Spur gear module 2.5 z=39 with hub hardened
Available product promotions:
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Weight1,715kg
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UPC Code5908453536730
Product Description
Spur gear module 2.5, z=39, with hub, hardened
The module 2.5 spur gear z=39 with hub is a precision gear transmission component designed to transmit high torques at a constant ratio. The teeth are induction hardened to 45-55 HRC, which significantly increases wear resistance and extends gear service life in heavily loaded transmissions.
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 (EN 10083-1), teeth induction hardened 45-55 HRC |
Frequently asked questions
Does the tooth shape of a module gear affect smooth running?
Yes, the ideal involute profile achieved through precise machining ensures uniform power transmission. This prevents jerking that could lead to teeth breaking off under load.
How do you cut a keyway in a module gear with a small hub?
In gears with a small hub, the keyway is slotted with great care so as not to weaken the wall above the tooth. If there is not enough space, we recommend dispensing with a standard key (feather key) in favour of mounting with clamping bushes (locking assemblies).
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 can wear of the gears in a module gearbox be diagnosed?
Wear is easiest to spot from a change in the tooth profile - it becomes sharp at the tip, and the backlash increases dramatically, which shows up as loud knocking when the machine changes its direction of rotation.
Where is this product used?
Module gears of this type are used in speed reducers, machine gearboxes, CNC machine tools and in rack drives of sliding and entrance gates.
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 Code5908453536730