Standard Roller Chain
ANSI G8


 

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ANSI G8

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Tsubaki's 8th model upgrade, celebrating 100 years of quality. Pursuing the ultimate in quality, Tsubaki has created the world's highest standard of roller chain.

Single Strand Details

ansi-g8-1
tsubaki-rs-single-strand1.jpg
Dimensions-mm
Tsubaki Chain No.
Pitch (p)
Roller Diameter Inner Width
mm Inch R W
RS25-1 6.35 ¼" 3.30 3.18
RS35-1 9.525 ⅜" 5.08 4.78
RS37-1 12.70 ½" 7.80 3.40
RS38-1 12.70 ½" 7.80 4.80
RS41-1 12.70 ½" 7.77 6.38
RS40-1 12.70 ½" 7.92 7.95
RS50-1 15.875 ⅝" 10.16 9.53
RS60-1 19.05 ¾" 11.91 12.70
RS80-1 25.40 1" 15.88 15.88
RS100-1 31.75 1¼" 19.05 19.05
RS120-1 38.10 1½" 22.23 25.40
RS140-1 44.45 1¾" 25.40 25.40
RS160-1 50.80 2" 28.58 31.75
RS180-1 57.15 2¼" 35.71 35.72
RS200-1 63.50 2½" 39.68 38.10
RS240-1 76.20 3" 47.63 47.63
Dimensions in mm
Tsubaki Chain No.
Pin
Link Plate
Diameter
Length
Offset Pin
Length
Thickness Height
∅D L1 L2 L T h H
RS25-1 2.31 3.80 4.50 - 0.74 5.05 5.84
RS35-1 3.59 5.85 6.85 13.50 1.25 7.80 9.00
RS37-1 3.63 5.10 5.90 12.45 1.00 7.08 9.80
RS38-1 3.63 6.00 7.10 14.10 1.10 8.40 9.80
RS41-1 3.59 6.75 7.95 15.10 1.25 8.40 9.80
RS40-1 3.97 8.25 9.95 17.90 1.50 10.40 12.00
RS50-1 5.09 10.30 11.90 22.50 2.00 13.00 15.00
RS60-1 5.96 12.85 14.75 28.20 2.40 15.60 18.10
RS80-1 7.94 16.25 19.25 36.60 3.20 20.80 24.10
RS100-1 9.54 19.75 22.85 43.70 4.00 26.00 30.10
RS120-1 11.11 24.90 28.90 55.00 4.80 31.20 36.20
RS140-1 12.71 26.90 31.70 59.50 5.60 36.40 42.20
RS160-1 14.29 31.85 36.85 70.20 6.40 41.60 48.20
RS180-1 17.46 35.65 42.45 80.60 7.15 46.80 54.20
RS200-1 19.85 39.00 44.80 87.30 8.00 52.00 60.30
RS240-1 23.81 47.90 55.50 106.70 9.50 62.40 72.40
Dimensions in mm
Tsubaki Chain No. Transverse Pitch

C
ANSI Standard
Min. Tensile Strength
kN
TSUBAKI
Min. Tensile Strength
kN
Approx. Mass

Kg/m
Number of links
per unit
RS25-1 - 3.50 4.12 0.14 160
RS35-1 - 7.90 9.81 0.33 320
RS37-1 - - 8.14 0.29 240
RS38-1 - - 8.14 0.35 240
RS41-1 - 6.7 10.3 0.41 240
RS40-1 - 13.9 17.7 0.64 240
RS50-1 - 21.8 28.4 1.04 192
RS60-1 - 31.3 40.2 1.53 160
RS80-1 - 55.6 71.6 2.66 120
RS100-1 - 87.0 107.0 3.99 96
RS120-1 - 125.0 148.0 5.93 80
RS140-1 - 170.0 193.0 7.49 68
RS160-1 - 223.0 255.0 10.10 60
RS180-1 - 281.0 336.0 13.45 54
RS200-1 - 347.0 427.0 16.49 48
RS240-1 - 500.0 623.0 24.50 40
  • RS25 - RS35 are roller-less chain (only bush). The figure shown is the bush diameter.
  • Connecting links are clip type for sizes up to RS60, and cotter type for sizes RS80 to RS200.
    RS240 connecting links are spring pin type.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • Two pitch offset links (2POL) can be used at 100% of the above values.
  • Please contact us to get an updated stock information.

