Single sprocket with hub, pitch 3/4", 21 teeth
- Brand
- MR
- Category
- Power transmission
- Subcategory
- Sprockets and gears
- Series
- paso 3/4"
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Description
MR Piñón simple 3/4" Z21 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 3/4" Z21 and any equivalents.
For 3/4" pitch chain drives, the simplex sprocket Z21 with hub is a practical choice when you need a direct shaft mount. It is supplied in SAE 1045 steel and is intended for power transmission systems where the fit between chain and sprocket matters.
This sprocket has a simplex row and a hub that mounts directly on the shaft with a keyway, so no extra adapters are required. It is made of SAE 1045 steel, which provides toughness and wear resistance for continuous industrial service. The hub can be secured with set screws or through bolts, depending on your equipment design.
You will find it in 3/4" pitch chain drives across conveyors, bucket elevators, agricultural machines, mixers and motion systems in industrial plants. It also suits applications where shafts need to be synchronized at low or medium speed. With proper lubrication and alignment checks, it handles dusty, humid or variable-load environments.
When selecting this sprocket, consider the tooth count of both driving and driven sprockets, the transmission ratio, the power to transmit and the working speed. Confirm that the shaft diameter matches the hub bore and that the keyway is compatible. Chain tension and sprocket alignment should be checked to avoid premature wear. The MR team can help you choose if needed.
If this sprocket does not fit your application, we can suggest an equivalent. Send the current part number, number of teeth, pitch and shaft dimensions, and we can also review variants in other materials or with special heat treatment. The goal is to match your machine without complications.
To request a quote for this sprocket or a similar one, contact us by WhatsApp or email with the part number MR-PINON-SIMPLE-3-4-Z21 or your application details. We will reply with the technical data and quote you need.
Dimensions
- Pitch
- 3/4"
- Teeth (z)
- 21
- Material
- SAE 1045 steel
- Type
- Single sprocket with hub
Frequently asked questions
- Is this sprocket suitable for 3/4" pitch chains?
- Yes, it is designed for 3/4" pitch chains. Make sure the chain pitch matches and the tooth count fits your transmission ratio. If you have doubts, share your machine data with us.
- What material is the simplex sprocket 3/4" Z21 made of?
- It is manufactured in SAE 1045 steel, a carbon steel with good mechanical strength and hardenability. It is suitable for power transmission under normal service conditions with proper lubrication.
- Can I request a different size or a sprocket with more teeth?
- Yes, we offer made-to-order sprockets. Send us the part number, desired number of teeth, pitch and shaft dimensions. We evaluate feasibility and quote you. We can also analyze other materials or heat treatments.