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Chain Product » Drive chain » BS/DIN Chain Series
BS/DIN Chain Series
British Standard Roller Chains

Single, Double and Triple Strand TSUBAKI BS Roller Chains are standardized in accordance with the ISO type "B". The dimensions are fully interchangeable with chains built according to the BS228: 1970 and the DIN8187.

  • Single Strand
  • Double Strand
  • Triple Strand
British Standard Roller Chain
Dimensions-mm
Chain No. ISO BS/DIN No. Pitch P Roller Dia. R Width between Roller Link Plates W
RF06B * 06B 9.525 6.35 5.72
RS08B 08B 12.70 8.51 7.75
RS10B 10B 15.875 10.16 9.65
RS12B 12B 19.05 12.07 11.68
RS16B 16B 25.40 15.88 17.02
RS20B 20B 31.75 19.05 19.56
RS24B 24B 38.10 25.40 25.40
RS28B 28B 44.45 27.94 30.99
RS32B 32B 50.80 29.21 30.99
RS40B 40B 63.50 39.37 38.10
Dimensions-mm
Chain No. Pin Link Plate Transverse Pitch
C
Dia.
D
From Pin Head to C.L.
L1
From Pin end to C.L.
L2
Thickness
T(RL)
Thickness
t(PL)
Height
H(max)
RF06B * 3.28 6.35 7.65 1.27 1.0 8.2 -
RS08B 4.45 8.4 10.0 1.6 1.6 11.8 -
RS10B 5.08 9.55 11.25 1.5 1.5 14.7 -
RS12B 5.72 11.2 13.1 1.8 1.8 16.1 -
RS16B 8.28 17.9 19.95 4.0 3.2 21.0 -
RS20B 10.19 19.9 23.1 4.4 3.4 26.0 -
RS24B 14.63 26.65 31.85 6.0 5.6 33.4 -
RS28B 15.90 32.45 37.45 7.5 6.3 36.4 -
RS32B 17.81 32.1 37.7 7.0 6.3 42.2 -
RS40B 22.89 39.25 45.05 8.5 8.0 52.9 -
Dimensions-mm
Chain No. Minimum Tensile Strength
kN {kgf}
Bearing Area (Nominal)
cm2
Approx. Mass
kg/m
Number of Links per unit
(5 mts)
RF06B * 9.0 {920} 0.28 0.39 526
RS08B 19.0 {1,930} 0.50 0.70 394
RS10B 23.0 {2,340} 0.67 0.95 316
RS12B 31.7 {3,160} 0.89 1.25 264
RS16B 70.0 {7,100} 2.10 2.70 198
RS20B 98.1 {10,000} 2.95 3.85 158
RS24B 167 {17,000} 5.54 7.45 132
RS28B 200 {20,400} 7.40 9.45 114
RS32B 255 {26,000} 8.11 10.25 100
RS40B 373 {38,000} 12.76 16.35 80
British Standard Roller Chain - Double & Triple strand
Dimensions-mm
Chain No. ISO BS/DIN No. Pitch
P
Roller Dia.
R
Width between Roller Link Plates
W
RF06B-2 *^ 06B-2 9.525 6.35 5.72
RS08B-2 ^ 08B-2 12.70 8.51 7.75
RS10B-2 10B-2 15.875 10.16 9.65
RS12B-2 12B-2 19.05 12.07 11.68
RS16B-2 16B-2 25.40 15.88 17.02
RS20B-2 20B-2 31.75 19.05 19.56
RS24B-2 24B-2 38.10 25.40 25.40
RS28B-2 28B-2 44.45 27.94 30.99
RS32B-2 32B-2 50.80 29.21 30.99
RS40B-2 40B-2 63.50 39.37 38.10
Dimensions-mm
Chain No. Pin Link Plate Transverse Pitch
C
Dia.
D
From Pin Head to C.L.
L1
From Pin end to C.L.
L2
Thickness
T(RL)
Thickness
t(PL)
Height
H(max)
RF06B-2 *^ 3.28 11.43 12.57 1.27 1.0 8.2 10.24
RS08B-2 ^ 4.45 15.3 16.9 1.6 1.6 11.8 13.92
