PTI Bearing Catalog - Norfolkbearings.com

Metric Sprockets
ISO 12B Plate Type A
DIN 8187/ISO R 606
Chain Size: 12B-1 (3/4” x 7/16”)
Pitch: 19.05 mm
Roller Width: 11.68 mm
Roller Dia.: 12.07 mm
Spkt. Width: 11.1 mm (bf 1 )
Material: Steel C 45
bf 1
d 1
d o
d k
Note: Double and triple sprockets including
stainless steel available on request.
Part No.
Teeth
d o
mm
d k
mm
d 1
mm
Weight
kg
12B-8A 8 49.8 57.6 12 0.15
12B-9A 9 55.7 62.0 12 0.15
12B-10A 10 61.6 69 12 0.20
12B-11A 11 67.6 75 14 0.24
12B-12A 12 73.6 82 14 0.29
12B-13A 13 79.6 88 14 0.35
12B-14A 14 85.6 94 14 0.41
12B-15A 15 91.6 100 14 0.47
12B-16A 16 97.6 105 14 0.54
12B-17A 17 103.7 112 14 0.62
12B-18A 18 109.7 118 14 0.70
12B-19A 19 115.7 124 14 0.78
12B-20A 20 121.8 130 14 0.87
12B-21A 21 127.8 136 16 0.95
12B-22A 22 133.9 142 16 1.05
12B-23A 23 139.9 149 16 1.15
12B-24A 24 145.9 154 16 1.26
12B-25A 25 152.0 160 16 1.37
12B-26A 26 158.0 166 16 1.50
12B-27A 27 164.1 173 16 1.64
12B-28A 28 170.1 179 16 1.78
12B-29A 29 176.2 184 16 1.88
12B-30A 30 182.3 191 16 1.99
12B-31A 31 188.3 196 20 2.12
12B-32A 32 194.4 204 20 2.26
12B-33A 33 200.4 209 20 2.38
12B-34A 34 206.5 215 20 2.56
12B-35A 35 212.5 221 20 2.70
12B-36A 36 218.6 227 20 2.84
12B-37A 37 224.6 233 20 3.38
12B-38A 38 230.7 239 20 3.21
12B-39A 39 236.7 245 20 3.40
12B-40A 40 242.8 252 20 3.58
12B-41A 41 248.8 257.5 25 3.72
12B-42A 42 254.9 264 25 3.93
12B-43A 43 261.0 270.5 25 3.98
12B-44A 44 267.0 276.5 25 4.40
12B-45A 45 273.1 283 25 4.60
12B-46A 46 279.2 288 25 4.93
12B-48A 48 291.3 301 25 5.13
12B-49A 49 297.3 306 25 5.40
12B-50A 50 303.4 313 25 5.64
12B-54A 54 327.6 337 25 6.62
12B-57A 57 345.8 355 25 7.56
12B-60A 60 364.0 373 25 8.20
12B-65A 65 394.3 404 25 9.60
12B-70A 70 424.6 434 30 11.25
12B-76A 76 461.0 471 30 13.08
12B-80A 80 485.2 494 30 15.19
12B-90A 90 545.8 555 30 18.89
12B-95A 95 576.2 585 30 21.12
355 P.T. International Corp.