Sprocket 12B-1 z=46 with hub, hardened
Available product promotions:
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Weight9,3kg
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UPC Code5908453541765
Product Description
Sprocket 12B-1 z=46, hardened hub
Simplex sprocket 12B-1 with hardened hub, 46 teeth - designed for chain with a pitch of 3/4" (19.05 mm). As a European manufacturer, Ozdowski supplies the sprocket in C45E steel (EN 10083-1), in accordance with DIN 8187 / ISO 606 - the teeth are induction hardened (45-55 HRC), while the hub remains soft and easy to machine.
Technical data
| Chain | 12B-1 (simplex) |
| Pitch | 3/4" / 19.05 mm |
| Number of teeth (z) | 46 |
| Outside diameter (De) | 287.9 mm |
| Pitch diameter (Dp) | 279.16 mm |
| Hub outer diameter (d) | 118* mm |
| Pilot bore diameter (D) | 25 mm |
| Overall hub height (A) | 61 mm |
| Weight | 9.3 kg |
| Material | C45E steel (EN 10083-1), teeth induction hardened 45-55 HRC |
Frequently asked questions
What causes premature wear of the side faces of the teeth?
This is most often the result of misalignment of the sprockets on the shafts (so-called lateral runout of the drive). The chain does not run straight, and its inner plates catch on the sides of the teeth, wearing them down to bare metal. The system must be realigned immediately.
What is the set screw hole in the hub for?
The threaded hole in the hub is used to screw in a headless screw (a so-called grub screw). It secures the sprocket against axial displacement along the shaft during machine vibration.
How do I bore the hole in a sprocket to fit a motor shaft?
A sprocket with a pilot bore should be clamped in a lathe (gripping the hub to avoid runout) and bored to the required diameter with an H7 tolerance. If the sprocket has hardened teeth, the hub is usually soft and easy to machine.
Can a sprocket with a technological bore be installed without additional machining?
No - the technological bore is deliberately too small to fit a typical shaft. It must be bored on a lathe to the required diameter and, if necessary, a keyway cut according to the requirements of the specific machine.
Where is this product used?
12B-1 sprockets are used in industrial drive transmissions: conveyors, feeders, packaging machines and production lines where precise, repeatable torque transmission 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.
Product Features
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Weight9,3kg
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UPC Code5908453541765