Machinery's Handbook, 31st Edition
2620 Transmission Roller Chains Attachments.— Modifications to standard chain components to adapt the chain for use in conveying, elevating, and timing operations are known as “attachments.” The compo - nents commonly modified are: 1) the link plates, which are provided with extended lugs which may be straight or bent ; and 2) the chain pins, which are extended in length so as to project substantially beyond the outer surface of the pin link plates. Hole diameters, thicknesses, hole locations and offset dimensions for straight link and bent link plate extensions and lengths and diameters of extended pins are given in Table 3. Table 3. Straight and Bent Link Plate Extensions and Extended Pin Dimensions ANSI/ASME B29.1-2011 (R2016)
C
B
F
F
B
D
D
Straight Link Plate Extension, One Side of Chain
Bent Link Plate Extension, One Side of Chain B F
C
B
F
D
D
Straight Link Plate Extension, Both Sides of Chain
Bent Link Plate Extension, Both Sides of Chain
L
D p
Extended Pin, One Side of Chain
Chain No.
Straight Link Plate Extension
Bent Link Plate Extension
Extended Pin
D p Nomi nal
B min. L 35 0.102 0.375 0.050 0.102 0.250 0.375 0.050 0.141 0.375 40 0.131 0.500 0.060 0.131 0.312 0.500 0.060 0.156 0.375 50 0.200 0.625 0.080 0.200 0.406 0.625 0.080 0.200 0.469 60 0.200 0.719 0.094 0.200 0.469 0.750 0.094 0.234 0.562 80 0.261 0.969 0.125 0.261 0.625 1.000 0.125 0.312 0.750 100 0.323 1.250 0.156 0.323 0.781 1.250 0.156 0.375 0.938 120 0.386 1.438 0.188 0.386 0.906 1.500 0.188 0.437 1.125 140 0.448 1.750 0.219 0.448 1.125 1.750 0.219 0.500 1.312 160 0.516 2.000 0.250 0.516 1.250 2.000 0.250 0.562 1.500 200 0.641 2.500 0.312 0.641 1.688 2.500 0.312 0.781 1.875 All dimensions are in inches. D F B min. C D F
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