Company Information

Hangzhou Ocean Industry Co., Ltd. specializes in manufacturing plate (leaf) chains. Contact details include telephone: 0086-571-88842852, fax: 0086-571-88844378, and email: [email protected] for technical support and inquiries.

Product Overview

The document provides comprehensive technical specifications for various leaf chain types conforming to international standards such as ISO, ANSI, DIN, and JIS. It covers chain dimensions, mechanical properties, and component details essential for engineering design and procurement.

Technical Specifications

• Pitch (P): Chain link spacing ranges from approximately 6.2 mm to 105 mm depending on the model.
• Plate Thickness (T or t): Varies between 0.60 mm and over 14 mm, with some chains offering selectable thickness options.
• Pin Diameter (d2): Specified per chain type, ranging from about 1.3 mm to over 36 mm.
• Plate Depth (h2): Typically between 4 mm and over 70 mm, influencing chain strength.
• Pin Length (L): Maximum lengths provided, generally correlating with chain size and application.
• Average Tensile Strength (Q0 or Qmin): Expressed in kN and lbf, ranging from under 1 kN to over 2600 kN for heavy-duty chains.
• Weight per Meter (q): Chain mass ranges from 0.23 kg/m to over 56 kg/m, important for load and handling calculations.

Chain Types and Standards

Chains are categorized by international standards:

• ISO/DIN: Standardized chain numbers and dimensions.
• ANSI: American National Standards Institute chain sizes.
• JIS: Japanese Industrial Standards specifications.

Special markings include * for straight link plates and △ for special plate combinations, allowing customization based on application needs.

Design and Selection Recommendations

• Selectable plate thickness options enable adaptation to operational requirements.
• Average tensile strength values guide appropriate chain selection for load capacities.
• Weight per meter data assists in calculating system weight and mechanical load.
• Pin diameter and length specifications ensure compatibility with sprockets and mechanical components.

Leaf Chain Types and Variants

The document details standard and hollow pin leaf chains, including parameters such as pitch, plate lacing configurations (e.g., 2x2, 4x4, 6x6), plate depth, thickness, pin diameter, pin length, tensile strength, and weight per meter. Hollow pin chains include additional pin length parameters (L3).

Clevis Types and Dimensions

• Two main clevis types: Outside Clevis (external connection ring) and Inside Clevis (internal connection ring).
• Dimension symbols (b7, b8, b9, b10, b11, b12, b13, b14, p1, d1, h4, r) define widths, pitches, diameters, heights, and radii in millimeters.
• Tables correlate clevis dimensions with chain numbers (LH and BL series), ensuring proper fit and assembly.
• Connecting links require press-fit outer plates for secure assembly.

Connecting Pins for LH and LL Series Leaf Chains

• Detailed specifications include maximum pin length (L max), maximum pin diameter (d2 max), minimum hole width (X min), and hole diameter (D).
• Data covers a wide range of ISO and ANSI chain numbers with pin diameters from approximately 6.35 mm to 36.5 mm.
• Variants with suffixes (DG), (DGF1), and (DGF2) indicate specialized or reinforced pin types.

Chain Length and Pitch Accuracy

Chain lengths for 100 pitches are provided with a tolerance of ±0.25%, ensuring manufacturing precision and reliable assembly.

Mechanical Properties and Performance

Average tensile strength is emphasized as a critical parameter for chain selection, with values provided in both metric (kN) and imperial (lbf) units to accommodate diverse engineering requirements.

Critical Information Summary

• Chain pitch and plate lacing define chain configuration and size.
• Plate depth and thickness influence strength and durability.
• Pin diameter and length are essential for mechanical integrity and compatibility.
• Average tensile strength guides load capacity selection.
• Weight per meter affects handling and application suitability.
• Clevis dimensions ensure proper chain connection and assembly.
• Special markings (*) and (△) denote straight plates and special link combinations respectively.
• Use connecting links with press-fit outer plates for secure assembly.
• Ensure pin dimensions match chain specifications for optimal performance.

Summary

This document serves as a comprehensive technical reference for engineers and procurement specialists involved in specifying, selecting, and assembling leaf chains and their components. It provides detailed dimensional, mechanical, and compatibility data for leaf chains, clevises, and connecting pins manufactured by Hangzhou Ocean Industry Co., Ltd., facilitating precise engineering design and reliable industrial application.