U.S. TSUBAKI STANDARD ATTACHMENT CHAIN
Curved Attachment Chain
CURVED CHAIN U.S. Tsubaki Curved chain has additional clearance between the pins and bushings and between the roller links and pin link plates to permit extra flexibility and greater lateral displacement. The basic dimensions of this chain are the same as those of ASME/ANSI standard roller chain. •Available in Carbon Steel or Stainless Steel. NOTE: U.S. Tsubaki’s unique design of the curved chain does not taper the pin diameter, which allows the pin diameter to be uniform throughout.
U.S. TSUBAKI
Pitch
Roller
Width
Min.
Diameter
Between Roller Link
Pin
Link Plate
Radius
of
Plates
Side Bow
inches
P
R
W D
L 1
L 2
L 1 + L 2
T
H
h
r
Chain No.
RS35CU
.375 .500 .625 .750
.200 .312 .400 .469 .625
.188 .312 .375 .500 .625
.125 .156 .200 .234 .312
.238 .333 .417 .522 .659
.301 .384 .488 .593 .789
.539 .717 .905
.050 .060 .080 .094 .125
.354 .472 .591 .713 .949
.307 .409 .512 .614 .819
10 14 16 20 24
RS40CU RS50CU RS60CU RS80CU
1.115 1.448
1.000
Rollerless (bushing only)
NOTE:
Average Maximum Approx.
Additional Weight per Attachment
U.S. TSUBAKI
Tensile Strength
Allowable
Weight
Attachment
Load
lbs./att.
lbs.
lbs.
lbs./ft.
C
N
O
S
X
.0017 .0044 .0066 .0154 .0287 A Att.
.0034 .0088 .0132 .0308 .0574 K Att.
Chain No.
RS35CU
1,800 3,480 5,420 7,830
210 420 640 900
.22 .41 .68 .94
.375 .500 .626 .750
.311 .374 .500 .625 .752
.102 .141 .205 .205 .268
.250 .315 .406 .469 .626
.571 .709 .933
RS40CU RS50CU RS60CU RS80CU
1.122 1.461
13,840
1,560
1.66
1.000
NOTE: Rollerless (bushing only)
B-7
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