RS10B-2 5.08 17.85 19.55 1.5 1.5 14.7 16.59
RS12B-2 5.72 20.85 22.75 1.8 1.8 16.1 19.46
RS16B-2 8.28 33.55 35.75 4.0 3.2 21.0 31.88
RS20B-2 10.19 38.25 41.45 4.4 3.4 26.0 36.45
RS24B-2 14.63 50.8 56.0 6.0 5.6 33.4 48.36
RS28B-2 15.90 62.15 67.15 7.5 6.3 36.4 59.56
RS32B-2 17.81 61.25 66.85 7.0 6.3 42.2 58.55
RS40B-2 22.89 75.4 81.2 8.5 8.0 52.9 72.29
Dimensions-mm
Chain No. Minimum Tensile Strength
kN {kgf}
Bearing Area (Nominal)
cm2
Approx. Mass
kg/m
Number of Links per unit
(5 mts)
RF06B-2 *^ 17.0 {1,730} 0.56 0.75 526
RS08B-2 ^ 32.0 {3,260} 1.00 1.35 394
RS10B-2 44.5 {4,540} 1.34 1.85 316
RS12B-2 61.0 {6,220} 1.78 2.50 264
RS16B-2 128 {13,000} 4.20 5.40 198
RS20B-2 197 {20,100} 5.91 7.65 158
RS24B-2 335 {34,100} 11.09 14.65 132
RS28B-2 374 {38,100} 14.81 18.80 114
RS32B-2 485 {49,500} 16.23 20.10 100
RS40B-2 716 {73,000} 25.52 32.00 80
tripDimensions-mm
Chain No. ISO BS/DIN No. Pitch
P
Roller Dia.
R
Width between Roller Link Plates
W
RF06B-3 *^ 06B-3 9.525 6.35 5.72
RS08B-3 ^ 08B-3 12.70 8.51 7.75
RS10B-3 10B-3 15.875 10.16 9.65
RS12B-3 12B-3 19.05 12.07 11.68
RS16B-3 16B-3 25.40 15.88 17.02
RS20B-3 20B-3 31.75 19.05 19.56
RS24B-3 24B-3 38.10 25.40 25.40
RS28B-3 28B-3 44.45 27.94 30.99
RS32B-3 32B-3 50.80 29.21 30.99
RS40B-3 40B-3 63.50 39.37 38.10
Dimensions-mm
Chain No. Pin Link Plate Transverse Pitch
C
Dia.
D
From Pin Head to C.L.
L1
From Pin end to C.L.
L2
Thickness
T(RL)
Thickness
t(PL)
Height
H(max)
RF06B-3 *^ 3.28 16.9 17.5 1.27 1.0 8.2 10.24
RS08B-3 ^ 4.45 22.25 23.85 1.6 1.6 11.8 13.92
RS10B-3 5.08 26.15 27.85 1.5 1.5 14.7 16.59
RS12B-3 5.72 30.6 32.5 1.8 1.8 16.1 19.46
RS16B-3 8.28 49.5 51.7 4.0 3.2 21.0 31.88
RS20B-3 10.19 56.5 59.7 4.4 3.4 26.0 36.45
RS24B-3 14.63 75.1 80.2 6.0 5.6 33.4 48.36
RS28B-3 15.90 91.95 96.95 7.5 6.3 36.4 59.56
RS32B-3 17.81 90.5 96.10 7.0 6.3 42.2 58.55
RS40B-3 22.89 111.5 117.3 8.5 8.0 52.9 72.29
Dimensions-mm
Chain No. Minimum Tensile Strength
kN {kgf}
Bearing Area (Nominal)
cm2
Approx. Mass
kg/m
Number of Links per unit
(5 mts)
RF06B-3 *^ 24.9 {2,540} 0.84 1.11 526
RS08B-3 ^ 47.5 {4,840} 1.50 2.00 394
RS10B-3 66.8 {6,820} 2.01 2.80 316
RS12B-3 92 {9,400} 2.67 3.80 264
RS16B-3 192 {19,600} 6.30 8.00 198
RS20B-3 295 {30,100} 8.86 11.45 158
RS24B-3 500 {51,000} 16.64 21.75 132
RS28B-3 560 {57,100} 22.21 28.20 114
RS32B-3 729 {74,300} 24.34 29.90 100
RS40B-3 1,080 {110,000} 38.28 47.75 80
 
* Flat shape link plate
^ Middle link plate has one solid plate.

Riveted type chain will be supplied unless otherwise specified. Attachment chain is also available.
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