Spur gear module 3 z=28 with hub
Available product promotions:
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Weight1,65kg
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UPC Code5908453536983
Product Description
Spur gear module 3, z=28, with hub
The module 3 spur gear z=28 with hub is a precision gear transmission component designed to transmit high torques at a constant ratio. The base material is C45E structural steel (EN 10083-1) - a proven choice for gear transmission parts operating in European industry.
Technical data
| Module (m) | 3 |
| Pressure angle | 20° |
| Number of teeth (z) | 28 |
| Type | Gear with hub |
| Outside diameter (De) | 90 mm |
| Pitch diameter (Dp) | 84 mm |
| Hub outer diameter (d) | 60 mm |
| Pilot bore diameter (D) | 16 mm |
| Tooth width (h) | 30 mm |
| Overall hub height (A) | 50 mm |
| Weight | 1.65 kg |
| Material | C45E steel (UNI EN 10083-1) |
Frequently asked questions
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).
In which applications do helical module gears perform well?
Helical teeth ensure smoother engagement, which drastically reduces noise and vibration at high rotational speeds. They are used in precision speed reducers and machine tools, bearing in mind, however, the need to use thrust bearings (absorbing axial forces).
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).
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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Weight1,65kg
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UPC Code5908453536983