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TP-Feed rollers are made ​​of 10-15mm Hardox steel by laser cutting. TP-Rollers have the advantages of modularity, changeable discs, which are resistant to abrasion, symmetric spike that ensures a good grip on both forward and backward feeding. Despite the high grip, the rollers do not damage the tree, because the rollers have anti-sag on the spike. 


1. Manufacturing by laser cutting of Hardox 600 material, plate thickness 10-15mm.
2. Hardox by SSAB (A Swedish leading steel) is an extremely hard steel wear plate. Yield strength 1650-2000 N/mm2 (ordinary structural steel 335-520 N/mm2, M16 bolt 10.9).
3. Supporting cases by automatic machinery. 
4. Supporting cases bear the structural forces while the bolts keep the roller in form.
5. Reliable, overdimensioned multi-bolt assembly: 8-10 bolts, M14/ strength 12.9.
6. Excellent grip due to numerous sharp spikes.
7. Steep spike angle: Roller sticks to timber with lower pressure.
8. Great reversing properties on the grab, the symmetrical structure of the spike.
9. The sinkage limiter prevents the spikes from sinking too deep into the wood.
10. A damaged roller part is easy to move to farther back or change to a new one if necessary.
11. The roller’s cleaner keeps the roller clean at all times, grip is maintained.
12. Mass processing qualities found great as well.
13. In conclusion the finished product is a roller with good operating characteristics.
14. Utility patent pending.
15. After-sales service will be arranged.
16. To guarantee the quality:
17. The two (2) year or 4000 hour warranty covers failures and defects in structure and materials.



TP-Wrench & TP-Head are made of 10-15mm Hardox steel by laser cutting. They are available in sizes 19-50mm

Photo gallery (click picture to enlarge)

As an promise of quality we now offer 6000 hours / 3 years warranty for TP-feedrollers. 

Warranty covers structure materials and normal wear and tear.

Warranty does not cover breaking caused by roller hitting rocks or tracks etc.

Roller bolt tightness must be checked after first 8 hours of use (300Nm)




Welcome to TP-Roller's homepage

In this site, you will find info about TP-Rollers and other TP-products, contact details and photos.


TP-Rollers sales




Timo Penttimies & Uittokalusto OY



Other nordic countries, Germany, Poland, Slovakia, Switzerland, Austria, Hungary, Bosnia-Herzegovina

GRUBE KG Germany and their local retailers



Great Britain, Ireland, Baltic countries, France, Czech Republic, Romania, Belgium

John Deere Forestry and their local retailers



Background on the Feeding Rollers

Around 2006–2007 I started to get the feeling that the rollers I was using were somehow defected as the grab wasn’t reversing timber properly. A thought was simmering on my mind: using sprocket chains to build some kind of pack that would serve as a feeding roller in my harvester’s grab.

I let the idea incubate in the background, but decided to have laser cut symmetrical spikes done to replace the conventional involute spikes. The grip on the roller was significantly better than with the short spiked iron rollers I had had before, and reversing had improved as well. I narrowed down the tips of the spikes, which helped the rollers stay somewhat cleaner.

I told a good associate of mine about the matter of spiked discs and them likely getting clogged up. He responded right away that there should be some kind of cleaner in the rollers. He sure knew what he was talking about. The first spikes were very sharp and sank really deep into the timber. However, the grip was tremendous, which encouraged me to further develop the roller. By both improving on blocking the sinkage and increasing the number of spikes the excessive sinkage of the rollers into the timber has been gotten under control while maintaining sufficient grip.

I have subsequently performed testing on several different possible structural solutions. The latest of them crossed my mind in one late February afternoon: the collapsible structure of bolted joint, which had been occupying my mind several times before. The sleeves/casing in-between make the structure robust and ensure that both dismantling and re-assembling the roller during maintenance is easy.

I have been fortunate to get open-minded and excellent cooperation partners and test users as well as laser cutting and machining businesses that have helped with manufacturing the various parts of the roller.

Without the honest positive and negative feedback from the users there’s no way I would have been able to develop the rollers to their present working condition.

Thank You for all the input that helped me develop the rollers. I hope dearly the collaboration will continue in the future as well.


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