Single sprocket with hub, pitch 1/2", 28 teeth
- Brand
- MR
- Category
- Power transmission
- Subcategory
- Sprockets and gears
- Series
- paso 1/2"
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Description
MR Piñón simple 1/2" Z28 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 Piñón simple 1/2" Z28 and any equivalents.
For drives built around ANSI 40 chain, this EMMAR simplex sprocket brings a 28-tooth, 1/2" pitch configuration in SAE 1045 steel. The hub lets it sit directly on a keyed shaft, so a worn sprocket on a parallel-shaft drive can be pulled and replaced without reworking the assembly. MR supplies it as a stocked power transmission line item for maintenance and MRO buyers.
Reading the designation is straightforward. Simplex means one row of teeth. The 1/2" figure is the chain pitch, the center-to-center distance between adjacent teeth, and it matches ANSI 40 chain. Z28 is the tooth count, which sets the ratio against whatever sprocket runs on the other end of the drive. The hub is the raised central body that slips over the shaft; its keyway locks the sprocket against rotation. Material is SAE 1045 steel.
Typical installations include machine tools, conveyors, mixers, elevators and process equipment, plus low and medium speed drives where a defined ratio and fast changeout matter. Because the sprocket is a wear part, keeping the pitch and tooth count on file makes reordering quick and avoids pulling the wrong item from the crib. Plants that have already standardized on 1/2" pitch tend to keep this size on the shelf.
Before ordering, confirm three things: the chain pitch, the tooth count needed for your ratio, and the shaft diameter with its keyway. Check sprocket alignment at installation so the chain does not pick up side load, and keep the chain lubricated and correctly tensioned. If the shaft measures differently, a custom hub sprocket or an adapter bushing is worth evaluating.
To get a quote, send the code MR-PINON-SIMPLE-1-2-Z28, or simply list pitch, teeth, shaft diameter and hub type for the part you are replacing. From there we can match an alternative from the line we supply or look at machining something similar. We can also confirm whether your drive runs simplex or multiple strand chain.
Reach the team on WhatsApp or by email with the code. If you are unsure about chain compatibility or how the hub fits your shaft, send a photo or the drawing and we will review it. MR Industrial Accessories supplies power transmission components and answers with the technical detail you need to make the call.
Dimensions
- Pitch
- 1/2"
- Teeth (z)
- 28
- Material
- SAE 1045 steel
- Type
- Single sprocket with hub
Frequently asked questions
- What does simplex with hub mean on this sprocket?
- Simplex refers to a single row of teeth cut for 1/2" pitch chain. The hub is the central body that fits over the shaft, with a keyway to hold it in place. A hubless sprocket, by contrast, mounts on a bushing or flange instead.
- How can I tell if this sprocket will replace the one on my machine?
- Check the chain pitch, the number of teeth and the shaft diameter including the keyway. When those match, the sprocket is compatible. If the shaft is a different size, an adapter bushing or a custom sprocket can be considered. Send us the data and we will advise.
- Is a different tooth count available?
- Yes. Other tooth counts for the same 1/2" pitch can be evaluated within the line we supply. Send the pitch, teeth and shaft diameter you need and we will quote the alternative, and we can check the resulting ratio as well.