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OPICO Grass Harrow behind a Valtra tractor

GRASS HARROW

OPICO Grass Harrow Transport Width Icon

The OPICO grass harrowing concept simply transforms the way you work your grass. The angle of the tine combined with the overall design of the harrow makes it ideal for stimulating new grass or renovating old pastures.

With an OPICO Grass Harrow, leys can be re-vitalised and dry matter yields boosted. You can attach an OPICO Air Seeder, and oversow old worn leys to boost grass and clover content, or start afresh and put down a brand new ley with the harrow and seeder combination.

The OPICO Grass Harrow covers every inch of the ground, thanks to its unique contour flexing tine bed. It clears moss, opens the surface, improves aeration and encourages growth. Like all good ideas it is very simple and is now recommended by thousands of farmers who have switched to this common-sense approach to what used to be a ‘harrowing’ job.

OPICO Grass Harrow working width icon, 1.5m - 27m
FEATURES & BENEFITS

The OPICO Grass Harrow has revolutionised grass harrowing in recent years, with larger working widths, more adjustment and aggressive spring tines mean that a better job can be achieved faster and at a lower cost.

With typical working speeds of 4.5mph to 7mph the Grass Harrow is a high capacity machine, a 6m for example, is more than capable of covering over 100 acres in a normal working day. The working widths range from a very handy 1.5m up to the very wide 27m. There are rigid, mechanical and hydraulic folding units with a choice of 7mm or 8mm tines.

The machines are designed for strength without the need for high horsepower and are equipped with a fully adjustable depth wheel, which works alongside the tine angle settings for maximum effectiveness. The hydraulic folding models have a single acting ram with an accumulator that applies 8-10 bar pressure over the full width of the harrow to give true contour following across the field.


 

Ultimate contour following ability for uneven ground

Grass harrow contour following
  • Even pressure is applied across every inch of the working width.
  • The frame adapts to the ground contours with additional pressure being supplied from the accumulator to even the harrowing pressure across the working width.
  • Active harrow bed suspension on the implement frame.
  • A flexible harrow bed adapts to ground undulations.

Flexible bed

Grass harrow flexible bed

The flexible design of the tine beds allow them to follow the contours of the land ensuring effective coverage and even tine pressure. Each 1.5m bed has 48 tines spaced at 30mm centres apart and as well as ensuring good tine pressure onto the ground, this design allows it to self-clean as it moves through the sward. 


 

Spring tines

Grass harrow spring tines

The Grass Harrow's spring tines are able to penetrate even the hardest of ground, ripping out dead thatch and opening up the soil surface allowing air in to the root zone to stimulate and encourage growth. The oil hardened spring wire has three times the service life of a normal sprung steel wire. Channel mounting of tine coil prevents damage to the growing tip and leaf of the grass. 

Adjustable tine angle

Grass harrow tine adjustment

Quick and simple tine angle and pressure adjustment, ground conditions will determine how aggressive tine pressure needs to be for effective harrowing. On the OPICO Grass Harrow there are 10 tine angle settings so pressure can be altered, ensuring the vibrating action of the triple coil spring tine can be maximised. 


 

Construction

Grass harrow frame

The construction of the headstock consists of interlocking pieces of steel so the Grass Harrow doesn’t just rely on the welding for strength. The frames and beds are powder-coated and most of the other steel parts are anodised so your harrow will stay in good working order and looking newer for longer.

Hydraulic cylinder with accumulator and hydraulic shut-off valve can be locked for safe road transport.

Folding system

Grass harrow folding system

When in transport position, the hydraulic folding models fold up between 2.5m and 3m dependant on the model of grass harrow. This allows easy transportation on the road and through narrow gateways. 


 

7mm or 8mm Tines, that is the question?

Many farmers automatically believe that the 8mm tine will do a better job because it is stronger. That's not necessarily the case! The key to making the best job with your harrow is getting the tines to do the work.

A spring tine is designed to "spring" causing the point to oscillate from side to side. On a Grass Harrow this makes sure all the ground is covered by the tines and achieves the maximum effect from one pass.

In many cases the 8mm tine can be too rigid and simply drag through the sward in a straight line with no "spring" effect. As a general rule of thumb choose the 7mm tine when you are predominantly working on temporary grassland (leys under 5 years) which is being regularly cut for silage, grazed and managed.

Choose an 8mm tine when you are using the harrow on old permanent pastures and rough grazing in the main.

GRASS HARROW MODELS

1.5m - 3.0m Non-Folding Grass Harrows

The rigid, non-folding Grass Harrows consist of 3 models, 1.5m, 2m and the larger model at 3m wide.

