Spur gear module 2 z=72 with hub
Available product promotions:
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Weight3kg
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UPC Code5908453535962
Product Description
Spur gear module 2, z=72, with hub
Gear module 2, z=72, with hub - a robust component for building and repairing gear transmissions, reducers and rack drives (gear rack + gear). 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) | 2 |
| Pressure angle | 20° |
| Number of teeth (z) | 72 |
| Type | Gear with hub |
| Outside diameter (De) | 148 mm |
| Pitch diameter (Dp) | 144 mm |
| Hub outer diameter (d) | 80 mm |
| Pilot bore diameter (D) | 20 mm |
| Tooth width (h) | 20 mm |
| Overall hub height (A) | 35 mm |
| Weight | 3 kg |
| Material | C45E steel (UNI EN 10083-1) |
Frequently asked questions
What lubrication is optimal for open module (rack) gear drives?
For open systems (gear + gear rack), it is best to use thick greases with added graphite or copper, which adhere firmly to the teeth and are not flung off by centrifugal force. In very dusty applications, dry Teflon lubricants perform better.
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 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.
Where is this product used?
It performs well in power transmission systems in machine tools, production lines and sliding gates, where it works together with a gear rack of the same module.
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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Weight3kg
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UPC Code5908453535962