Table 7-1: Lubrication Selection
Temperature is in °C (°F)
Lubricating System
A, B
C
-10°~0° 0°~40° 40°~50° 50°~60° -10°~0° 0°~40° 40°~50° 50°~60° (14°~32°) (32°~104°) (104°~122°) (122°~140°) (14°~32°) (32°~104°) (104°~122°) (122°~140°)
Temp.
Chain No.
RS50 or smaller RS60 and RS 80
SAE 10 SAE 20 SAE 30 SAE 40
SAE 10 SAE 20 SAE 30 SAE 40
SAE 20 SAE 30 SAE 40
SAE 50
RS100
SAE 20 SAE 30 SAE 40 SAE 50
RS120 or larger
SAE 30 SAE 40 SAE 50
Lubricating System and Quantity of Oil Applied The following lubricating systems are recommended. Refer to the U.S. Tsubaki General Catalog for system selection.
Method
Quantity of Oil
System A
Oil should be applied at a fixed interval, generally about every eight hours, or as often as necessary to prevent the bearing areas from becoming dry. Five to 50 drops of oil per minute are necessary for every strand of chain. Actual quantities depend on operating speed. The clearance “h” between the oil surface and the lowest position of the chain should be from 12 mm (.50 in.) to 25 mm (1.0 in.). to 12 mm (.50 in.). If “h” is too high, the composition of the oil may change due to the heat generated and reduce its effectiveness. Depth “h” from oil surface to chain should be 6 mm (.25 in.)
Manual Application Oil is applied with an oil filler or brush to the slack side of the chain. Drip Lubrication A simple case can be used. Oil from the oil cup is supplied by drip feeding.
Oil Bath Lubrication The chain is installed in a leak- free casing.
System B
h
Lubrication by Rotating Disc Oil can be splashed on the chain using a rotating disc installed in a leak-free casing. For this method, speed along the circumference of the disc should be more than 200 m/min. (656 ft./min.). If chain width is more than 124 mm (4.9 in.), use a rotating disc on both sides.
h
RS R OLLER C HAIN L UBRICATION 11
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