Sagroparts offers a wide range of various types of power transmission axles and parts for tractors and other machinery. We have everything from standard axles to wide angle power axles, shear bolt coupling, freewheel coupling, friction clutch, and plate clutch. We also have various spline axles, adapters, and sleeves.
Which Power Transmission Axle Should I Choose?
1. Horsepower
There are several factors to consider when choosing a power axle.
The first thing to keep in mind is how many horsepower the tractor has,
or alternatively how much power the implement requires.
An axle that can handle the tractor's horsepower is usually recommended, as this is not limited to the implement.
2. Size of Spline Axles
Check the size of the spline axles on both the tractor and implement.
The most common sizes are 1 3/8" (approx. 35mm outer diameter) and 1 3/4" (approx. 44.5mm outer diameter).
3. Wide Angle or Standard?
Standard axles generally should not have an angle larger than 5° during operation.
If the implement requires over 5° in angle, then you need a wide angle power axle.
An axle with a wide angle can usually handle up to 25° of angling during operation.
4. Do I Need a Shear Bolt or Other Safety Coupling?
This entirely depends on which implements you intend to use the power axle for.
Different safety couplings have different uses and advantages.
If it's an implement where there is a risk of something getting stuck or otherwise affecting the drive, then you should choose an axle with a safety coupling.
An example could be a snowblower, where a larger stone or similar gets stuck in the augur, completely stopping the drive.
In this case, you should choose an axle with a shear bolt. When the stone enters the augur and stops the drive of the blower, the shear bolt on the power axle breaks.
This allows the axle to spin freely without breaking. Then you simply replace the shear bolt, which is much cheaper than a new axle!
5. Length
The length of the axle you need is determined by the distance required between the tractor and the implement.
As the axles are telescopic, there is always some play, but what you need to consider is that the inner and outer parts of the axle must overlap at least 2 thirds of the length in the extended position.
If you extend the axle further, it weakens the force it can handle and risks breaking.r />You can also cut the profile tubes to the desired length. We usually recommend cutting both profile tubes at the outer ends.
If you cut the inner ends, you risk getting burrs on the profile tubes which may cause the axle to jam when reassembling it.
