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20B Duplex 17 Tooth Pilot Bore Sprocket

Variation Not Available
CS10DR17
Low Stock
£ 120.08 Inc VAT £ 100.07 Ex VAT

Pitch - 20B

No of Teeth - 17

No of Strands - Duplex

Bore Type - Pilot Bore

Series - British Standard

Material - Steel

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SPECIFICATION
FURTHER INFO

BS (20B) Sprockets – 1 1/4

  • Tooth radius: r3 = 32
  • Radius size: C = 3.5
  • Tooth width: B1 = 18.5
  • Tooth width: b1 = 18.2
  • Tooth width: B2 = 54.6
  • Tooth width: B3 = 91
No. teeth Outside dia. de Pitch dia. dp Simplex Duplex Triplex No. teeth Outside dia. de Pitch dia. dp Simplex Duplex Triplex
dm D1* A dm D1* A dm D1* A dm D1* A dm D1* A dm D1* A
8 98.1 82.96 53 20 40 53 20 75 53 20 110 25 268.5 253.33 140 25 55 140 25 80 140 25 115
9 108 92.84 63 20 40 63 20 75 63 20 110 26 278.6 263.40 150 25 55 150 25 80 150 25 115
10 117.9 102.74 70 20 40 70 20 75 70 20 110 27 288.6 273.48 150 25 55 150 25 80 150 25 115
11 127.8 112.68 77 20 45 80 20 80 80 20 115 28 298.7 283.56 150 25 55 150 25 80 150 25 115
12 137.8 122.68 88 20 45 90 20 80 90 20 115 29 308.8 293.65 150 25 55 150 25 80 150 25 115
13 147.8 132.65 98 20 45 100 20 80 100 20 115 30 318.9 303.75 150 25 55 150 25 80 150 25 115
14 157.8 142.68 108 20 45 110 20 80 110 20 115 31 329 313.85 150 25 55 150 25 80 150 30 115
15 167.9 152.72 118 20 45 120 20 80 120 20 115 32 339.1 323.91 150 25 55 150 25 80 150 30 115
16 177.9 162.75 120 25 50 120 25 80 120 25 11 33 349.2 334.01 150 25 55 150 25 80 150 30 115
17 187.9 172.78 120 25 50 120 25 80 120 25 115 34 359.3 344.10 150 25 55 150 25 80 150 30 115
18 198 182.85 120 25 50 120 25 80 120 25 115 35 369.4 354.20 150 25 55 150 25 80 150 30 115
19 208.1 192.91 120 25 50 120 25 80 120 25 115 36 379.5 364.30 150 25 55 150 30 80 150 30 115
20 218.1 202.98 120 25 50 120 25 80 120 25 115 37 389.5 374.39 150 25 55 150 30 80 150 30 115
21 228.2 213.04 140 25 55 140 25 80 140 25 115 38 399.6 384.49 150 25 55 150 30 80 150 30 115
22 238.3 223.11 140 25 55 140 25 80 140 25 115 39 409.7 394.59 150 25 55 150 30 80 150 30 115
23 248.3 233.17 140 25 55 140 25 80 140 25 115 40 419.8 404.66 150 25 55 150 30 80 150 30 115
24 258.4 243.23 140 25 55 140 25 80 140 25 115

* Bore Ø H12

All dimensions in mm. Intermediate sizes & special sprockets to drawing up to 1000mm diameter. Standard to ISO/R 606

BS Cast Iron Sprockets 20B – ISO/R 606

Cast Iron Sprockets (20B) 1 1/4″ x 3/4″ (British Standard) to ISO/R 606
No. teeth de dp Simplex Duplex Triplex No. teeth de dp Simplex Duplex Triplex
dm D1* A dm D1* A dm D1* A dm D1* A dm D1* A dm D1* A
30 318.9 303.75 115 34 70 130 39 80 57 591.5 576.36 135 40 80 160 50 100 180 60 125
38 399.6 384.49 125 35 70 140 44 90 180 56 110 **76 783.5 768.32 140 40 90 180 50 100
45 470.3 455.17 125 35 70 140 44 90

** Simplex sprockets with rim reinforcement on both sides

*Bore Ø H12

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