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Standard Roller Chain
ANSI G8


 

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BS/DIN GT4 Winner

ANSI G8

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
ANSI G7 Standard Roller Chain
Dimensions in mm
Tsubaki Chain No. Pitch
p		 Roller Diameter
d1		 Inner Width
b1
RS25-1 6.35 1/4" 3.30 3.18
RS35-1 9.525 3/8" 5.08 4.78
RS37-1 12.70 1/2" 7.80 3.40
RS38-1 12.70 1/2" 7.80 4.80
RS41-1 12.70 1/2" 7.77 6.38
RS40-1 12.70 1/2" 7.92 7.95
RS50-1 15.875 5/8" 10.16 9.53
RS60-1 19.05 3/4" 11.91 12.70
RS80-1 25.40 1" 15.88 15.88
RS100-1 31.75 1 1/4" 19.05 19.05
RS120-1 38.10 1 1/2" 22.23 25.40
RS140-1 44.45 1 3/4" 25.40 25.40
RS160-1 50.80 2" 28.58 31.75
RS180-1 57.15 2 1/4" 35.71 35.72
RS200-1 63.50 2 1/2" 39.68 38.10
RS240-1 76.20 3" 47.63 47.63
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter
d2		 Length
L1		 Length
L2		 Length
L		 Thickness
T		 Height
H (max.)
RS25-1 2.31 3.80 4.50 - 0.74 5.84
RS35-1 3.59 5.85 6.85 13.50 1.25 9.00
RS37-1 3.63 5.10 5.90 12.45 1.00 9.80
RS38-1 3.63 6.00 7.10 14.10 1.10 9.80
RS41-1 3.59 6.75 7.95 15.10 1.25 9.80
RS40-1 3.97 8.25 9.95 17.90 1.50 12.00
RS50-1 5.09 10.30 11.90 22.50 2.00 15.00
RS60-1 5.96 12.85 14.75 28.20 2.40 18.10
RS80-1 7.94 16.25 19.25 36.60 3.20 24.10
RS100-1 9.54 19.75 22.85 43.70 4.00 30.10
RS120-1 11.11 24.90 28.90 55.00 4.80 36.20
RS140-1 12.71 26.90 31.70 59.50 5.60 42.20
RS160-1 14.29 31.85 36.85 70.20 6.40 48.20
RS180-1 17.46 35.65 42.45 80.60 7.15 54.20
RS200-1 19.85 39.00 44.80 87.30 8.00 60.30
RS240-1 23.81 47.90 55.50 106.70 9.50 72.40
Dimensions in mm
Tsubaki Chain No. Transverse Pitch
pt		 Min. Tensile Strength acc. to ISO 606
kN		 Min. Tensile Strength acc. to Tsubaki
kN		 Approx. Mass
kg/m
RS25-1 - 3.6 4.1 0.14
RS35-1 - 8.7 9.8 0.33
RS37-1 - - 8.1 0.29
RS38-1 - - 8.1 0.35
RS41-1 - 7.4 10.3 0.41
RS40-1 - 15.2 17.7 0.64
RS50-1 - 24.0 28.4 1.04
RS60-1 - 34.2 40.2 1.53
RS80-1 - 61.2 71.6 2.66
RS100-1 - 95.4 107.0 3.99
RS120-1 - 137.1 148.0 5.93
RS140-1 - 185.9 193.0 7.49
RS160-1 - 244.6 255.0 10.10
RS180-1 - 308.2 336.0 13.45
RS200-1 - 381.7 427.0 16.49
RS240-1 - 550.4 623.0 24.50
  • 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.
  • The listed sizes are stock items, other chain sizes are available on request .

Double Strand Details

ansi-g8-2
ANSI G7Standard Roller Chain
Dimensions in mm
Tsubaki Chain No. Pitch
p		 Roller Diameter
d1		 Inner Width
b1
RS25-2 6.35 1/4" 3.30 3.18
RS35-2 9.525 3/8" 5.08 4.78
RS40-2 12.70 1/2" 7.92 7.95
RS50-2 15.875 5/8" 10.16 9.53
RS60-2 19.05 3/4" 11.91 12.70
RS80-2 25.40 1" 15.88 15.88
RS100-2 31.75 1 1/4" 19.05 19.05
RS120-2 38.10 1 1/2" 22.23 25.40
RS140-2 44.45 1 3/4" 25.40 25.40
RS160-2 50.80 2" 28.58 31.75
RS180-2 57.15 2 1/4" 35.71 35.72
RS200-2 63.50 2 1/2" 39.68 38.10
RS240-2 76.20 3" 47.63 47.63
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter
d2		 Length
L1		 Length
L2		 Length
L		 Thickness
T		 Height
H (max.)
RS25-2 2.31 6.95 7.75 - 0.74 5.84
RS35-2 3.59 10.90 11.90 24.50 1.25 9.00
RS40-2 3.97 15.45 17.15 33.50 1.50 12.00
RS50-2 5.09 19.35 21.15 41.80 2.00 15.00
RS60-2 5.96 24.25 26.25 52.60 2.40 18.10
RS80-2 7.94 30.90 33.90 67.50 3.20 24.10
RS100-2 9.54 37.70 40.80 81.50 4.00 30.10
RS120-2 11.11 47.60 51.60 103.20 4.80 36.20
RS140-2 12.71 51.35 56.15 112.30 5.60 42.20
RS160-2 14.29 61.15 66.15 132.20 6.40 48.20
RS180-2 17.46 68.75 75.35 151.10 7.15 54.20
RS200-2 19.85 74.85 80.65 161.20 8.00 60.30
RS240-2 23.81 91.90 99.40 198.40 9.50 72.40
Dimensions in mm
Tsubaki Chain No. Transverse Pitch
pt		 Min. Tensile Strength acc. to ISO 606
kN		 Min. Tensile Strength acc. to Tsubaki
kN		 Approx. Mass
kg/m
RS25-2 6.40 7.2 8.2 0.27
RS35-2 10.10 17.4 19.6 0.69
RS40-2 14.40 30.4 35.3 1.27
RS50-2 18.10 48.0 56.9 2.07
RS60-2 22.80 68.4 80.4 3.04
RS80-2 29.30 122.4 143.0 5.27
RS100-2 35.80 190.8 214.0 7.85
RS120-2 45.40 274.2 296.0 11.70
RS140-2 48.90 371.8 386.0 14.83
RS160-2 58.50 489.2 510.0 20.04
RS180-2 65.80 616.4 673.0 26.52
RS200-2 71.60 763.4 853.0 32.63
RS240-2 87.80 1100.8 1250.0 48.10
  • 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.
  • The listed sizes are stock items, other chain sizes are available on request .

