Kana Double Strand Roller Chains (Duplex) are industrial power-transmission chains manufactured by Katayama Chain (KANA), designed for applications requiring higher strength and load capacity than standard single-strand chains.

Description:
A duplex roller chain consists of two parallel rows (strands) of rollers and link plates connected side-by-side within the same chain assembly. This “double strand” configuration increases the chain’s ability to transmit power efficiently while maintaining a relatively compact pitch size.

Key Features:
• Double-strand construction
Two rows of rollers/bushings operate in parallel, sharing the load and improving durability.
• Higher tensile strength
Can handle significantly greater loads compared to simplex (single strand) chains.
• Improved shock resistance
Performs well under vibration, impact, and fluctuating loads.
• Smooth and stable power transmission
Multiple strands reduce vibration and distribute forces evenly across sprockets.
• Compact design for high power density
Achieves higher strength without needing a larger pitch chain size.

General Specifications:
Typical parameters include:
• Chain pitch (P)
• Roller diameter (R)
• Inner width (W)
• Pin diameter and length (D, L)
• Plate thickness and width
• Tensile strength and weight

Summary:
Kana duplex roller chains are high-strength, double-row transmission chains designed for heavy-duty and precision applications, offering better load capacity, durability, and reliability compared to single-strand chains.