Spur gear module 5 z=25 with hub
Available product promotions:
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Weight5,74kg
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UPC Code5908453538031
Product Description
Spur gear module 5, z=25, with hub
The spur gear module 5 shown, 25 teeth, with hub, is a basic component of module drives - it meshes with any other gear or gear rack (toothed rack) of the same module and pressure angle 20°. The standard material is C45E steel (UNI EN 10083-1), widely used in the construction of gear transmissions, gear racks and module drives.
Technical data
| Module (m) | 5 |
| Pressure angle | 20° |
| Number of teeth (z) | 25 |
| Type | Gear with hub |
| Outside diameter (De) | 135 mm |
| Pitch diameter (Dp) | 125 mm |
| Hub outer diameter (d) | 90 mm |
| Pilot bore diameter (D) | 25 mm |
| Tooth width (h) | 50 mm |
| Overall hub height (A) | 75 mm |
| Weight | 5.74 kg |
| Material | C45E steel (UNI EN 10083-1) |
Frequently asked questions
How do you calculate the ratio of a gear pair of two module gears with different numbers of teeth?
The ratio is calculated as the quotient of the number of teeth of the driven gear to that of the driving gear (i = Z2/Z1); the module must be identical for both gears, otherwise meshing will not work at all.
How do you set the correct centre distance between two module gears?
The centre distance is the sum of the pitch diameters of both gears divided by two (a = (Dp1+Dp2)/2); too small a distance causes seizing, and too large a distance - excessive backlash and loss of quiet running.
How should gears be stored correctly before installation?
Preferably in a dry room, protected against moisture and dust, with a light layer of preservative oil on the teeth and bore - especially important for C45E carbon steel, which can start to corrode without protection.
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?
Used in the construction and servicing of gear reducers and gear transmissions for agricultural and construction machinery, and wherever precise and 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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Weight5,74kg
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UPC Code5908453538031