Double sprocket with hub, pitch 1/2", 12 teeth

MR Piñón doble 1/2" Z12 is a sprockets and gears reference, within Power transmission. Request a quote for Piñón doble 1/2" Z12 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 1/2" double sprocket with 12 teeth is a chain drive sprocket, machined with two chain rings on a single hub. It is used to drive two chains in parallel from a single shaft, or to build simple reductions where mounting space is limited.

This item is a double sprocket with hub, with 1/2" pitch and 12 teeth (z), machined in SAE 1045 steel. The designation "double" means it has two toothed rings mounted on the same part, so a single shaft can drive two chains at the same time. The hub is the central body that sits on the shaft and concentrates the torque; it is advisable to check its diameter and fastening system before mounting. The 1/2" pitch corresponds to ANSI 40 chain, the most widespread in light and medium-duty drives.

Typical applications appear in belt and roller conveyors, bucket elevators, packaging lines, woodworking machines and material handling equipment where two synchronized chain strands are needed. In these cases, the double sprocket simplifies mounting and reduces the number of parts on the shaft.

To select the right sprocket, take into account the chain pitch, the number of teeth, the shaft diameter and the type of hub fastening. With 12 teeth, the sprocket is the smallest in the 1/2" pitch series, which gives high reduction ratios but also greater demand on the chain due to the polygonal effect. During mounting, align both chain rings with their respective strands, check the tension of each chain separately and verify that the hub is well centered and axially locked.

If you need an equivalent or a nearby size, the most practical thing is to send us the part number of the sprocket you are replacing, the number of teeth, the chain pitch and the shaft diameter. With that data we can locate the part within the 1/2" pitch series or evaluate a custom manufacturing. A photo of the mounted sprocket and the outside diameter measurement also help to confirm the number of teeth when in doubt.

To request a quote for this 1/2" Z12 double sprocket, write to us on WhatsApp and send us the part number MR-PINON-DOBLE-1-2-Z12. At MR Accesorios Industriales we have more than 80 years in the field and can advise you on the chain, the hub and the mounting accessories that go with this part.