Spur gear module 2.5 z=55 with hub
Available product promotions:
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Weight3,52kg
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UPC Code5908453536563
Product Description
Spur gear module 2.5, z=55, with hub
This module 2.5 spur gear (55 teeth, with hub) is used wherever reliable, maintenance-free power transmission via involute gearing is required. 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) | 55 |
| Type | Gear with hub |
| Outside diameter (De) | 142.5 mm |
| Pitch diameter (Dp) | 137.5 mm |
| Hub outer diameter (d) | 90 mm |
| Pilot bore diameter (D) | 20 mm |
| Tooth width (h) | 25 mm |
| Overall hub height (A) | 40 mm |
| Weight | 3.52 kg |
| Material | C45E steel (UNI EN 10083-1) |
Frequently asked questions
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.
Can gears with different modules be combined in one gearbox?
Absolutely not. Teeth of different modules differ in size and pitch. Any attempt to mesh them will end in the drive jamming or the teeth breaking off immediately on the first revolution of the shaft.
Why is precise machining of module gears crucial for drive service life?
A precisely cut tooth involute guarantees that the gears roll on each other without micro-impacts or slippage. This reduces friction lowers the operating temperature and dramatically extends the service life of the entire gearbox.
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.
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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Weight3,52kg
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UPC Code5908453536563