Spur gear module 2.5 z=39 with hub
Available product promotions:
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Weight1,715kg
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UPC Code5908453536402
Product Description
Spur gear module 2.5, z=39, with hub
The spur gear module 2.5 with z=39 teeth (with hub) is a universal modular component whose parameters match the entire family of gears and gear racks of the same module. The gear is made of C45E steel (EN 10083-1); the involute tooth profile and 20° pressure angle ensure smooth, quiet meshing with gears or racks of the same module.
Technical data
| Module (m) | 2.5 |
| Pressure angle | 20° |
| Number of teeth (z) | 39 |
| Type | Gear with hub |
| Outside diameter (De) | 102.5 mm |
| Pitch diameter (Dp) | 97.5 mm |
| Hub outer diameter (d) | 60 mm |
| Pilot bore diameter (D) | 16 mm |
| Tooth width (h) | 25 mm |
| Overall hub height (A) | 40 mm |
| Weight | 1.72 kg |
| Material | C45E steel (UNI EN 10083-1) |
Frequently asked questions
How does a module gear differ from a chain sprocket?
A module gear meshes directly with another gear or gear rack, while a sprocket works with a roller chain - they have a different tooth profile and are not interchangeable, even though they look similar from a distance.
How do you mount a module gear using clamping rings?
These rings are slid between the plain shaft and the plain bore of the gear. When the screws are tightened, the ring expands and locks the gear with a force many times greater than a traditional key. This is the ideal solution for module gears operating with changing direction of rotation (no backlash at the key).
Can a module gear be painted or lacquered?
Yes, the external surfaces (sides, circumference) can be protected with lacquer, but the teeth and the mounting bore should remain clean, because the coating would change their actual dimensions and disrupt meshing with the other gear.
Why is the pilot bore in a module gear often smaller than required?
A "rough" bore allows you to bore it out yourself to the exact, non-standard size of the customer's shaft - a ready-made large bore from stock would rarely match the required size perfectly.
Where is this product used?
Typical applications include conveyor drives, packaging machines, industrial automation and positioning systems using a gear and gear rack pair.
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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Weight1,715kg
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UPC Code5908453536402