Sprocket 12B-1 z=40 with hub, hardened
Available product promotions:
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Weight5,5kg
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UPC Code5908453541710
Product Description
Sprocket 12B-1 z=40, hardened hub
Sprocket 12B-1, simplex, with 40 teeth and a hardened hub - pitch 3/4" (19.05 mm). The material is carbon steel C45E (EN 10083-1), and the teeth undergo induction hardening to 45-55 HRC - in accordance with DIN 8187 / ISO 606; the hub retains a lower core hardness, so it can be machined safely.
Technical data
| Chain | 12B-1 (simplex) |
| Pitch | 3/4" / 19.05 mm |
| Number of teeth (z) | 40 |
| Outside diameter (De) | 251.3 mm |
| Pitch diameter (Dp) | 242.81 mm |
| Hub outer diameter (d) | 100 mm |
| Pilot bore diameter (D) | 20 mm |
| Overall hub height (A) | 40 mm |
| Weight | 5.5 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.
Does Ozdowski have its own warehouse and fast shipping of parts?
Yes - we know that every minute counts during a production line breakdown, which is why we keep large stocks of sprockets available immediately, allowing lightning-fast shipping and a quick solution to the drive problem.
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.
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.
Where is this product used?
Typical applications of the 12B-1 sprocket: drives for pumps, mixers and industrial fans, as well as control systems for industrial gates and roller shutters, where resistance to continuous operation is required.
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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Weight5,5kg
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UPC Code5908453541710