Sprockets 1 1/4 inch B.S. British Standard Cast Iron

Cast Iron Sprockets 1 1/4" x 3/4"
British Standard
Steel C45, UNI7845 to DIN 8187 ISO/R 606

No. teeth	de	dp	Simplex			Duplex			Triplex
No. teeth	de	dp	dm	D1	A	dm	D1	A	dm	D1	A
30	318.9	303.75	115	34	70	130	39	80
38	399.6	384.49	125	34	70	140	44	90	170	55	110
45	470.3	455.17	125	34	70	140	44	90
57	591.5	576.36	135	39	80	160	49	100	180	62	125
76	783.5	768.32	140	49	90	180	55	100

* simplex sprockets with rim reinforcement on both sides
Stock sizes
Available on short delivery

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 = 91.0

All dimensions in mm

Intermediate sizes & special sprockets to drawing up to 1000mm diameter

Please note : All dimensions including bore sizes subject to change.
If a dimension is critical to your application please contact our sales department for confirmation.
for special sprockets or reworked sprockets please contact our manufacturing department.

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