NOTE: 1.5m, 2.0m and 3m units supplied with Cat I Pins unless specified with order

 

Model No. Working Width Weight Transport Height Transport Width HP
1737010 1.5m 145kg 1.45m 2.0m 10
1737011 2.0m 165kg 1.45m 2.0m 13
1737012 3.0m 260kg 1.45m 3.0m 15

Options & Accessories

Part No. Description
179353 Front levelling board 1.5m
179354 Front levelling board 2m
179359 Pair support wheels
179336 1.5m section complete with 7mm tines
179338 2.0m section complete with 7mm tines
1793051 1.5m section complete with 8mm tines
179308 2.0m section complete with 8mm tines
1 tine-Ext 1 set, 1-tine extension kit 7mm
1 tine-Ext 1 set, 1-tine extension kit 8mm
1793551 Hydraulic tine adjustment (per section)
17941811 Fence protector - (Left)
17941812  Fence protector - (Right

*Weight and HP based on harrows with 7mm tines

4.5m - 8.0m Hydraulic-Folding Grass Harrows

The hydraulic-folding models consist of 7 widths, 4.5m, 5m, two 6m versions, 6.4m, 7.5m and 8m.

The 6m comes in two different formats, one unit has 3x2m sections the other has 4x1.5m sections. The 3 section unit is able to fold down to 2.5m for transport which enables easier movement through narrow gateways and down the road. On the other hand the 4 section unit folds to 3m for transport but has improved contour following ability in the field.

 

Model No. Working Width Weight Transport Height Transport Width HP
1738022 4.5m 390kg 1.45m 2.5m 20
1738032 5.0m 440kg 1.70m 2.5m 25
1739042 6.0m 530kg 2.20m 3.0m 40
1739044 6.0m 520kg 2.20m 2.5m 40
1738043 6.4m 550kg 2.60m 3.0m 40
1738052

7.5m

710kg 3.15m 2.8m 50
1738062 8.0m 740kg 3.25m 2.8m 55

 

Options & Accessories

Part No. Description
179353 Front levelling board 1.5m
179354 Front levelling board 2m
179359 Pair support wheels
179336 1.5m section complete with 7mm tines
179338 2.0m section complete with 7mm tines
1793051 1.5m section complete with 8mm tines
179308 2.0m section complete with 8mm tines
1 tine-Ext 1 set, 1-tine extension kit 7mm
1 tine-Ext 1 set, 1-tine extension kit 8mm
1793551 Hydraulic tine adjustment (per section)
17941811 Fence protector - (Left)
17941812  Fence protector - (Right

*Weight and HP based on harrows with 7mm tines

9.0m - 12.4m Scissor-Folding Grass Harrows

The 9m, 10.5m, 12m and 12.4m uses a hydraulic scissor-folding mechanism to keep this wider range of machines to a transport width of or under 3m.

Grass Seeder for illustration purposes only and does not come as standard with the scissor-folding Grass Harrow. Please see our Grass Seeder page for more information.

Model No. Working Width Weight Transport Height Transport Width HP
1738073 9.0m 1010kg 2.75m 2.8m 60
1738082 10.5m 1050kg 3.50m 2.8m 65
1738092 12.0m 1170kg 3.40m 3.0m 70
1738093 12.4m 1270kg 3.50m 3.0m 75

 

Options & Accessories

Part No. Description
179353 Front levelling board 1.5m
179354 Front levelling board 2m
179359 Pair support wheels
179336 1.5m section complete with 7mm tines
179338 2.0m section complete with 7mm tines
1793051 1.5m section complete with 8mm tines
179308 2.0m section complete with 8mm tines
1 tine-Ext 1 set, 1-tine extension kit 7mm
1 tine-Ext 1 set, 1-tine extension kit 8mm
1793551 Hydraulic tine adjustment (per section)
17941811 Fence protector - (Left)
17941812  Fence protector - (Right

*Weight and HP based on harrows with 7mm tines

15m - 24m Semi-Mounted Grass Harrows

The 15m, 18m, 21m, 24m and the widest 27m uses a semi-mounted hydraulic scissor-folding system to keep the machines to a transport width of under 3m. 

Model No. Working Width Weight Transport Height Transport Width HP
1739022 15.0m 2800kg 2.40m 2.8m 130
1739032 18.0m 2990kg 2.40m 2.8m 150
1739035 21.0m 4020kg 2.40m 2.8m 170

1739042

24.0m 4250kg 2.40m 2.8m 180

1739052

27.0m 4650kg 2.40m 2.8m 200

Options & Accessories

Part No. Description
179353 Front levelling board 1.5m
179354 Front levelling board 2m
179359 Pair support wheels
179336 1.5m section complete with 7mm tines
179338 2.0m section complete with 7mm tines
1793051 1.5m section complete with 8mm tines
179308 2.0m section complete with 8mm tines
1 tine-Ext 1 set, 1-tine extension kit 7mm
1 tine-Ext 1 set, 1-tine extension kit 8mm
1793551 Hydraulic tine adjustment (per section)
17941811 Fence protector - (Left)
17941812  Fence protector - (Right)

*Weight and HP based on harrows with 7mm tines

GRASS HARROW BROCHURE

Check out our latest brochure by clicking the image below, download is available. 

OPICO Grass harrow and seeder brochure

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