ISO 4002-2:1977

Overview

ISO 4002-2:1977 is an international standard published by the International Organization for Standardization (ISO) that specifies the precise dimensions of flat disks, type D2 with single bevel, used in sowing and planting agricultural equipment. This standard is essential for manufacturers and users of planting machinery and sowing equipment, ensuring compatibility, interchangeability, and consistent quality across agricultural machinery components.

The standard covers disks with either plain or ball/roller bearings and defines key dimensions, fixing hole configurations, and tolerances for outside diameters ranging from 300 mm to 350 mm. It provides detailed measurement data and diagrams for these disks, facilitating their application in various sowing and planting machines.

Key Topics

• Disk Types Covered: Flat disks type D2 with a single bevel, suitable for integration in sowing and planting machinery.
• Dimensions Specified:
  • Outside diameter (300 to 350 mm ranges)
  • Centre hole diameter
  • Rivet hole diameter
  • Pitch circle diameter
  • Disk thickness
• Bearing Compatibility: Designed for disks equipped with plain, ball, or roller bearings.
• Fixing Hole Accuracy: Fixing hole centers must be within 0.2 mm diameter of the true position, ensuring precise mounting.
• Flatness Tolerance: A flatness tolerance of +0 mm guarantees disk surface uniformity critical for optimal planting performance.
• Illustrations and Tables: The standard includes a detailed figure illustrating the disk sections and holes, alongside tables listing all relevant dimensions.

Applications

ISO 4002-2:1977 plays a critical role in the agricultural machinery sector, particularly for:

• Manufacturers of sowing and planting machines: To design and produce high-quality disks that meet international dimensional standards.
• Agricultural equipment maintenance and replacement parts: Ensures compatibility of disk replacements for various sowing and planting machines, resulting in minimal downtime.
• Agricultural machinery designers and engineers: Provides precise specifications needed for engineering disks that fit specific machine models.
• Quality control and standard compliance: Serves as a reference to verify disk dimensions and tolerances during production and procurement.
• International trade and interoperability: Facilitates global standardization of agricultural disks, encouraging smoother equipment sourcing and market exchange.

Related Standards

• ISO 3339-1-V: Classification and terminology for tractors and machinery used in agriculture and forestry, relevant to sowing and planting equipment.
• Other parts of the ISO 4002 series, which may include additional specifications for different types of disks or related planting equipment components.
• National standards aligning with ISO 4002-2:1977 may exist and complement this international guideline for localized application.

Summary

ISO 4002-2:1977 provides essential standardized dimensions and specifications for flat disks type D2 with single bevel, integral to the sowing and planting machinery industry. By following this standard, manufacturers and users benefit from consistent quality, reliable machine part interchangeability, and enhanced performance of agricultural equipment worldwide.

Keywords: ISO 4002-2, flat disks, sowing equipment, planting machinery, agricultural machinery standards, disk dimensions, agricultural disks, ISO agricultural standards, planting disks, single bevel disks.