Axle Dimensions
| Dimension | Name | Description |
| TT | Tip to Tip | Total length of axle from end to end |
| FF | Face to Face | Distance from one wheel face to the other (track width) |
| CW | Chasis Width | Distance between outside of chasis rails |
| CF | Chasis to Face | Distance from ourside of chasis rail to wheel face |
| TC | Tyre Clearance | Distance between outside of chasis rail to inside wall of tyre |
| AS | Axle Section | Steel section of axle (45 square, 50 rounds, etc) |
| TW | Tread Width | Tread width of tyre |
| BS | Back Space | Distance from inside tyre wall to wheel face |
Axle Selection
Before selecting an axle, you will need to decide on the following:
- Trailer ATM / GTM
- Single or Tandem axle
- Choice of brake type
- Type size and stud pattern
Based on this information, Huntsman Products will recommend a minimum axle section, hub / disc / drum size, bearing size and axle length for your trailer.
AXLE LENGTH (FACE TO FACE)
FF = CW + (2 x TC) + (2 x BS)
where
TC is minimum 45 mm
BS is measured or calculated from tyre size
Example:
For a CW of 1200mm, Tyre size 205/75R15 (no offset),
FF = 1200 + (2 x 45) + (205) = 1495mm
