1 1/4" (20B) Simplex Cast Iron Spockets

High quality 1 1/4" 20B cast iron British Standard pitch sprockets in the most popular sizes. If the size you require is not listed, please contact us and we will check for availability.

Cast G20

Bore size is subject to change from table below.

These gears are supplied with a pilot bore without provision for shaft fixing. The bore can be machined out to a larger accurate diameter (subject to boss size) although many users find the pilot bore quite acceptable. The machining facilities at Gears and Sprockets are limited to smaller gears, those we can machine will have the relevant options available in drop down boxes on the product page. See the 'Custom Machining' tab where applicable on the product page for more information.

Tooth radius: r3 = 32
Radius size: C = 3.5
Tooth width: B1 = 18.5

All dimensions subject to change, if a dimension is critical to your application, please contact us for confirmation.

Part No. Code No. teeth Outside dia. de Pitch dia. dp Boss dia. Bore D1* Overall width A
Contact G&S CS10SR30C 30 318.9 303.75 115 34 70
7827-143 CS10SR38C 38 399.6 384.49 125 35 70
7827-148 CS10SR45C 45 470.3 455.17 125 35 70
7827-152 CS10SR57C 57 591.5 576.36 135 40 80
7827-157 CS10SR76C *76 783.5 768.32 140 40 90

* Simplex sprockets with rim reinforcement on both sides

* Bore Ø H12