Double Pitch Transmission Chains

Double Pitch Transmission Chains

1. Core Definition & Basic Structure

• Core Structure: Composed of outer link plates (outer link plates + pins), inner link plates (inner link plates + bushings), and rollers. Adjacent inner/outer link plates are articulated through the cooperation of pins and bushings, and rollers can rotate freely around bushings to reduce friction with sprockets.

• Specification Labeling: Usually marked with "chain number + pitch characteristic". For example, in the ISO standard, the pitch of 08B standard chain is 12.7mm, and the corresponding double pitch chain is 08B-2 (pitch 25.4mm); in the ANSI standard, the pitch of 40 standard chain is 12.7mm, and the double pitch chain is 40H (pitch 25.4mm).

2. Core Characteristics (vs. Standard Roller Chains)

3. Typical Application Scenarios

• Conveying machinery: Automated production line conveyors, packaging machinery conveyors, food processing line conveyors;

• Light industrial equipment: Printing machinery, textile machinery auxiliary transmission systems;

• Agricultural machinery: Grain conveyors, feed processing equipment transmission parts;

• General mechanical equipment: Low-speed lifting mechanisms, small-scale material handling equipment.

4. Key Performance Parameters

• Pitch accuracy: ±0.05mm (based on ISO 606 standard);

• Tensile strength: 80% of the same-series standard roller chain (meets light/medium load requirements);

• Working temperature range: -20℃ to +120℃ (special anti-corrosion models can reach +180℃);

• Wear resistance: Surface treatment (e.g., zinc plating, nickel plating) can extend service life by 30-50%.