Head to head
Avant 640 vs Keestrack Frontier K6
The Avant 640 is a articulated multi-purpose loader, 600 series. The Keestrack Frontier K6 is a tracked mobile screener.
Last reviewed 13 September 2026
Specifications side by side
| Avant 640 | Keestrack Frontier K6 | |
|---|---|---|
| Weight | 1590 kg | 29,5 t / 32,5 sT |
| Lifting capacity | 1100 kg | - |
| Lifting height | 2835 mm | - |
| Engine power | 28 kW (37,5 hp) | - |
| Capacity | - | up to 600 t |
| Screen box | - | 4500 x1800 mm / 15' x 6' (l x w) |
| Feed hopper in HB450 | - | 8,5 m3 / 10 yard3 |
| Engine | - | 79 kW/88 kW |
Sources: Avant 640, Keestrack Frontier K6. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the 640 if...
An all-round compact loader with stronger auxiliary hydraulics for running more attachments, used by landscapers, stables, estates and small contractors. Light enough to be moved on a trailer or larger van.
Full 640 specifications →Buy or hire the Frontier K6 if...
A tracked mobile screener used by quarries and recycling yards to grade crushed rock, topsoil or aggregate into different size fractions on site.
Full Frontier K6 specifications →Common questions
What is the difference between the Avant 640 and the Keestrack Frontier K6?
The Avant 640 is a articulated multi-purpose loader, 600 series; the Keestrack Frontier K6 is a tracked mobile screener.
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