Snapidle -

Snapidle Sizes ANSI Standard Roller Chain Sizes
SI-25 25
SI-35 35
SI-40 25-2, 41, 40, 52
SI-50 35-2, 50
SI-60 40-2, 35-3, 60
SI-80 50-2, 35-4, 80
SI-100 60-2, 40-3, 76, 100
SI-120 80-2, 50-3, 40-4, 120
SI-140 140
SI-160 50-4, 40-5, 160
SI-180 60-3, 180, 
SI-200 100-2,  80-3, 60-4, 50-5, 40-6, 200
SI-240 120-2, 140-2, 100-3, 80-4, 60-5, 50-6, 240
*When ordering #300, 400, 500, 600 series please refer to footnotes provided.
SI-300* 180-2, 200-2, 240-2, 120-3, 140-3, 160-2, 100-4, 120-4, 140-4, 80-5, 100-5, 60-6, 80-6, 60-8
SI-400* 200-3, 240-3, 200-4, 120-5, 140-5, 100-6, 120-6, 140-6, 80-8, 100-8, 180-3, 180-4
SI-500* 240-4, 160-3 120-8, 140-8, 180-5
SI-600* 180-6, 200-6, 240-5 160-4
Note 1 These units must be ordered as follows,  the Snapidle # and ANSI chain that it is to fit (i.e. # 300 Snapidle to fit 240-2 R.C.)
Note 2 Allow four weeks for delivery
Note 3 See cross reference chart for non-referenced chains
Note 4  Side strap lengths all 48".
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Snapidle Sizes ANSI H-Series Sizes
SI-60 60-H
SI-80 80-H
SI-100 100-H
SI-120 120-H, 60-2H
SI-140 140-H
SI-160 160-H, 80-2H
SI-180 180-H, 100-2H
SI-200 200-H
SI-240 240-H, 120-2H, 140-2H, 80-3H, 100-3H
 *When ordering #300, 400, 500, 600 series please refer to footnotes provided.
SI-300* 160-2H, 200-2H, 120-3H, 140-3H, 160-3H, 80-4H, 100-4H, 120-4H, 60-5H, 80-5H, 100-5H, 60-6H, 80-6H
SI-400* 200-3H, 140-4H, 160-4H, 120-5H, 140-5H, 100-6H, 120-6H
SI-500* 200-3H, 200-4H, 160-5H, 140-6H, 160-6H
SI-600* (See Note 4)
Note 1 These units must be ordered as follows,  the Snapidle # and ANSI chain that it is to fit  (i. e. # 300 Snapidle to fit 160-2H.)
Note 2 Allow four weeks for delivery
Note 3 See cross reference chart for non-referenced chains
Note 4 Side strap lengths all 48".

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Snapidle Sizes ANSI Mill, Convey and Engineering Class Chains
SI-40 C-2040, C-2050
SI-60 C-2060
SI-80 C-2080,3100, CA-550
SI-100 C-2100, 81-X, CA-620
SI-120 C-2120, 3120, 3140, H-62
SI-140* *See non-referenced chains
SI-160 C-2160, 3160, H-60, H-75, H-75
SI-180 3180, H-78
SI-200 H-82, 200-H, 2010, 720
SI-240 3125, 3924, H-124, 2814, 2512, 720S, 730
*When ordering #300, 400, 500 and 600 series please refer to footnotes provided.
SI-300* 3618, 4020, 3315, 4824, H-155, H-320, 710
SI-400* (See note # 4)
SI-500* (See note # 4)
SI-600* (See note # 4)
Note 1 These units must be ordered as follows,  the Snapidle # and ANSI chain that it is to fit (i.e. #300 Snapidle to fit H-155
Note 2 Allow four weeks for delivery
Note 3 See cross reference chart for non-referenced chains
Note 4 Side strap lengths all 48".

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Snapidle Sizes British Standard Roller Chain
SI-35 06B
SI-40 08B
SI-50 10B, 06B-2
SI-60 12B, 08B-2
SI-80 16B, 20B, 10B-2
SI-100 12B-2, 08B-3
SI-120 24B, 10B-3
SI-160 28B, 32B, 16B-2, 12B-3
SI-180 40B, 20B-2
SI-200 *See cross reference chart for non-referenced chains.
SI-240 24B-2, 28B-2, 32B-2, 16B-3, 20B-3
*When ordering #300, 400, 500, 600 series, please refer to footnotes provided.
SI-300* 40B-2, 24B-3, 28B-3, 32B-3
SI-400* (See note # 4)
SI-500* (See note # 4)
SI-600* (See note # 4)
Note 1 These units must be ordered as follows,  the Snapidle # and ANSI chain that it is to fit (i.e. #300 Snapidle to fit 32B-3RC)
  Allow four weeks for delivery
  See cross reference chart for non-referenced chains
  Side strap lengths all 48".
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Non-Referenced Chains

Cross Reference Chart

To select the proper Snapidle, take the actual width of the chain (outside of pin to outside of pin) and match that width to a Snapidle that has a greater cut of chain path. Then add the factor dimension to the actual dimension of the chain. If this figure is less than the Snapidle actual cut, then order that Snapidle unit. If this figure is greater, you want the next larger size of Snapidle unit.
Cut of chain path Factor
Snapidle Size inches millimeters inches millimeters
SI-25 0.500 12.70 0.062 1.58
SI-35 0.625 15.87 0.062 1.58
SI-40 0.938 23.81 0.062 1.58
SI-50 1.125 28.57 0.062 1.58
SI-60 1.375 34.92 0.125 3.71
SI-80 1.750 44.45 0.125 3.17
SI-100 2.062 52.38 0.125 3.17
SI-120 2.688 68.26 0.125 3.17
SI-140 2.688 68.26 0.125 3.17
SI-160 3.125 79.37 0.188 4.76
SI-180 3.438 87.31 0.188 4.76
SI-200 4.05 105.41 0.188 4.76
SI-240 5.250 133.35 0.188 4.76
SI-300* 5.25 to 8.00 133.35 to 203.2 0.188 4.76
SI-400* 8.00 to 12.00 203.20 to 304.8 0.188 4.76
SI-500* 12.00 to 16.00 304.80 to 406.4 0.188 4.76
SI-600* 16.00 to 20.00 406.40 to 508.0 0.188 4.76
*Footnotes: Snapidle #300, 400, 500, 600 are assembled to width of the chain ordered. Chain width and/or manufacturer's name and chain designation must be specified.   Delivery time may take up to four weeks (only 400, 500 or 600 sizes). Side strap lengths are 48 inches. Side strap lengths for British Roller Chain are 32 centimeters.

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Decimal And Metric Equivalents

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