Sprocket 12B-1 (3/4") z=114 with hub, cast iron

Product Description

Sprocket 12B-1 (3/4") z=114 with hub, cast iron fits 12B-1 roller chain (European standard DIN 8187 / ISO 606), single-strand (simplex), with a pitch of 19.05 mm (3/4"). It has 114 teeth and is made of EN-GJL-250 cast iron.

The sprocket has a one-sided hub with a diameter of 100 mm and a pilot bore of Ø29 mm, which is bored to the shaft size and completed with a keyway or a set screw hole. The total width of the sprocket is 65 mm.

Technical data

Applications

It is used in agricultural machinery, including seed drills, spreaders and grain conveyors. The cast iron design works well for large sprockets in reduction gears, where rigidity and vibration damping matter.

Frequently asked questions

Which chain does the 12B-1 z=114 sprocket fit?

12B-1 roller chain to European standard DIN 8187 / ISO 606, with a pitch of 19.05 mm. A simplex sprocket requires a single-strand (simplex) chain.

Does it fit ASA 60 chain?

No. ASA 60 chain (American standard) has the same pitch, but a different roller diameter (11.91 mm instead of 12.07 mm) and a different inner width (12.7 mm instead of 11.68 mm). The 12B sprocket is designed for European-standard chain, so the two systems should not be mixed.

How do I check sprocket run-out after installation?

A dial indicator on a magnetic stand is used. Place the tip against the rim or side of the sprocket and turn the shaft, reading the deviations. Excessive run-out usually means a crooked bore or a damaged shaft.

How does tooth wear affect machine operation?

Worn teeth make the chain engage the sprocket unevenly and abruptly. This causes vibrations that are passed on to shafts and bearings and accelerate wear of the whole drive.

How do I check the pitch of a sprocket?

The sprocket pitch matches the chain pitch - it is the distance between the centres of adjacent teeth measured on the pitch circle. The easiest way to check it is to place a section of matching chain on the sprocket: it should sit on the teeth without tension. This sprocket has a pitch of 19.05 mm (3/4").

What does the lead time depend on?

When ordering, please check the current stock level of this sprocket - the lead time depends on it and is clearly stated according to the quantity available in each warehouse. The stock level is shown above the product price and may vary depending on the warehouse.

Product photos are for illustration purposes only.