Bottle jacks

The minimum height to the trailer jacking point on Series IV trailers with no air in the tyres is approximately 250mm and with air in the tyres is 395. The below link is to a SCA 8000kg bottle jack that can be purchased from Super Cheap Auto.

https://www.supercheapauto.com.au/p/sca-sca-hydraulic-bottle-jack-8000kg/382377.html#q=bottle%2Bjack&lang=en_AU&start=1

The specifications for this jack are:

Working load limit: 8000kg

Height lowered: 238mm

Height raised: 478mm