Adjustable base jack — hollow spindle
32, 34 or 38 mm hollow spindle · lighter to handle, failure about 150 kN. The adjustable foot that takes a scaffold off uneven ground and back to level. Ground in this market is rarely flat and almost never level, which is why the jack is not an optional extra.
Published price
Adjustable base jack — hollow spindle
Quoted on the day
Priced against spindle length, solid or hollow, and base plate size.
One message, no form — we reply with the price.
Prices exclude 5% VAT and are subject to change. Bulk discounts available.
Delivered across all 7 Emirates. How delivery works
This size
32, 34 or 38 mm hollow spindle · lighter to handle, failure about 150 kN
Specification
- What it is
- A threaded spindle on a welded base plate, with a winged nut that raises or lowers the standard sitting on it. A U-head is the same jack with a forked head instead of a plate, for carrying a beam.
- Spindle lengths
- 100 · 200 · 300 · 400 · 500 · 600 · 750 mm
- Adjustment
- About 40 – 450 mm on a 600 mm jack
- Spindle
- Solid OD 26 – 48 mm · hollow 32, 34 and 38 mm
- Base plate
- 150 × 150 mm standard, 5 – 8 mm thick. EN 74 §5.2.3 and EN 12811-1 §5.7.1 both set the end plate at not less than 150 cm² with a minimum width of 120 mm — two separate requirements. A square 120 × 120 plate is only 144 cm² and does not meet the area rule, so where a specification names either standard we quote 150 × 150. EN 12811-1 also asks for at least 6 mm on a base jack end plate.
- Load
- About 100 kN, and failure about 150 kN on a 32–38 mm hollow spindle — both are manufacturers' tested figures. Neither EN 74 nor EN 12811-1 states a load for a base jack; they set the geometry (plate area and thickness, overlap, spindle tilt) and leave capacity to the maker's test and the scaffold design. Ask for the test report with the quotation.
- Standards
- EN 74 §5.2.3 for the base plate · EN 12811-1 §5.7 for the jack — minimum overlap 25% of the shaft or 150 mm, whichever is greater, and spindle tilt not more than 2.5% unloaded · BS 1139-2.2
- Finish
- Hot-dip galvanised · painted on request
Not the right size?
Every option in the Base Jacks & U-Heads range. Tell us the quantity and all of them are quoted together.
- Adjustable base jack — 400 mm
- Adjustable base jack — 600 mm
- Adjustable base jack — 750 mm
- U-head jack — 600 mm
- Swivel base jack
- Fixed base plate 150 × 150 mm
Technical Procurement & Ordering Guides
10 drawings covering every answer we need to price Base Jacks & U-Heads — every figure comes from the price table above or from the published standard it is made to.
Base jackGetting level
1 of 10
Send us the size, wall and length — or send the drawing and we will read it off.
Adjustable base jack — hollow spindle — questions we get asked
Anything not covered here, ask on WhatsApp — you will get a person, not a form reply.