RS roller chain BS/DIN standard 　Major Specifications

RS20B-2


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Catalogs ・Instruction Manuals

Major Specifications

Size &
No. of
strands 		JIS no. No. of
strands 		Min. tensile strength
kN {kgf}		 ISO606 tensile strength
kN {kgf}		 Max. allowable load
kN {kgf}		 Estimated Mass
kg/m		 No. of links
per unit
RS20B-2 20B 2 197{20100} 170{17300} 31.3{3190} 7.65 96

Notes
　1.The maximum allowable tension when using a 1-pitch/2-pitch offset link (OL, 2POL) is 60% of the above.
　2.Made to order


Principal dimensions 　mm

Pitch
P		 Roller dia.
R		 Inner link inner width
W		 Plate Pin Transverse pitch
C
mm
T1 T2 H h D L1 L2 L
31.75 19.05 19.56 3.4 4.4 26.0 26.0 10.19 38.25 41.45 84.636.45

Notes
　1.The outer plate thickness values are for single-strand chain. For multi-strand chain, the values may differ according to the horizontal pitch dimensions.
　2.Connecting links are cotter pin type.


Applicable connecting link

Type Connecting link Offset link 2-pitch
offset link
Model No. RS20B-2-MWJLRS20B-2-OLRS20B-2-2POL
Price Contact us for details. Contact us for details. Contact us for details.
Delivery Contact us for details. Contact us for details. Contact us for details.

Transmission Capacity Table 　kW　1.7 multiplied multi-strand coefficient

Small
sprocket
no. of teeth
Small sprocket RPM 　r/min
10 25 50 100 150 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1600 1800 2000 2200 2400 2600
Lubrication method AI Lubrication method AII Lubrication method B Lubrication method C
9 1.05 2.41 4.51 8.40 12.1 15.7 22.6 29.2 35.7 42.2 37.6 30.8 25.8 21.9 19.0 16.7 14.8 13.3 10.9 9.11 7.79 6.75 5.92 5.25
10 1.19 2.70 5.05 9.42 13.6 17.5 25.3 32.8 40.1 47.3 44.0 36.0 30.3 25.8 22.3 19.6 17.3 15.6 12.7 10.7 9.11 7.91 6.94 6.15
11 1.31 2.99 5.59 10.4 15.0 19.6 28.1 36.4 44.4 52.4 50.8 41.5 34.9 29.8 25.8 22.6 20.1 18.0 14.7 12.3 10.5 9.11 7.99 7.09
12 1.45 3.30 6.14 11.5 16.5 21.4 30.8 40.0 48.8 57.5 57.8 47.4 39.6 33.8 29.4 25.8 22.8 20.4 16.7 14.0 12.0 10.4 9.11 2.99
13 1.58 3.59 6.70 12.5 18.0 23.3 33.7 43.5 53.2 62.7 65.3 53.4 44.7 38.3 33.2 29.1 25.8 23.1 18.9 15.8 13.5 11.7 10.3
14 1.70 3.89 7.26 13.5 19.6 25.3 36.4 47.1 57.6 68.0 72.9 59.7 50.0 42.7 37.1 32.5 28.7 25.8 21.1 17.7 15.1 13.1 11.5
15 1.84 4.18 7.82 14.6 21.1 27.2 39.3 50.8 62.1 73.3 80.9 66.1 55.4 47.4 41.0 36.0 32.0 28.6 23.5 19.6 16.7 14.5 12.7
16 1.97 4.49 8.38 15.6 22.6 29.2 42.0 54.4 66.6 78.5 89.1 72.9 61.0 52.2 45.2 39.6 35.2 31.5 25.8 21.6 18.4 16.0 14.0
17 2.11 4.79 8.96 16.7 24.1 31.1 44.9 58.1 71.1 83.8 96.2 79.9 67.0 57.1 49.5 43.5 38.6 34.5 28.2 23.6 20.2 17.5 15.4
18 2.24 5.10 9.52 17.9 25.7 33.2 47.8 61.9 75.7 89.1 102 87.0 72.9 62.2 53.9 47.4 42.0 37.6 30.8 25.8 21.9 19.0 3.08
19 2.36 5.41 10.1 18.9 27.2 35.2 50.7 65.6 80.2 94.5 108 94.4 79.1 67.5 58.5 51.3 45.6 40.8 33.3 27.9 23.8 20.7
20 2.50 5.71 10.7 19.9 28.7 37.2 53.6 69.4 84.7 99.8 114 101 85.3 72.9 63.2 55.4 49.1 44.0 36.0 30.3 25.8 22.3
21 2.64 6.02 11.3 20.9 30.3 39.1 56.4 73.1 89.3 105 120 109 91.8 78.4 68.0 59.7 52.9 47.4 38.8 32.5 27.7 24.0
22 2.77 6.34 11.8 22.1 31.8 41.1 59.3 76.8 94.0 110 127 117 98.4 84.2 72.9 63.9 56.8 50.8 41.5 34.9 29.8 25.8
23 2.91 6.65 12.4 23.1 33.3 43.2 62.2 80.6 98.6 116 133 125 105 89.9 77.9 68.3 60.7 54.2 44.4 37.2 31.8 26.4
24 3.06 6.95 13.0 24.3 34.9 45.2 65.1 84.5 103 121 139 133 112 95.9 83.1 72.9 64.6 57.8 47.4 39.6 33.8 11.0
25 3.20 7.28 13.6 25.3 36.6 47.3 68.2 88.2 107 126 146 142 119 101 88.2 77.5 68.7 61.5 50.3 42.2 36.0
26 3.33 7.58 14.2 26.4 38.1 49.3 71.1 92.0 112 132 152 150 126 108 93.7 82.3 72.9 65.3 53.4 44.7 38.3
28 3.60 8.23 15.4 28.6 41.3 53.4 77.0 99.6 121 143 164 168 141 120 104 91.8 81.4 72.9 59.7 50.0 42.7
30 3.88 8.86 16.5 30.8 44.4 57.6 83.0 107 131 154 178 187 156 133 116 101 90.4 80.9 66.1 55.4 32.3
32 4.17 9.50 17.7 33.2 47.6 61.7 88.9 115 140 165 190 205 173 147 127 112 99.6 89.1 72.9 61.0
35 4.59 10.5 19.6 36.4 52.5 68.0 97.9 126 155 181 209 236 197 168 146 128 113 101 83.5 69.9
40 5.30 12.1 22.6 42.2 60.7 78.5 113 146 178 210 243 273 241 205 178 156 139 124 101
45 6.02 13.7 25.7 47.8 68.9 89.3 128 166 204 239 275 311 289 246 212 187 165 148 72.6

Notes
　1.kW ratings when using a 1-pitch offset link (OL) are 80% of the above.
　2.Contact us if you use at the kW ratings colored in gray.

Lubrication method AI AII B C

More details

Method Manual lubrication Drip lubrication Oil bath or slinger disc Forced lubrication