Overview
ISO 5613:1984 - "Mining - Drive sprocket assemblies for chain conveyors" specifies requirements for drive sprocket assemblies used in twin outboard chain conveyors in mining. The standard defines compatible sprocket rings designed to accept chains complying with ISO 610, shackle‑type connectors per ISO 1082, and scraper bars per ISO 5612. It provides tabulated dimensions, figures showing tooth and pocket shapes, and an annex containing the design formulae used to derive key dimensions.
Key topics and technical requirements
- Scope and compatibility
- Applies to sprocket assemblies for twin outboard chain assemblies; compatibility with ISO 610 chains and ISO 1082 connectors is required.
- Dimensions and tolerances
- Dimension tables and figures define pitch circle, groove diameters, pocket centres and tooth profiles for common nominal chain sizes (e.g., 14×50, 18×64, 22×86, 24×86/87.5, 26×92).
- Groove width, root radius, pocket length and other critical dimensions are specified or derived from the annex formulae.
- Design formulae
- Annex A contains formulae for pitch circle diameter, groove diameter, barrel diameter, pocket centres, tooth flank and root radii, and other geometric parameters used to calculate sprocket geometry.
- Construction and materials
- Acceptable construction methods: cast in one piece, machined from solid, or assembled from forged/cast inner and outer half rings.
- Selection of materials, heat treatment and welding procedures are to be agreed between manufacturer and purchaser.
- Workmanship and testing
- Welds must be smoothly finished and free of harmful defects; magnetic/fluorescent or radiographic NDT may be specified by agreement.
- Dimensional verification methods are to be agreed; an associated guidance document on verification methods is referenced.
- Alignment and marking
- Radial alignment tolerance between ring profiles: within 1 mm measured at the chain centreline.
- Mandatory marking includes manufacturer’s name/trademark, chain size and pitch, and chain centres; additional markings by agreement.
Applications and users
ISO 5613:1984 is used where reliable drive sprocket assemblies are required in mining chain conveyors, including:
- Mining equipment manufacturers designing and producing drive sprocket assemblies.
- Conveyor system designers and OEMs specifying sprockets for chain conveyors, coal ploughs and scraper conveyors.
- Procurement and inspection teams verifying supplier conformity to dimensional, marking and testing requirements.
- Maintenance and reliability engineers who need correct replacement sprockets and to ensure proper fit with chains, shackles and scraper bars.
Related standards
- ISO 610 - High‑tensile steel chains (round link) for chain conveyors and coal ploughs
- ISO 1082 - Mining - Shackle type connector units for chain conveyors
- ISO 5612 - Mining - Scraper bars for chain conveyors
Keywords: ISO 5613:1984, drive sprocket assemblies, chain conveyors, mining sprockets, sprocket dimensions, design formulae, ISO 610, ISO 1082, ISO 5612, sprocket inspection, conveyor design.
