Sprocket 12B-3 z=114 for Taper-Lock bush 3030, cast iron

Product Description

Sprocket 12B-3 z=114 for Taper-Lock bush 3030, cast iron works with 12B-3 roller chain (European standard DIN 8187 / ISO 606), triple-strand (triplex), 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 seat for a Taper-Lock 3030 clamping bush, so it can be mounted on the shaft without boring the hole or cutting a keyway in the sprocket - simply choose a 3030 bush with a bore that matches the shaft. The hub diameter is 160 mm and the total width of the sprocket is 76 mm. The bush is not included - the 3030 bush can be purchased separately from our range.

Technical data

Applications

It is found in production lines, mixers and screw feeders. The triple-strand version is chosen for very heavily loaded drives where there is no room for a chain with a larger pitch. The cast iron design works well for large sprockets in reduction gears, where rigidity and vibration damping matter.

Frequently asked questions

Which chain does this sprocket fit?

12B-3 roller chain to European standard DIN 8187 / ISO 606, with a pitch of 19.05 mm. A triplex sprocket requires a triple-strand (triplex) 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 mount a sprocket with a Taper-Lock bush?

Insert the bush into the sprocket seat, align the holes and lightly screw in the screws. Then slide the assembly onto the shaft and tighten the screws alternately until the bush is firmly clamped on the shaft.

Can the bush taper be greased before mounting?

No. The bush works by friction, and grease on the tapered surfaces can cause the bush to be drawn in too deep and crack the sprocket hub. The tapered surfaces must be degreased before mounting.

How do I remove a sprocket with a Taper-Lock bush?

Remove the mounting screws and screw one of them into the free dismounting hole. The screw then acts as a puller and pushes the bush out of the sprocket seat.

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.