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Toothed disc, metal wheel with peripheral teeth and a drilled center for mounting · MR Disco 1/2" Z12
Single disc without hub, pitch 1/2", 12 teeth

MROur own brand

Single disc without hub, pitch 1/2", 12 teeth

Manufacturer part numberDisco 1/2" Z12Also known as: Disco1/2"Z12
Brand
MR
Series
paso 1/2"
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Description

MR Disco 1/2" Z12 belongs to sprockets and gears, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for Disco 1/2" Z12 and any equivalents.

The Disc 1/2" Z12 is a simplex sprocket disc without a hub, supplied by MR Industrial Accessories LLC. It has a 1/2" pitch and 12 teeth, and is machined from SAE 1045 steel. This hubless design is intended for chain drives where space is tight and the disc is mounted directly on a shaft or adapter bushing.

As a simplex disc without hub, it has a central bore for mounting on a shaft or bushing. Because there is no hub, fastening is handled by other elements such as a key, set screws, or a similar system. The SAE 1045 steel construction provides good wear resistance and toughness for power transmission use.

The part number MR-DISCO-1-2-Z12 and the designation Disc 1/2" Z12 both refer to the same item: a 1/2" pitch disc with 12 teeth. Use either reference when you request a quote.

Typical applications include chain drives in agricultural machinery, conveyors, packaging equipment, automatic doors, and linear motion systems. It also appears in gearboxes and mechanisms where a specific ratio is needed in a small space. The compact, hubless format suits designs where the sprocket couples to a stepped shaft or a bearing support.

When selecting this disc, confirm the chain pitch (1/2"), the number of teeth (12), and the central bore diameter that must match your shaft or bushing. Also check the fastening method, since a hubless disc requires an additional securing system. During assembly, align the disc with the mating sprocket or toothed wheel to avoid premature wear and noise. Proper chain lubrication helps extend the service life of the assembly.

If you need a different number of teeth, a different pitch, or a version with a hub, we can source it or suggest an equivalent. Send the part number MR-DISCO-1-2-Z12 or the designation Disc 1/2" Z12 via WhatsApp or email, along with your chain and shaft data. Our team can also advise on compatibility with other transmission components.

Dimensions

Pitch
1/2"
Teeth (z)
12
Material
SAE 1045 steel
Type
Single disc without hub

Frequently asked questions

Is this disc suitable for 1/2" pitch chain?
Yes, the Disc 1/2" Z12 is designed for 1/2" pitch chains. The chain must be of the same pitch to mesh correctly. If you have doubts, send us the part number and we will confirm compatibility.
What material is the disc made of?
It is made from SAE 1045 steel, a carbon steel with good mechanical strength and hardenability. It is suitable for power transmission applications requiring durability and wear resistance.
Can I order a disc with a different number of teeth?
Yes, we supply discs with different numbers of teeth and pitches. Send the part number MR-DISCO-1-2-Z12 via WhatsApp or email and tell us what you need: we will quote the size you are looking for or offer an equivalent alternative.
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