Series 831 Series 831 Straight Running Chain in. 1.50 3.25 4.50
Pitch, P Width, W Open Area Hinge Style Drive Method
mm 38.1 82.5 114.3
0% Closed Hinge-driven
P
0.189" (4.8 mm)
Series 831 Straight Running Chain Data Chain Temperature Range Chain Chain Widths CS W Strength* (continuous) Weight Material Color in. 3.25 4.50 3.25 4.50 7.50
mm 82.5 114.3 82.5 114.3 190.5
Ultra Performance Ultra Performance LF Acetal LF Acetal LF Acetal
Grey Grey Brown Brown Brown
lb 365 365 365 365 365
kg 166 166 166 166 166
°F -40 to 248 -40 to 248 -40 to 176 -40 to 176 -40 to 176
°C -40 to 120 -40 to 120 -40 to 80 -40 to 80 -40 to 80
lb/ft 0.61 0.62 0.59 0.72 1.08
kg/m 0.90 0.92 0.88 1.07 1.61
831
Section 3
W
*Working load.
Series 831 Sprocket Data Available Bore Sizes Nom. Nom. Nom. Pitch Outer Hub U.S. Sizes Metric Sizes Number of Diameter Diameter Width Teeth Round Round in. mm in. mm in. mm in. mm mm mm 25 6.0 152 6.1 154 2.3 59 1.25 30 35 40
Drive Sprocket
Idler Sprocket
• D rive sprockets vs. Idler sprockets: generally, it is preferred to have a rotating idle shaft, so keyed “drive” sprockets would also be used to rotate the idle shaft in its bearings. If using a fixed idle shaft, use the “idler” sprockets, which have a looser bore and no keyway. A fixed idle shaft is suitable for speeds less than 100 fpm (30 mpm). • If more than one chain is using the same idle shaft, only the sprocket for one chain should be locked in position. Generally use a keyed drive sprocket on the center most chain, to allow it to turn the shaft. The remaining sprockets will be the idler sprockets, locked using shaft collars to prevent side to side movement.
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