speeds (normal/slow) for hoist(s), trolley traverse, crane travel, slewing, and luffing; duty cycles (e.g., duration at maximum radius).

• Data to be provided by the manufacturer

  • Technical specifications, certificates and installation/testing information to facilitate site installation and commissioning.
  • Dimensional data and the cotes illustrated in the standard (clearance/oversail, heights, bogie spacing, distances R, J, K, E, etc.; see figures referenced in the standard).
  • Rated wheel and rail loads, limit switch arrangements and any special protective features.

Applications and users

ISO 9374-4 is intended for:

• Purchasing departments drafting enquiries and orders for jib cranes.
• Crane manufacturers preparing tenders and technical offers.
• Engineers and installers who need consistent, complete site and crane data for safe installation and commissioning.
• Asset owners and maintenance planners specifying operational limits, environment-related protections and electrical requirements.

Using ISO 9374-4 reduces ambiguity in specifications, helps match crane selection to service conditions, and supports safe, compliant installation.

Related standards

• ISO 7363 - Cranes and lifting appliances: technical characteristics and acceptance documents.
• ISO 4301-1 / ISO 4301-4 - Crane classification (general and jib-crane specific), referenced for duty classification and mechanism selection.

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