Selecting a sliding gate wheel can be difficult there are 2 types U groove and V groove wheels 1. Internal 2. External - Internal means that most of the wheels are housed inside the bottom rail whereas with the external gate wheel you can see all of the wheels. I have illustrated the required steel to use for the bottom rail after you select whether you need U or V groove wheels. Go ahead and select the wheel of your choice.
difference between a
Single and Double bearing wheel
Range of V groove internal Wheels
WH479 - Sliding Gate Wheel V Groove 80mm Internal Double Bearing | Sliding Gate Wheels
WH477 - Sliding Gate Wheel V Groove 80mm Internal Single Bearing | Sliding Gate Wheels
WH481 - Sliding Gate Wheel V Groove 90mm Internal Single Bearing | Sliding Gate Wheels
V TRACK EXTERNAL SLIDING GATE WHEELS
SLIDING GATE WHEEL V GROOVE NO BRACKET
SLIDING GATE WHEEL V GROOVE NO BRACKET
There's only one type of V Wheel left today, In the years gone by there were 5 types we use to make the running track out of Angle steel with welded lugs every 500mm, the U shape is now popular.