SHS Pinion Gear — O-Type, AEG Motor
SHS Pinion Gear — O-Type, AEG Motor
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DETAILS
DETAILS
- description
This is the O-profile pinion: a plain round bore that presses onto a motor shaft with no flat machined into it.
It does exactly what the D does, taking drive off the motor and handing it to the bevel gear. The only thing separating the two is how they grip the shaft.
Because a round bore has nothing to key against, an O pinion relies on an interference fit. Fitted carelessly it can spin on the shaft, which feels precisely like a dead motor without being one.
Specifications
| Specification | Detail |
|---|---|
| Part | Pinion gear |
| Profile | O-type |
| Fits | AEG motor shaft |
| Manufacturer | SHS |
| Sold as | Single pinion |
Good to know before you buy
A pinion turning freely on its shaft is easy to misdiagnose. The motor runs, nothing moves, and the natural assumption is that the motor has died.
Frequently asked questions
What is the difference between O and D?
The bore. An O is fully round; a D carries a flat matching a flat on the shaft. Take the old one off and look at it.
Can I use an O pinion on a D shaft?
It will go on, but it has nothing to locate against and can slip under load. Use the profile the shaft was cut for.
How tight should it be?
Tight enough that it cannot move on the shaft. That normally means pressing it on rather than tapping it, and a pinion tool is the sensible way to go about it.