Double Strand Details

ansi-g8-2
tsubaki-rs-double-strand1.jpg
Dimensions-mm
Tsubaki Chain No.
Pitch (p)
Roller Diameter Inner Width
mm Inch R W
RS25-2 6.35 ¼" 3.30 3.18
RS35-2 9.525 ⅜" 5.08 4.78
RS40-2 12.70 ½" 7.92 7.95
RS50-2 15.875 ⅝" 10.16 9.53
RS60-2 19.05 ¾" 11.91 12.70
RS80-2 25.40 1" 15.88 15.88
RS100-2 31.75 1¼" 19.05 19.05
RS120-2 38.10 1½" 22.23 25.40
RS140-2 44.45 1½" 25.40 25.40
RS160-2 50.80 2" 28.58 31.75
RS180-2 57.15 2¼" 35.71 35.72
RS200-2 63.50 2½" 39.68 38.10
RS240-2 76.20 3" 47.63 47.63
Dimensions in mm
Tsubaki Chain No.
Pin
Link Plate
Diameter
Length
Offset Pin
Length
Thickness Height
∅D L1 L2 L T h H
RS25-2 2.31 7.00 7.70 - 0.75 5.05 5.84
RS35-2 3.59 10.90 11.90 24.50 1.25 7.80 9.00
RS40-2 3.97 15.45 17.15 33.50 1.50 10.40 12.00
RS50-2 5.09 19.35 21.15 41.80 2.00 13.00 15.00
RS60-2 5.96 24.25 26.25 52.60 2.40 15.60 18.10
RS80-2 7.94 30.90 33.90 67.50 3.20 20.80 24.10
RS100-2 9.54 37.70 40.80 81.50 4.00 26.00 30.10
RS120-2 11.11 47.60 51.60 103.20 4.80 31.20 36.20
RS140-2 12.71 51.35 56.15 112.30 5.60 36.40 42.20
RS160-2 14.29 61.15 66.15 132.20 6.40 41.60 48.20
RS180-2 17.46 68.75 75.35 151.10 7.15 46.80 54.20
RS200-2 19.85 74.85 80.65 161.20 8.00 52.00 60.30
RS240-2 23.81 91.90 99.40 198.40 9.50 62.40 72.40
Dimensions in mm
Tsubaki Chain No. Transverse Pitch

C
ANSI Standard
Min. Tensile Strength
kN
TSUBAKI
Min. Tensile StrengthkN
Approx. Mass

Kg/m
Number of links
per unit
RS25-2 6.40 7.00 8.24 0.27 160
RS35-2 10.10 15.80 19.60 0.69 320
RS40-2 14.40 27.80 35.30 1.27 240
RS50-2 18.10 43.60 56.90 2.07 192
RS60-2 22.80 62.60 80.40 3.04 160
RS80-2 29.30 111.2 143.0 5.27 120
RS100-2 35.80 172.0 214.0 7.85 96
RS120-2 45.40 250.0 296.0 11.70 80
RS140-2 48.90 340.0 386.0 14.83 68
RS160-2 58.50 446.0 510.0 20.04 60
RS180-2 65.80 562.0 673.0 26.52 54
RS200-2 71.60 694.0 853.0 32.63 48
RS240-2 87.80 1000.0 1250.0 48.10 40
  • RS25 - RS35 are rollerless chain (only bush). The figure shown is the bush diameter.
  • Connecting links are clip type for sizes up to RS60, and cotter type for sizes RS80 to RS200.
    RS240 connecting links are spring pin type.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • Two pitch offset links (2POL) can be used at 100% of the above values.
  • Please contact us to get an updated stock information.

