Sprocket 12B-1 z=35 with hub

Product Description

Sprocket 12B-1 z=35, with hub

Simplex sprocket 12B-1 with hub, 35 teeth - designed for chain with a pitch of 3/4" (19.05 mm). The sprocket complies with DIN 8187 / ISO 606 and is made of C45E steel (EN 10083-1); the teeth are not hardened, which lowers the cost of the sprocket and makes it easier to machine (e.g. deep boring of the hub) throughout the entire volume of the material.

Technical data

Frequently asked questions

Do I need to select dedicated bearings for a sprocket with hub?

A sprocket with hub mounted with a key does not require its own bearings - the load is carried by the bearings of the shaft on which the sprocket is mounted. A dedicated bearing built into the sprocket is only needed for tensioning or guide sprockets mounted on an axle without its own drive.

How can you check whether the chain in an existing drive is already excessively elongated (stretched)?

Stretch out a section of a dozen or so chain links and compare its length with the catalogue dimension - an elongation of more than approx. 2-3% means the chain is due for replacement. A stretched chain no longer seats properly on the sprocket teeth, which accelerates the wear of both components, so it is better to replace it before it damages the sprocket as well.

What happens when a sprocket operates under a greater load than intended?

Overloading first accelerates normal tooth wear, and with sudden overloads (e.g. machine blockage) the teeth may become permanently bent or sheared. In such cases, using an overload clutch in the system is often a better solution than choosing an oversized sprocket "just in case".

Does the machine's operating temperature matter when choosing the sprocket material?

Yes - at very low or very high temperatures the mechanical properties of steel or cast iron change, and lubricants may change viscosity or thicken. Under unusual thermal conditions (cold stores, furnaces, dryers), it is advisable to consult the supplier before selecting a specific material variant.

Where is this product used?

12B-1 sprockets operate in drives of construction machinery, goods lifts, aggregate conveyors and woodworking machines - wherever tooth durability under load matters.

When placing your order, please check the current stock level of this gear - the lead time depends on it and is clearly stated according to the quantity available in the given warehouse.

Product photos are for illustrative purposes only.