SHS Pinion Gear — D-Type, AEG Motor
SHS Pinion Gear — D-Type, AEG Motor
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DETAILS
DETAILS
- description
The pinion is the first gear in the chain. It presses onto the motor shaft and drives the bevel, and everything the gearbox does afterwards depends on it meshing properly.
Pinions come in two profiles, named after the shape of the hole that fits over the shaft. This is the D, with a flat in it. The O is the fully round one, and the two do not swap.
A worn or badly seated pinion makes a noise long before it fails outright. Whining, grinding, or a motor that sounds busier than the gun is shooting all point in the same direction.
Specifications
| Specification | Detail |
|---|---|
| Part | Pinion gear |
| Profile | D-type |
| Fits | AEG motor shaft |
| Manufacturer | SHS |
| Sold as | Single pinion |
Good to know before you buy
Pinion height matters as much as the pinion does. Seated too high or too low it will chew the bevel gear, so set the motor height carefully after fitting and listen to it before the grip goes back on.
Frequently asked questions
How do I know whether I need a D or an O?
Look at the shaft on your motor, or at the hole in the pinion you are taking off. A flat on one side means a D. Fully round means an O.
Do I need a tool to fit it?
A pinion puller makes the job far easier and much less likely to end in a bent shaft. They can be driven on and off without one, but it is not a job to improvise on.
Will it fit any motor?
It fits AEG motors carrying a D-profile shaft. Shafts are reasonably standardised, but hold the old pinion against this one before fitting.