Triple Strand Details

ansi-g8-3
tsubaki-rs-triple-strand
Dimensions-mm
Tsubaki Chain No.
Pitch (p)
Roller Diameter Inner Width
mm Inch R W
RS25-3 6.35 ¼" 3.30 3.18
RS35-3 9.525 ⅜" 5.08 4.78
RS40-3 12.70 ½" 7.92 7.95
RS50-3 15.875 ⅝" 10.16 9.53
RS60-3 19.05 ¾" 11.91 12.70
RS80-3 25.40 1" 15.88 15.88
RS100-3 31.75 1¼" 19.05 19.05
RS120-3 38.10 1½" 22.23 25.40
RS140-3 44.45 1¾" 25.40 25.40
RS160-3 50.80 2" 28.58 31.75
RS180-3 57.15 2¼" 35.71 35.72
RS200-3 63.50 2½" 39.68 38.10
Dimensions in mm
Tsubaki Chain No.
Pin
Link Plate
Diameter
Length
Offset Pin
Length
Thickness Height
∅D L1 L2 L T h H
RS25-3 2.31 10.15 10.95 - 0.75 5.05 5.84
RS35-3 3.59 16.00 16.90 34.60 1.25 7.80 9.00
RS40-3 3.97 22.65 24.15 47.90 1.50 10.40 12.00
RS50-3 5.09 28.40 30.20 59.90 2.00 13.00 15.00
RS60-3 5.96 35.65 38.15 75.50 2.40 15.60 18.10
RS80-3 7.94 45.60 48.50 96.90 3.20 20.80 24.10
RS100-3 9.54 55.65 58.75 117.30 4.00 26.00 30.10
RS120-3 11.11 70.40 74.40 148.60 4.80 31.20 36.20
RS140-3 12.71 75.85 80.75 161.30 5.60 36.40 42.20
RS160-3 14.29 90.45 95.45 190.70 6.40 41.60 48.20
RS180-3 17.46 101.70 108.50 216.90 7.15 46.80 54.20
RS200-3 19.85 110.75 116.45 233.00 8.00 52.00 60.30
Dimensions in mm
Tsubaki Chain No. Transverse Pitch

C
ANSI Standard
Min. Tensile Strength
kN
TSUBAKI
Min. Tensile Strength
kN
Approx. Mass

Kg/m
Number of links
per unit
RS25-3 6.40 10.50 12.40 0.42 160
RS35-3 10.10 23.70 29.40 1.05 320
RS40-3 14.40 41.70 53.00 1.90 240
RS50-3 18.10 65.40 85.30 3.09 192
RS60-3 22.80 93.90 121.0 4.54 160
RS80-3 29.30 166.8 215.0 7.89 120
RS100-3 35.80 261.0 321.0 11.77 96
RS120-3 45.40 375.0 444.0 17.53 80
RS140-3 48.90 510.0 580.0 22.20 68
RS160-3 58.50 669.0 765.0 30.02 60
RS180-3 65.80 843.0 1010.0 38.22 54
RS200-3 71.60 1041.0 1280.0 49.02 48
  • RS25 - RS35 are roller-less chain (only bush). The figure shown is the bush diameter.
  • Connecting links are clip type for sizes up to RS60, and cotter type for sizes RS80 to RS200.
    RS240 connecting links are spring pin type.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • Please contact us to get an updated stock information.

Quadruple Strand Details

ansi-g8-4

Dimensions-mm
Tsubaki Chain No.
Pitch (p)
Roller Diameter Inner Width
mm Inch R W
RS40-4 12.70 ½" 7.92 7.95
RS50-4 15.875 ⅝" 10.16 9.53
RS60-4 19.05 ¾" 11.91 12.70
RS80-4 25.40 1" 15.88 15.88
RS100-4 31.75 1¼" 19.05 19.05
RS120-4 38.10 1½" 22.23 25.40
Dimensions in mm
Tsubaki Chain No.
Pin
Link Plate
Diameter
Length
Offset Pin
Length
Thickness Height
∅D L1 L2 L T h H
RS40-4 3.97 29.90 31.30 62.30 1.50 10.40 12.00
RS50-4 5.09 37.45 39.25 78.10 2.00 13.00 15.00
RS60-4 5.96 47.05 49.55 98.30 2.40 15.60 18.10
RS80-4 7.94 60.25 63.25 126.30 3.20 20.80 24.10
RS100-4 9.54 73.55 76.65 153.10 4.00 26.00 30.10
RS120-4 11.11 93.10 97.10 194.00 4.80 31.20 36.20
Dimensions in mm
Tsubaki Chain No. Transverse Pitch

C
ANSI Standard
Min. Tensile Strength
kN
TSUBAKI
Min. Tensile Strength
kN
Approx. Mass

Kg/m
Number of links
per unit
RS40-4 14.40 - 70.6 2.53 240
RS50-4 18.10 - 114.0 4.11 192
RS60-4 22.80 - 161.0 6.04 160
RS80-4 29.30 - 286.0 10.50 120
RS100-4 35.80 - 428.0 15.70 96
RS120-4 45.40 - 592.0 23.36 80
  • RS25 - RS35 are rollerless chain (only bush). The figure shown is the bush diameter.
  • Connecting links are clip type for sizes up to RS60, and cotter type for sizes RS80 to RS200.
    RS240 connecting links are spring pin type.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • Please contact us to get an updated stock information.