Harvester heads

Outokummun Metalli Oy is the world’s largest manufacturer of harvester head frames with more than 10,000 harvester heads already under our belt. We are part of the global forestry machine business through our partner John Deere Forestry.

In Outokumpu the frames of harvester heads are completed mechanically, including welding, machining, painting and assembly. John Deere Forestry Oy is responsible for product sales and Waratah OM Oy functions as a link between the two companies, responsible for the product development, product support and final assembly of the harvester heads.

We currently manufacture nine different harvester head models and perform continuous development work in order to improve the efficiency and quality of our harvester head production. We, naturally, also manufacture spare parts for the harvester head frames of both current and older models.

Take a look at John Deere’s harvester head range here.


Vahva grappleskahmarit-logo

Outokummun Metalli manufactures more than 20 grapple models at its plant in Outokumpu. The structure and production technology of the Vahva loader grapples has been significantly revamped during 2014–2016. The new grapples based on the so-called C-frame reflect our strong production experience and quality know-how, including:

  • Robotically welded frames and jaws
  • Machined peg lines
  • Cylinders made in-house
  • Hardened and ground, dimensionally precise pivot pins with welded locking plates
  • Powder coating

The conventional, rotator-operated Vahva grapples are suitable for handling roundwood, logging waste, stumps as well as recycled materials. In addition, the grapples are tailor-made for excavators, which means that they can be used, in addition to wood handling, for a broad range of applications from pipeline projects to building demolition. Vahva grapples are sold by Koneosapalvelu.

Read more about Vahva grapples

Vahva Forti mechanical rototiltforti-logo

The Vahva Forti 200 mechanical rototilt is a new excavator accessory combining bucket tilt and rotation. Vahva Forti hydraulically tilts the bucket 45 degrees both ways and allows mechanical bucket rotation. For the coupling, a conical disc is welded directly to the bucket or an NTP 10 adapter is used. Forti couples with the bucket by a collar that engages with the conical disc on the bucket when tightened by the grabber. The locking mechanism based on the conical disc and the pole grapple is a patented solution. The product is suitable for 13- to 20-tonne excavators.

Vahva Forti is structurally simpler and less susceptible to damage than hydraulic rototilts – and, of course, costs less. Unlike traditional hydraulic tiltrotators, Vahva Forti does not have a gear transmission, hydraulic motors, hydraulic valves, or electric parts. Thanks to the low profile of the structure, there is no loss in the digging force of the bucket. During work, the clearance-free coupling of the bucket and Forti makes the structure durable and more convenient for the operator.

Vahva Forti 200 is Outokummun Metalli’s own product manufactured at the Outokumpu plant. Vahva Forti is sold by Koneosapalvelu Oy and selected distributors.

Read more about Vahva Forti