Applications
2.1.2 Double Pitch Roller Chain Light conveyance: General uses
Application Example This is the most commonly used conveyor chain and is utilized widely in the auto parts, electric, electronic, and precision machinery industries (Figure 2.4).
Figure 2.4 Double Pitch Roller Chain
Construction and Features Double Pitch Roller Chain has the same basic construction as Standard Roller Chain, but double pitch means the chain pitch is twice as long, has flat-shaped link plates, and longer attachments. This series is regulated by ANSI B29.4, ISO 1275-A, and JIS B 1803. Table 2.2 shows the size, pitch, and maximum allowable tension for standard specification Double Pitch Roller Chain. Among these, four sizes—Numbers 2040, 2050, 2060, and 2080—are most commonly used. The features are shown below: (1) Double Pitch Roller Chains have the smallest tolerances for overall length compared to all other types of conveyor chains. Without attachments: 0 to +0.15 percent of the nominal chain length. With attachments: 0 to +0.25 percent of the nominal chain length.
Table 2.2 Dimensions of Double Pitch Roller Chain 1
Maximum Allowable Load (kN)
Pitch (mm) 25.40 31.75 38.10 50.80 63.50 76.20 101.60
Chain No.
2040 2050 2060 2080 2100 2120 2160
2.65 4.31 6.27
10.6 17.1 23.9 40.9
1 These dimensions are from Tsubaki. Other manufacturers’products may vary.
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