- Zirkon 7/300 (for tractors up to 140hp)
- Zirkon 9/300 (for tractors up to 200hp)

The ultimate power harrow range – precision engineering, robust design, low operational costs and high hectare performance. Ideally suited for the large-scale farmer and contractor. Can be used in conjunction with Solitair pneumatic seed drill.

 RIGID, HEAVY DUTY GEAR TROUGH PROVIDES SMOOTH RUNNING EFFICIENCY

The heart of the Zirkon power harrow is the gear trough with it's advanced design. Heavy gauge steel is used to form the monocoque trough in which large capacity bearing housings are welded. These are precisely bored on a CNC machine to ensure parallel alignment of rotors and highly accurate tolerances between the gears.

Each rotor is manufactured from a one-piece forging and mounted on heavy-duty bearings, which are sealed on both sides to retain lubricant and prevent the ingress of foreign material.

The distortion free trough ensures the shafts and gears locate precisely thereby providing effortless smooth running and a long working life. The transmission is clutch protected and carries a two-year warranty.

BLADES: RESISTANT TO WEAR AND EASY TO DRIVE

The Zirkon blades are strategically shaped inwards to provide the maximum amount of cultivation with the minimum horsepower requirement and wear.

 Reduced fuel consumption.
 Sequential positioning reduces transmission shock loads.
 Design allows stones and rocks to pass through problem-free.
 Long working life.

A special hardening process ensures the blades are sufficiently hard to reduce wear but tough enough to prevent breakage. Blades with hard facing in the critical wear areas are available and provide an exceptionally long working life with the added advantage of reduced downtime.

Large diameter high tensile bolts secure the blades onto round rotor flanges and forged threaded blocks are used in preference to nuts. The bolt heads are easily accessible for speedy replacement.

SMOOTH AND QUIET OPERATION, RESULTING FROM PRECISION ENGINEERING AND SEQUENTIAL BLADE MOUNTING

All Zirkon models feature the optimum 4-rotors per metre. This provides the ideal balance between horsepower requirement, blade rotation speed, blade wear, work rate and tilth required.

The blades are mounted sequentially which ensures a consistent load on the transmission. This prevents side to side movement of the machine when working in tough conditions and also protects a combination drill from excess vibration.

ROBUST, HIGH CAPACITY MULTI-SPEED GEARBOX

The Zirkon gearboxes are engineered to transmit high horsepower smoothly, reliably and efficiently.

All components are heat-treated, in addition the shafts and gears are surface hardened. A wide choice of gear ratios are available to match rotor speeds to the horsepower available and the seedbed tilth required.

The gearbox casing is a heavy-duty casting with cooling ribs. These increase the casings surface area and assist in dispelling the heat thereby controlling the temperature of the lubricant.

The transmission is protected by a highly efficient clutch which is fitted to the PTO drive shaft. For smooth transmission of power and extended PTO life the gearbox input shaft is positioned centrally on the machine.

ZIRKON HEADSTOCK: ATTENTION TO DETAIL

The headstock is designed with mounting positions for a rear 'A' frame or hydraulic linkage to carry a combination seed drill, it also has an integrated toolbox.

The one-piece drawbar is manufactured from high-grade spring steel which allows a degree of flexing thereby absorbing shock loads in work and transport. This is mounted to adjustable lower link arms, which enables the power harrow to be correctly positioned close to the rear of the tractor.

OPTIMUM LEVELLING

Consistently level seedbeds are achieved with the unique Zirkon rear-levelling bar. A front mounted levelling bar is available as an option.

The rear roller mounting allows the power harrow to raise up, over buried obstacles without lifting the entire weight of the pack roller.

The roller frame also carries the rear-levelling bar and this system produces a consistently level surface finish even in difficult conditions.

The levelling bar is multi-adjustable and equipped with lifting handles for ease of adjustment.

The grading angle of the bar is designed to push surface stones into the tilth whilst carrying sufficient soil to level the seedbed prior to the roller.

SIMPLE, VERSATILE ROLLER ADJUSTMENT

The required cultivation depth is easily achieved with the simple pin adjustment.

These pins may be set to rigidly hold the roller or alternatively to provide a degree of float between the harrow and roller which is ideal in stony conditions.

The roller position in relation to the power harrow is also adjustable.

This adjustment is beneficial when used in combination.

HEAVY GAUGE MULTI-FUNCTIONAL SIDE GUARDS

Whilst offering safety protection these vertically adjustable side guards minimise the over-spill of soil between cultivation passes.

They also raise up allowing large stones and rocks to pass out of the cultivating chamber. When raised up onto the trough the 3-metre Zirkon power harrows are within the 3 metre overall width, required for transport.



Specifications

 

Options
Cage Roller
Packer Roller
 
Zirkon 10 Series (rigid) suitable for tractors up to 230 horsepower

The versatile power harrow with changing rotational direction of the tines.

The most important Lemken practical advantages:

TROUGH

- Rigid one-piece trough made out of thick walled (7mm) steel
- Great length
- Long working life
- Upper and lower bearing housing are machined in "one position" on a CNC machining centre
- Absolutely precise bearing position for shafts and gear wheels
- All gear wheels, shafts and bearings easy running and quiet

ROTOR SHAFT AND TINE CARRIER

- Forged and heat treated

- Extremely durable

Blade carriers in synchronize configuration

- Continous action, one after the other, of the tines
- No shaking of power harrow, extremely quiet running

TINES

- Inward pointing and drag position

- Less draught demanding, passing stones without problem      

- Specially hardened, also available as hard-faced version

- Break resistant, very tough, wear areas exceptionally hard

TINES WITH A QUICK CHANGE SYSTEM

-  Only a single pin securing each pair of tines
- Rapid no-toll tine replacement
- Attachment parts situated beneath tine carrier
- Enormous clearance together with plain underside of the trough prevents jamming of stones
- Tines 340mm long and 20mm thick
- Long working life
 

DUAL-SHIFT GEAR

- Changes tine rotation direction by moving the gear between two stops.
- The same tines give grade or drag setting.
- Always the correct tine setting to suit cultivation system or field conditions.
- Smooth running power harrow protects gearbox and PTO shaft.

- Rotor rpm adjustable via the change speed gear

- Simple adjustment of rpm
Optimum rotor speed selectable for all field conditions

Oil cooling ribbing on gearbox

- Good heat reduction, efficient oil temperature
- Reliable lubrication of all gearbox parts always guaranteed

Specifications

Zirkon 10K Series suitable for tractors up to 320 horsepower

The hydraulically folding power harrow for large areas.

FRAME

Two power harrow sections are fitted to centrally positioned pivot axles

  - Ideal soil adaption on uneven and hilly conditions
  - Possibility of passing stones or other obstacles

Pivot suspension for shallow work

  - Reduced power requirement
  - Saving in fuel consumption
  - Reduced wear of tines

Central position of the pivot axles in front of each working section

- Controlled guiding
- Depth wheels are not required

Close mounting of the power harrow to the tractor

- Favourable centre of gravity
- Folding in of the two working sections for transport by means of two double acting hydraulic rams to a transport width less than 3.0m, including an automatic locking device
- Quick and simple conversion from working to transport position
- An additional transport trailer is not required