The shaft of a gearbox is coupled through a No. 80 chain drive, rotating a driveshaft for a pulp screen at a paper-producing plant. The screen driveshaft rotates at 200 rpm clockwise. The drive sprocket has 25 teeth and the sprocket on the mixer has 72. Determine the speed of the drive sprocket, the chain speed, and the recommended lubrication method.

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TABLE 10.6 Suitable Diametral Pitches for 20" Mild-Steel Gears with Standard Face Width Power
Pinion rpm hp 50 100 300 600 900 1200 1800 2400 3600 0.05 20 20 24 32 32 32 32 32 32 0.10 16
20 20 24 24 24 32 32 32 0.25 12 16 20 20 24 24 24 24 24 0.33 10 12 16 20 20 24 24 24 2...

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TABLE 10.7 Number of Teeth for commercially available stock gears 32 Diametral Pitch 12 16 20 28 36
48 64 80 112 14 18 24 32 40 56 72 96 128 24 Diametral Pitch 12 18 24 30 42 54 72 96 144 15 21 27 36
48 60 84 120 20 Diametral Pitch 12 16 24 35 50 80 100 160 14 18 25 40 60 84 120 180 15 ...