Spur gear module 8 z=12 with hub
Available product promotions:
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Weight4,5kg
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UPC Code5907009385501
Product Description
Spur gear module 8, z=12, with hub
Gear module 8, z=12, with hub - a robust component for building and repairing gear transmissions, reducers and rack drives (gear rack + gear). 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) | 8 |
| Pressure angle | 20° |
| Number of teeth (z) | 12 |
| Type | Gear with hub |
| Outside diameter (De) | 112 mm |
| Pitch diameter (Dp) | 96 mm |
| Hub outer diameter (d) | 56 mm |
| Pilot bore diameter (D) | 20 mm |
| Tooth width (h) | 80 mm |
| Overall hub height (A) | 110 mm |
| Weight | 4.5 kg |
| Material | C45E steel (UNI EN 10083-1) |
Frequently asked questions
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.
How does the operating temperature affect the choice of material for a module gear?
At high temperatures, C45E steel retains its properties much better than plastics, which can soften and lose tooth profile accuracy; in such cases steel (including stainless steel if moisture or steam is also present) is the safer choice.
What is backlash and why does it matter?
It is a small gap between mating teeth, necessary for lubrication and thermal tolerance; too little backlash leads to seizing and overheating, while too much leads to jerking and faster tooth wear.
What is the module of a gear and how do you measure it correctly?
The module (m) is the basic parameter defining tooth size, i.e. the ratio of the pitch diameter to the number of teeth. The simplest way to measure it in workshop conditions is to measure the outside diameter of the gear (Dz), count the teeth (Z) and use the formula: m = Dz / (Z + 2).
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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Weight4,5kg
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UPC Code5907009385501