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Standard Roller Chain
ANSI G8


 

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ANSI G8

BS/DIN GT4 Winner

ANSI G8

g8-logo

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.

For more detailed information and to download CAD data about click here

Single Strand Details

ansi-g8-1
tsubaki-rs-single-strand
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).
  • 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-strand
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).
  • 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).
  • 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).
  • 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.