Triple Strand Details

ansi-g8-3
ANSI G7 Standard Roller Chain
Dimensions in mm
Tsubaki Chain No. Pitch
p		 Roller Diameter
d1		 Inner Width
b1
RS25-3 6.35 1/4" 3.30 3.18
RS35-3 9.525 3/8" 5.08 4.78
RS40-3 12.70 1/2" 7.92 7.95
RS50-3 15.875 5/8" 10.16 9.53
RS60-3 19.05 3/4" 11.91 12.70
RS80-3 25.40 1" 15.88 15.88
RS100-3 31.75 1 1/4" 19.05 19.05
RS120-3 38.10 1 1/2" 22.23 25.40
RS140-3 44.45 1 3/4" 25.40 25.40
RS160-3 50.80 2" 28.58 31.75
RS180-3 57.15 2 1/4" 35.71 35.72
RS200-3 63.50 2 1/2" 39.68 38.10
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter
d2		 Length
L1		 Length
L2		 Length
L		 Thickness
T		 Height
H (max.)
RS25-3 2.31 10.15 10.95 - 0.74 5.84
RS35-3 3.59 16.00 16.90 34.60 1.25 9.00
RS40-3 3.97 22.65 24.15 47.90 1.50 12.00
RS50-3 5.09 28.40 30.20 59.90 2.00 15.00
RS60-3 5.96 35.65 38.15 75.50 2.40 18.10
RS80-3 7.94 45.60 48.50 96.90 3.20 24.10
RS100-3 9.54 55.65 58.75 117.30 4.00 30.10
RS120-3 11.11 70.40 74.40 148.60 4.80 36.20
RS140-3 12.71 75.85 80.75 161.30 5.60 42.20
RS160-3 14.29 90.45 95.45 190.70 6.40 48.20
RS180-3 17.46 101.70 108.50 216.90 7.15 54.20
RS200-3 19.85 110.75 116.45 233.00 8.00 60.30
Dimensions in mm
Tsubaki Chain No. Transverse Pitch
pt		 Min. Tensile Strength acc. to ISO 606
kN		 Min. Tensile Strength acc. to Tsubaki
kN		 Approx. Mass
kg/m
RS25-3 6.40 10.8 12.4 0.42
RS35-3 10.10 26.1 29.4 1.05
RS40-3 14.40 45.6 53.0 1.90
RS50-3 18.10 72.0 85.3 3.09
RS60-3 22.80 102.6 121.0 4.54
RS80-3 29.30 183.6 215.0 7.89
RS100-3 35.80 286.2 321.0 11.77
RS120-3 45.40 411.3 444.0 17.53
RS140-3 48.90 557.7 580.0 22.20
RS160-3 58.50 733.8 765.0 30.02
RS180-3 65.80 924.6 1010.0 38.22
RS200-3 71.60 1145.1 1280.0 49.02
  • 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.
  • The listed sizes are stock items, other chain sizes are available on request .

Quadruple Strand Details

ansi-g8-4
ANSI G7 Standard Roller Chain
Dimensions in mm
Tsubaki Chain No. Pitch
p		 Roller Diameter
d1		 Inner Width
b1
RS35-4 9.525 3/8" 5.08 4.78
RS40-4 12.70 1/2" 7.92 7.95
RS50-4 15.875 5/8" 10.16 9.53
RS60-4 19.05 3/4" 11.91 12.70
RS80-4 25.40 1" 15.88 15.88
RS100-4 31.75 1 1/4" 19.05 19.05
RS120-4 38.10 1 1/2" 22.23 25.40
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter
d2		 Length
L1		 Length
L2		 Length
L		 Thickness
T		 Height
H (max.)
RS35-4 3.59 21.05 21.95 44.70 1.25 9.00
RS40-4 3.97 29.90 31.30 62.30 1.50 12.00
RS50-4 5.09 37.45 39.25 78.10 2.00 15.00
RS60-4 5.96 47.05 49.55 98.30 2.40 18.10
RS80-4 7.94 60.25 63.25 126.30 3.20 24.10
RS100-4 9.54 73.55 76.65 153.10 4.00 30.10
RS120-4 11.11 93.10 97.10 194.00 4.80 36.20
Dimensions in mm
Tsubaki Chain No. Transverse Pitch
pt		 Min. Tensile Strength acc. to ISO 606
kN		 Min. Tensile Strength acc. to Tsubaki
kN		 Approx. Mass
kg/m
RS35-4 10.10 - 39.2 1.41
RS40-4 14.40 - 70.6 2.53
RS50-4 18.10 - 114.0 4.11
RS60-4 22.80 - 161.0 6.04
RS80-4 29.30 - 286.0 10.50
RS100-4 35.80 - 428.0 15.70
RS120-4 45.40 - 592.0 23.36
  • 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.
  • The listed sizes are stock items, other chain sizes are available on request .