Sprocket 20B-1 z=34 with hub, hardened
Available product promotions:
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Weight16,8kg
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UPC Code5908453542960
Product Description
Sprocket 20B-1 z=34, hardened hub
Sprocket 20B-1, simplex, with 34 teeth and a hardened hub - pitch 1 1/4" (31.75 mm). Compliance with DIN 8187 / ISO 606 guarantees full interchangeability with chain of the same pitch; C45E steel (EN 10083-1) and induction hardening of the teeth (45-55 HRC) provide high wear resistance while keeping the hub machinable.
Technical data
| Chain | 20B-1 (simplex) |
| Pitch | 1 1/4" / 31.75 mm |
| Number of teeth (z) | 34 |
| Outside diameter (De) | 359.3 mm |
| Pitch diameter (Dp) | 334.10 mm |
| Hub outer diameter (d) | 150* mm |
| Pilot bore diameter (D) | 25 mm |
| Overall hub height (A) | 55 mm |
| Weight | 16.8 kg |
| Material | C45E steel (EN 10083-1), teeth induction hardened 45-55 HRC |
Frequently asked questions
How does material quality prevent the teeth from "shearing" during sudden machine jerks?
Soft, uncertified sheet metal deforms under a sudden jerk - the teeth bend over. Steel from a certified melt, correctly heat-treated, has a high yield strength and withstands a torque surge without permanent deformation.
In what cases are multi-strand sprockets used?
They are used to drive multi-strand chains in heavily loaded machines where there is no room for a wider sprocket with a larger pitch. Several strands distribute the load evenly, preventing premature chain breakage.
How does uneven tooth wear affect machine vibration?
Worn teeth cause the so-called polygon effect - the chain drops off and climbs onto the teeth abruptly, which transmits vibrations to the shafts, destroys the bearings and leads to cracking of welds in the machine.
What is the relationship between the number of teeth of a sprocket and the rotational speed of the drive?
This is the basic principle of the transmission ratio. If there is a small sprocket on the motor (drive) and a large one on the machine, the machine will turn more slowly but gain proportionally greater torque (force).
Where is this product used?
20B-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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Weight16,8kg
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UPC Code5908453542960