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Chain Product » Drive chain » RO Type Heavy Duty Roller Chain
RO Type Heavy Duty Roller Chain Tsubaki RO Type Heavy Duty Roller Chain
RO Heavy Duty Roller Chains are designed for use in oil rigs, power shovels and hoists, road-building equipment, and other heavy-duty construction machinery. The use of specially selected alloy steel and heat-treated parts insures a long trouble-free life under severe operating conditions.
RO Roller Chain
Dimensions-mm
Chain No. Pitch
P
Roller Dia.
R
Inner Width
W
RO3140T 44.45 25.40 25.4
RO31613AK 50.80 28.58 32.1
RO3180 57.15 35.70 36.7
RO25H 63.50 31.75 38.1
RO568 77.90 41.28 39.7
BO2512 77.90 31.75 39.7
RO3 78.11 31.75 38.1
RO3H 78.11 31.75 38.1
RO3125 79.38 41.28 39.7
RO1616 88.90 44.45 38.1
RO1338 92.08 53.98 42.4
RO1644A 95.25 44.45 38.1
RO1664A 101.60 57.15 55.9
RO4 103.20 44.45 49.2
RO4HF 103.20 44.45 49.2
RO1245 103.45 45.09 49.2
RO1343 103.89 47.70 49.2
RO1345 103.89 50.80 49.2
RO635 114.30 57.15 52.4
RO1602AA 127.00 63.5 69.9
RO1605AK 127.00 63.5 69.9
Dimensions-mm
Chain No. Link Plate Pin
Thickness
T
Height
H
Dia.
D
L1 + L2 From Pin Head to C.L.
L1
From Pin end to C.L.
L2
RO3140T 6.3 43.2 13.97 65.9 30.1 35.8
RO31613AK 7.9 41.3 15.04 79.4 36.5 42.9
RO3180 7.1 54.0 17.45 79.2 37.6 41.6
RO25H 9.5 41.3 15.88 92.1 42.5 49.6
RO568 9.5 57.2 19.05 97.7 43.7 54.0
BO2512 9.5 57.2 19.05 97.7 43.7 54.0
RO3 7.9 38.1 15.88 86.6 39.7 46.9
RO3H 9.5 44.5 16.46 92.5 42.7 49.8
RO3125 9.5 57.2 22.23 98.4 44.4 54.0
RO1616 12.7 57.2 22.23 110.3 50.0 60.3
RO1338 14.3 60.3 23.88 123.3 56.9 66.4
RO1644A 14.3 60.3 23.88 119.0 54.7 64.3
RO1664A 14.3 85.7 30.16 138.3 63.6 74.7
RO4 12.7 57.2 22.23 120.7 55.6 65.1
RO4HF 15.9 60.3 23.88 136.5 63.5 73.0
RO1245 14.3 60.3 23.88 130.2 60.3 69.9
RO1343 14.3 69.9 27.91 131.7 60.3 71.4
RO1345 14.3 69.9 27.91 131.7 60.3 71.4
RO635 14.3 76.2 27.91 134.9 61.9 73.0
RO1602AA 15.9 88.9 31.65 158.7 73.8 84.9
RO1605AK 19.1 88.9 34.93 171.5 80.2 91.3
Dimensions-mm
Chain No. Minimum Tensile Strength
kN {kgf}
Approx. Mass
kg/m
Number of Links per unit
RO3140T 217 {22,100} 7.7 68
RO31613AK 280 {28,600} 11.3 57
RO3180 324 {33,000} 15.5 65
RO25H 338 {34,500} 13.7 66
RO568 447 {45,600} 17.9 65
BO2512 447 {45,600} 17.2 67
RO3 236 {24,100} 10.5 65
RO3H 338 {34,500} 14.3 65
RO3125 459 {46,800} 18.8 69
RO1616 559b {57,000} 23.9 50
RO1338 722 {73,600} 30.0 50
RO1644A 722 {73,600} 29.3 50
RO1664A 1110 {113,000} 44.5 50
RO4 559 {57,000} 23.9 50
RO4HF 731 {74,500} 23.2 50
RO1245 722 {73,600} 27.2 51
RO1343 902 {92,000} 31.9 50
RO1345 902 {92,000} 32.9 50
RO635 964 {98,300} 38.3 53
RO1602AA 1330 {136,000} 52.3 51
RO1605AK 1560 {159,000} 54.3 50

Chain with induction hardened pin for wear resistance is also available

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