Larwoods Ag Services

Larwoods Ag Services

- Disc Mulch Chain


An innovation unique to Kelly Engineering is our Disc Mulching range of Chains. Designed initially for managing stubble residue, the disc chains are now used for everything from primary tillage to planting poppies. The mulching chains are used with the primary aim of returning crop residue to the soil. They roll down stubble and chop and split it into smaller lengths allowing weathering and microbial breakdown to accelerate. The importance of an integrated approach to weed control can’t be overstated. The Kelly Disc Chains open the way for quick, cost effective, shallow tillage to help in the battle against herbicide resistance. Both the control of existing weeds and the germination of weed seeds are tasks the Disc Chains revel in.

The chains also perform a valuable role in preparing a seedbed in fields that have been ploughed and left cloddy or rough. Many operations now use the Diamond Harrow for all their seeding preparation, some even for seeding. There isn’t a more cost effective way to prepare you seedbed.

Air Seeder kits for small seeds or coarse grains have been fitted and used to great effect. Large areas can be covered in a day very efficiently. Maximum use can be made of moisture establishing crops at optimum times to enhance yield potential.

  • Just as it sounds, the simple concept when put into practice provides a revolutionary option for land management practices.
  • Heavy ‘chains’ are constructed specifically for our machines. Each link of the chain has a concave disc attached to it. The combination of chain tension, weight and disc shape is used to advantage in designing chains to suit different soil types and applications.
  • The discs are made from a variety of abrasion resistant metals, they are designed to last and last. 40 000 ha from a set is fairly typical. Less than a dollar per hectare, not each year but over the life of the chain!
  • The concave shape adds strength to the discs and enhances their cutting and digging abilities.
  • Not content we just inventing the disc chain concept, we continually seek ways to improve its value to customers. We now offer a range of disc chain types to suit specific soil types and conditions.

CL – Cast Steel Link.

This innovative disc chain is our premium product and unmatched by any impersonator or copycat. The CL links are made from super tough chrome molybdenum steel alloy. The individual links make service and maintenance a breeze. To ensure the integrity of the chain each disc is supplied with a locking tab, once assembled it stays assembled.

The CL discs form a chain that weighs 70 kg/metre and is the most aggressive of our offering. Ideal for medium to heavy soils and residues.

W36 – Welded Disc Chain 36mm.

Our standard, tried and tested work horse. The Q&T plates used on our welded steel chains offer superior wear resistance and reliability. This chain is best suited to medium soil types. It works very well in combination with the more aggressive CL disc chain, providing a lower cost, easier pulling option that handles damper conditions with ease. Simply fit the W36 to the rear of the Diamond Harrow and the CL blades to the front. The W36 chain is 50 kg/metre.

R300 – Welded Disc Chain 38mm

New to the range in 2011. The R300 has been designed with light to medium soils in mind. A unique chain has been designed for our application, allowing for closer spaced discs than previously possible on a 38mm chain. 8 discs per metre compared to the previous 6, gives the 70 kg disc chain an advantage in light soils. The improved depth control is a breakthrough, the superior weed control a bonus. Heavy enough for the bulkiest residue this new offering has been met with instant market approval.


High grade RHS and plate are combined to produce a strong and durable frame. Sections include 150×100 RHS in 5 and 6 mm wall thickness. Profile and Laser cut plates are used to give strength, functionality and a professional appearance. The rugged and reliable frames have been strengthened and improved to withstand the extra stresses encountered with the Disc Chain. Each year millions of hectares of experience help to keep our product ahead of the game.


Increasing demand on our machines has led us to offer a range of wheel options.
On our 60 models we fit the heavy duty BKT 16.5/85×24 16pr lug tyre as standard.
We now offer an alternative transport wheel option. BKT 550/60×22.5 wheels.
The 50 is standard with BKT 15.5/85×24 wheels all round. It will now accommodate 385/65×22.5 wheels in the centre.

The popular 30, 40 and 45 models come standard with BKT 15.0/85×18 implement tyres.
For extended road work we offer 385/65×22.5 wheels in the centre.

Hydraulic Fold

Folding totally from tractor seat – user friendly.
All Models use two pairs of 1/2” ISO standard hydraulic couplings. Larger models incorporate a multi stage sequence valve to manage the folding and unfolding operations. Theses customised manifolds incorporate safety features for burst protection and operator safety. High quality Ryco hose and fittings are used exclusively.


PJ Green – Small Seed Air Seeder for spreading granulated chemicals or sowing small seeds. Special Build sizes to suit air seeder widths are available by negotiation.

By purchasing both mulching and prickle chains the Kelly Diamond Frame is a versatile and cost effective implement.

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