MAXIMUM ALLOWABLE LOAD The chain’s maximum allowable load can be obtained by the formula: (Maximum allowable bearing pressure) • (Bearing area between pin and bushing).
AS Series
SS Series
NS Series
26 lbs. 60 lbs. 99 lbs. 154 lbs. 231 lbs. 397 lbs. 573 lbs.
RS25
— 90 lbs. 150 lbs. 231 lbs. 346 lbs. 596 lbs. —
26 lbs. 60 lbs. 99 lbs. 154 lbs. 231 lbs. 397 lbs. 573 lbs.
RS35 RS40 RS50 RS60 RS80 RS100
SERVICE FACTOR
Type of Impact
Service Factor
Smooth transmission Transmission with some impact Transmission with large impact
1.0 1.3 1.5
SPEED COEFFICIENT
Chain Speed
Speed Coefficient
0 ~ 50 ft./min. 50 ~ 100 ft./min. 100 ~ 160 ft./min. 160 ~ 230 ft./min.
1.0 1.2 1.4 1.6
TEMPERATURE FACTOR*
Temperature
AS Series
SS Series
NS Series
X X
X
X
~ -270°F -270°F ~ -40°F -40°F ~ 750°F 750°F ~ 930°F * 930°F ~ 1,100°F * 1,100°F ~ 1,300°F * 1,300°F ~ 1,500°F * 1,500°F ~ *
1.0
1.0
1.0
1.0
1.0
1.8 X X X
1.2
1.0
1.5
1.2
1.8
1.5
X
2.0
X
X
X
X : Not suggested. * Use in temperatures exceeding 750°F requires increased clearances to accommodate thermal expansion. Consult U.S. Tsubaki prior to ordering.
A-62
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