Double Pitch Hollow Pin Chain Selection

Double Pitch Hollow Pin Chain Selection

Double-pitch hollow pin chains can be attractive where carriers are spaced farther apart and the conveyor does not need a joint at every short-pitch interval. The longer pitch changes articulation frequency and drive geometry, so the decision should be made from the conveyor layout rather than from chain cost alone.

Match Carrier Pitch

Map the product or fixture spacing first. If the machine naturally uses a longer carrier interval, a double-pitch architecture can reduce the number of joints and simplify the attachment pattern.

Review Motion Smoothness

Longer pitch can increase polygonal action at the same sprocket tooth count. For applications sensitive to speed variation or indexing quality, evaluate sprocket tooth count and diameter together with the longer chain pitch.

Check Conveyor Speed

Provide actual chain speed and cycle profile. A low-speed product carrier may tolerate a different geometry from a high-speed transfer system with frequent starts and stops.

Size The Rod System

A longer pitch does not automatically mean a wider cross-rod span, but many double-pitch conveyors use larger carrier spacing. Check rod bending, carrier weight and dynamic loads independently.

Confirm Replacement Fit

Do not assume a short-pitch and double-pitch chain can share every sprocket or guide. Document the installed sprockets and frame clearances before approving a retrofit.

Selection Inputs

• Required carrier spacing
• Chain speed and indexing cycle
• Sprocket tooth count and diameter limits
• Cross-rod or fixture drawing
• Conveyor centre distance
• Load distribution across paired strands
• Existing guide and frame clearances