Kivi-Pekka 7 — stone collector with Flex Drum
Kivi-Pekka · 7 m stone collector with Flex Drum as standard — stones Ø 3.5–50 cm

Kivi-Pekka 7

7 m stone collector with Flex Drum as standard — stones Ø 3.5–50 cm

7 m stone collector with Flex Drum as standard — stones Ø 3.5–50 cm

Kivi-Pekka 7

7 m stone collector with Flex Drum as standard — stones Ø 3.5–50 cm

The Kivi-Pekka 7 is the flagship stone collector of the Finnish brand, with Flex Drum as standard. The flexible drum picks up stones 3.5–50 cm in diameter, letting soil and fine material pass through, and its hydraulic pressure accumulator allows it to “ride over” a large stone without stopping. At a 7 m working width, capacity reaches 1400 kg/min, and the 5 m³ hopper with hydraulic unloading up to 2.9 m reduces the number of passes. The machine is based on three-stage soil separation, is equipped with hydraulic rotor lifting and performs well on post-glacial fields and in contracting work.

Engineering

How Kivi-Pekka separates stones from soil

Kivi-Pekka harvesters rely on three-stage soil separation and the optional Flex Drum (standard on model 7).

01
How the mechanism works

Three-stage soil separation

The machine lifts the topsoil and separates stones from earth in three stages. (1) Stones pass onto a screen placed beneath the lifting drum; (2) they go into the hopper, while the sifted soil returns to the field; (3) the remaining soil is collected by a separate container behind the rear wall of the hopper and released at the moment of unloading. As a result, only stones end up in the hopper, and the valuable topsoil stays in the field.

Source: Kivi-Pekka Catalogue 2025 (English edition), p. 3 (“Soil collecting in three stages”)

02
Design decisions

Flex Drum — flexible drum for large stones

The lifting drum's drive runs along its frame, so the entire drum can move upwards. A hydraulic pressure accumulator allows the Flex Drum to “pass over” large stones instead of becoming blocked by them, while the suspension protects the screen and tines. The standard range of 2.5–35 cm extends to Ø 50 cm. The drum can also be raised from the cab to release a jammed stone, without leaving the tractor. The Flex Drum is available on models 5 and 6 (optional) and comes as standard on model 7.

Source: Kivi-Pekka Catalogue 2025 (English edition), p. 4 (“Flex Drum lifts heavy stones”, “Extra strong tines”)

03
Operation in practice

Tank capacity and discharge height

A larger tank means fewer stops for emptying. Model 5 has 3 m³ and a capacity of up to 1000 kg/min; model 7 has 5 m³ and up to 1400 kg/min. On models 4–7, the hydraulic discharge reaches 2.9 m, so stones go directly into a trailer with sides up to 2700 mm or into a lorry, without being unloaded onto the ground first.

Source: Kivi-Pekka Catalogue 2025 (English edition), p. 3 (“Tipping height ... up to 2.9 meters”)

04
Optional automation

ISOBUS package — ultrasonic sensor and rotor protection

The ISOBUS version measures the working depth with an ultrasonic sensor and maintains it automatically. In the event of a jam, the machine relieves the rotors by itself and raises the Flex Drum, then returns to work once the blockage clears. At the headland, a single button is enough: the automation lifts the machine and stops distribution. The package is available only in versions with the Flex Drum.

Source: Kivi-Pekka Catalogue 2025 (English edition), p. 4 (“Automation package with ISOBUS”)

05
Typical customer

Glacial soils

Farms on glacial soils, where stones “come up” out of the ground after every winter and damage seed drills, combines and tyres. Model 3.3 is for narrow specialist crops and landscape management (tractor from 60 hp), model 4 is an economical entry point (from 70 hp), model 5 suits medium-sized areas (from 80 hp), and model 7 is for large areas and contract services (from 100 hp).

Comparison

Kivi-Pekka 5 vs Kivi-Pekka 7

Two stone collectors from the same three-stage soil separation — they differ in working width, hopper capacity and standard drum equipment.

Kivi-Pekka 5
Working width
5 m
Stone diameter
Ø 2.5–35 cm (Flex Drum option → Ø 50 cm)
Capacity
up to 1,000 kg/min
Hopper capacity
3 m³
Weight
5300 kg
Drum teeth
28
Minimum tractor power
od 80 KM
Hydraulic flow rate
20 l/min
Kivi-Pekka 7
Working width
7 m
Stone diameter
Ø 3.5–50 cm (Flex Drum as standard)
Capacity
up to 1,400 kg/min
Hopper capacity
5 m³
Weight
6540 kg
Drum teeth
33 (13×50 mm)
Minimum tractor power
od 100 KM
Hydraulic flow rate
20 l/min

Source: Kivi-Pekka catalogue 2025 (English edition), p. 5 (TECHNICAL DATA)

Technical data

Kivi-Pekka 7 — specyfikacja

Working width
7 m
Collection system
Flex Drum as standard
Stone diameter
Ø 3,5–50 cm
Capacity
up to 1,400 kg/min
Hopper capacity
5 m³
Weight
6540 kg
Discharge height
up to 290 cm (hydraulic)
Drum teeth
33 pieces, 13×50 mm (Flex Drum, with auxiliary springs)
Tyres
560/60×22.5 with tandem (bogie)
Working speed
1–6 km/h
Power requirement
od 100 KM
Hydraulic flow rate
20 l/min
Other models from the manufacturer

Explore the whole Kivi-Pekka family

This model is part of the Kivi-Pekka manufacturer's range. The other machines address the next stages of the same technology.

Gallery

Kivi-Pekka 7 on each side

Kadr 0101 / 03

Before you decide

Conversation with an engineer.

The most common questions we hear from farms before purchase.

We have collected the questions we most often hear from farms before purchase — and the answers from our engineers. Every answer is based on verified knowledge of the machine.

Based on
  • manufacturer's materials
  • dokumentacji technicznej
  • questions asked by farms

Answers based on the experience of thousands of farms in Europe.

An engineer answers

The ultrasonic sensor maintains working depth, and on blockage the system automatically relieves the rotors and lifts the Flex Drum — after the blockage clears, it returns to work. At the headland, one button lifts the machine and stops discharge.

An engineer answers

From Ø 3.5 to 50 cm — thanks to the Flex Drum as standard. Stones smaller than 3.5 cm pass through with the soil and return to the field.

An engineer answers

Up to 1400 kg/min; 5 m³ hopper with hydraulic unloading up to 2.9 m (can be loaded directly into a tipper lorry).

An engineer answers

From 100 hp, hydraulic flow 20 l/min, PTO. The machine weighs 6540 kg.

Have another question?Talk to an engineer
Next step

Kivi-Pekka 7

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