ISO 9374-7:1994 Standard Explained: Info Required for Jib Cranes
ISO 9374-7:1994 "Cranes — Information to be provided — Part 7: Jib cranes" defines the information requirements for jib cranes. Building on ISO 9374-4, this standard specifies the scope and requirements for technical information, installation details, operation and maintenance manuals, and spare parts information that manufacturers must supply to users, tailored to the specific structural and operational characteristics of jib cranes.
Nameplate and Identification Markings
ISO 9374-7:1999 requires the jib crane nameplate to include the manufacturer's name and address, model and serial number, year of manufacture, rated lifting capacity chart (capacity at each working radius), maximum load moment, working radius range (maximum and minimum radius), lifting height curve, and total dead weight including counterweight. The nameplate is made of stainless steel or aluminum alloy and is fixed in a prominent position on the portal base column or at the bottom of the tower mast. For knockdown jib cranes, major components must be individually identified — the mast marked with its component number and dead weight, the boom with its length and number, and each counterweight block with its weight.
An operating conditions plate is installed inside the operator cabin, showing the load-radius curve (rated lifting capacity chart for each boom length combination), lifting height curve, and mechanism working speeds (hoisting, luffing, slewing, and travel speeds). The standard also requires the wire rope drum to be marked with the rope specification — diameter, construction, and tensile strength — and the hydraulic cylinder to show its maximum working pressure. All nameplates and markings must have a minimum letter height of 5 mm and be bilingual in English and Chinese.
Technical Specification Data
The standard requires manufacturers to provide technical specifications covering jib-crane-specific parameters: portal clearance height and width, tail swing radius (which determines the minimum working space), track gauge and wheelbase (for rail-traveling units), maximum and minimum wheel load (as the design basis for foundations), and anchoring forces under non-working condition wind loads. Transport dimensions and weights of major components must be listed separately to facilitate logistics planning. Hoisting mechanism parameters include drum diameter and length, wire rope diameter and length, and pulley ratio.
Working speed parameters — lifting speed (listed separately for heavy load and no-load), derricking speed (luffing time for wire rope or hydraulic cylinder luffing), slewing speed (maximum rotational speed and acceleration time), and travel speed (rail or rubber-tire). All speed values are given for both rated load and no-load conditions. Technical parameters use SI units with values rounded to three significant figures. The Kelude jib crane Technical Specification covers all of the above parameters.
| Information Category | Content | Format | Application |
|---|---|---|---|
| Nameplate | Model Parameter/Curve | Stainless Steel Nameplate | Equipment Identification |
| technical specifications | Dimensions/Weight/speed | Hard Copy+Electronic | selection/Foundationdesign |
| Load Curve | Each Working radius Lifting Capacity | Lamination | Cab operation |
| installation drawings | Foundation/Crane Rail/Assembly | Blueprint+Electronic | Field Installation |
| Operation Manual | Operation/Safety/Emergency | A4Binding | Routine Operation |
| Maintenance Manual | Maintenance/Lubrication/Spare parts | A4Binding | Inspection & Maintenancemaintenance |
Installation & Foundation Requirements
The standard requires manufacturers to supply comprehensive installation documentation, including foundation drawings (Portal crane rail foundation layout, embedded part positions and load parameters, mast crane anchoring methods and ground anchor loads), installation steps (hoisting sequence for each component, bolt pretightening torque and assembly clearance requirements), commissioning procedures (no-load and load testing steps for each mechanism), and acceptance standards (post-installation test items and evaluation criteria). For traveling jib cranes, the documentation must cover crane rail installation specifications—rail type, track gauge tolerance ±3mm, joint requirements, and grounding requirements.
Mast crane installation documentation also includes mast base anchoring methods, cable system layout and tension requirements, anchor point positions for each guy wire, and ground anchor loads. Floating cranes require stability parameters for the pontoon and mooring system layout. All installation drawings must be marked with version numbers and design approval signatures. Kelude Heavy Industry delivers jib cranes with complete installation drawings and technical documentation.
Spare Parts & Service Support
The standard requires manufacturers to provide a spare parts list covering at least 10 years of equipment operation. Critical spare parts (wire rope, filter elements, friction linings, seals, sensors, etc.) must be identified with original part numbers and ordering channels, with a critical spare parts inventory stock rate of ≥80% and 24-hour dispatch for emergency orders. Manufacturers must also provide information on their national or regional service network. Kelude Heavy Industry supplies a complete information package and service support with every jib crane at the time of factory delivery.
| Spare parts Type | Replacement Interval | stock rate | Supply Time |
|---|---|---|---|
| Wire Rope | 2~3Year | 100% | 24h |
| Hydraulicfilter element | 500h | 100% | 24h |
| Friction lining | 1000h | ≥80% | 48h |
| Seal | 2000h | ≥80% | 48h |
| Sensor | On Demand | ≥80% | 48h |
FAQ
Q: What are the nameplate requirements under ISO 9374-7:1994?
A: The nameplate shall be made of stainless steel or aluminum alloy and include the manufacturer, model, serial number, load capacity chart, torque, working radius, and height curve. It must be fixed in a prominent position on the portal base column or at the bottom of the tower mast. Detachable components are to be individually identified with their own serial numbers and dead weight. An operating conditions plate is also provided inside the operator cabin.
Q: What parameters are included in the technical specifications?
A: The specifications cover the clear height and width of the gantry, tail swing radius, track gauge and wheelbase, maximum/minimum wheel load, and anchoring forces under non-working conditions. Hoisting mechanism parameters include drum and wire rope specifications. Speed parameters for each mechanism are provided for both heavy-load and no-load operating conditions.
Q: What should the installation information include?
A: The installation package includes foundation drawings, installation steps, commissioning procedure, and acceptance standards. For mast cranes, it also covers cable arrangement and ground anchor loads; for floating cranes, it includes pontoon stability and mooring arrangements. All drawings must be marked with version numbers and design approval signatures.
Q: What is the spare parts supply commitment?
A: We guarantee spare parts availability for 10 years of operation, maintain a critical spare parts inventory stock rate of ≥80%, and dispatch emergency orders within 24 hours. Kelude provides nationwide service network support and spare parts supply.
