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Stalpen – Mechanical Tree Felling Jack
Stalpen is a highly reliable Tree Felling Jack that gives you full control over the direction of fall and withstands high forces, even in cases of overhang, wind, or improper lean.
When is a Tree Felling Jack used?
A Tree Felling Jack is indispensable for anyone working in forestry or for those who need to fell trees for other reasons. With our Tree Felling Jack, you can safely guide a tree to fall even against its natural direction of lean. Stalpen is designed to withstand high forces, including overhang, wind gusts, and improper lean. Its highly reliable mechanism does not rely on wire rope, nylon straps, or similar drive systems, minimizing the risk of tangling and material wear.
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3 reasons to choose Stalpen
Working in forestry demands the highest level of safety, and Stalpen is developed to safely fell even the most challenging trees.
Safe
The unique disengaging function in the safety crank allows cranking in both directions under full load without manual adjustment of the ratchet. It prevents kickback even if the handle is released.
Reliable
The mechanical rack-and-pinion design reduces the risk of tangling associated with straps or wire systems. All components are backward compatible and easily replaceable, ensuring dependable operation for many years with minimal maintenance.
Efficient
With a lifting capacity 17 times greater than the applied crank force and a recommended maximum load of 2600 kg, Stalpen provides a strong safety margin when dealing with overhanging crowns, improper tree lean, and sudden gusts of wind.
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Technical specifications
Maximum recommended lifting capacity: 2600 kg
Maximum recommended crank force: 150 kg
Gear ratio: 17×
Stroke length: 63 cm
Split construction with quick coupling
Total length, assembled and retracted: approx. 2 m (1 metre per section)
Transport length: approx. 1 m
Weight: 14.5 kg (lower section 3.7 kg, upper section 10.8 kg)
All components are backward compatible and replaceable
Stable base that does not catch in root systems
Easy maintenance with two grease nipples
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Reliable construction for many years of use
Stalpen is designed to withstand many years of use. However, like most products, it will wear over time and certain parts may need to be replaced. That is why all components manufactured for and used in Stalpen are backward compatible, allowing them to be replaced if needed. You can feel confident that Stalpen is a tool built to last for many years with minimal maintenance.