Greater scraper

Maxi D10000 towed scraper

Farms & Farm Machinery - - Contents - Pho­tos: Lisa Pot­ter

As a Kiwi I get a real kick out of see­ing New Zealand-built ma­chin­ery hold its own in Aus­tralia and the wider world. Ki­wis are an in­ven­tive bunch who find unique so­lu­tions to prob­lems. The Waikato-based Hoyle fam­ily are now in their third gen­er­a­tion of prob­lem-solv­ing for the agri­cul­tural and earth­mov­ing in­dus­tries, as I dis­cov­ered dur­ing a re­cent visit to HW In­dus­tries.

The busi­ness is home to an im­pres­sive range of ma­chin­ery – from ag trail­ers and con­struc­tion dumpers to scrap­ers and rip­pers – de­signed and built on-site in Cam­bridge.

With a his­tory span­ning 60 years, it has been steered by mem­bers of the Hoyle fam­ily since it first started. To­day, owner Derek Hoyle is joined by three of his sons ded­i­cated to keep­ing the busi­ness pro­gres­sive and thriv­ing.

A tour around the fac­tory of­fers an in­sight into why these trail­ers are sought-af­ter, both in New Zealand and Aus­tralia. Clever de­sign, qual­ity ma­te­ri­als and work­man­ship are ob­vi­ous through­out the process.

I took a quick trip down the road to catch up with Dean Hoyle, the owner of DNA Con­tract­ing. Also based in Cam­bridge, DNA Con­tract­ing works around the greater Waikato area. Dean’s range of earth­mov­ing equip­ment in­cludes two HW scrap­ers pulled be­hind John Deere trac­tors.

The HW MAXI D10000 scraper I saw was work­ing on a con­struc­tion site and is the third HW scraper Dean has owned. He is cur­rently look­ing at pur­chas­ing an­other to use in tan­dem. “They’re ex­cep­tion­ally well built,” he says.

“The over­all weight is kept as low as pos­si­ble without com­pro­mis­ing strength, to max­imise the amount of ma­te­rial that can be shifted.”


Right from the front of the ma­chine, ev­ery­thing is well built and heavy-duty without any ex­cess weight. The draw­bar hitch is low to the trac­tor to max­imise pulling power (the scraper is also avail­able with a two-point link­age hitch).

It was good to see a guide rod stick­ing up from the rear axle, mak­ing it easy for the op­er­a­tor to see how far the ma­chine is tilted or when it’s back at level

Ex­tra hy­draulic rams are re­quired on a draw­bar model to lift the bowl and cut­ting edge up off the ground. The dou­ble-act­ing rams can be used to force the cut­ting edge into the ground in tough con­di­tions.

Steel hy­draulic pipework is used to run the lines up the draw­bar and any­where else on the ma­chine re­quired, adding longevity. Heavy safety chains are at­tached to the draw­bar.


The bowl is de­signed to carry 10 cu­bic me­tres of ma­te­rial and is built from 10mm plate steel, which is re­in­forced with plates up to 30mm thick where re­quired, keep­ing it strong and ro­bust without adding un­nec­es­sary weight.

A hy­drauli­cally op­er­ated apron as­sists even load­ing and un­load­ing. The clever ad­di­tion of vis­ual slots al­lows the op­er­a­tor to see in­side the bowl.

Both sides – the apron and the rear door – are built with rel­a­tively high sides, which keeps the ma­chine as short and com­pact as pos­si­ble while main­tain­ing ca­pac­ity.

This not only al­lows a good-sized load to be car­ried but it also means the ma­chine is flex­i­ble enough to be used top load­ing un­der a dig­ger to still carry a good load.

We had to scratch around for a while to find a neg­a­tive as Dean is a long-time fan of the HW scraper. The only thing we could come up with is that, in front of the apron, the cross­bar al­lows a small amount of soil to ac­cu­mu­late.

This can later fall off in the wrong spot, such as on the road, but it’s an easy fix (sloped an­gles rather than straight), and he plans to sort this on his next HW scraper.


Fit­ted on the bot­tom is a step blade. This fea­tures a slightly longer mid­dle sec­tion that digs slightly deeper, so more ma­te­rial is loaded into the cen­tre of the bowl, mak­ing it easy to get a full load without it spilling out over the sides.

There are other blade op­tions avail­able from HW In­dus­tries, in­clud­ing a straight blade, which is bet­ter for road­ing sit­u­a­tions or any­where an ab­so­lute smooth fi­nal cut is re­quired.

The third op­tion is a cas­tle edge blade, ideal when strip­ping top­soil or other ma­te­ri­als that re­quire break­ing up as they are be­ing loaded.

Wings on the outer edges of the bowl en­sure the full over­all width of the ma­chine cuts out for max­i­mum pro­duc­tiv­ity, also mak­ing it easy to cut bat­ters.


The sturdy rear push door moves for­ward to push ma­te­rial out of the bowl when emp­ty­ing the scraper.

It’s evenly braced to the cen­tre of the rear of the ma­chine, en­sur­ing ma­te­rial is al­ways pushed out evenly, re­gard­less of how heavy or sticky it is.

Ny­lon wear plates on the slide rails min­imise wear and main­te­nance, and grease points are kept as high as pos­si­ble to keep them out of the dirt and make them easy to ac­cess.


At the rear of the scraper, two large 700/50-26.5 flota­tion tyres carry the weight of the ma­chine while min­imis­ing ground com­paction. They also help keep the ma­chine sta­ble over rough ter­rain, as does a low cen­tre of grav­ity.

A side tilt ram fit­ted to the rear axle is a great idea that al­lows the bowl and cut­ting edge to be tilted ei­ther way up to five de­grees from the level of the rear axle. This al­lows the scraper to be lev­elled on un­even ter­rain and makes it easy to build cam­bered roads.

It was good to see a guide rod stick­ing up from the rear axle, mak­ing it easy for the op­er­a­tor to see how far the ma­chine is tilted or when it’s back at level.


Al­though not be­ing used in tan­dem at the time, the ma­chine re­viewed was built as a lead scraper, al­low­ing an­other match­ing ma­chine to be towed be­hind it. Ex­tra steel strength is built into the frame to han­dle the stress of tow­ing an­other scraper, and a rear draw­bar is fit­ted.

A sec­ond set of hy­draulic lines run to the back of the ma­chine to an elec­tric-over-hy­draulic valve bank. This is used to op­er­ate the sec­ond scraper.

The hy­draulics are run on con­tin­u­ous flow and an elec­tric con­trol box is used in the cab for the sec­ond scraper. This is a great way to in­crease pro­duc­tiv­ity where cir­cum­stances al­low, as horse­power re­quire­ments are not hugely more be­cause only one scraper is be­ing loaded at a time.

Brakes can be spec­i­fied for those wor­ried about stop­ping with a heavy load be­hind the trac­tor.


HW In­dus­tries of­fers some in­ter­est­ing op­tions worth men­tion­ing that can be fit­ted to the scrap­ers. Firstly, there are pre-rip­pers – these can be hy­drauli­cally low­ered be­low the draw­bar in front of the cut­ting blade to loosen ma­te­rial, mak­ing load­ing eas­ier. I’m told that, in hard ground, this re­sults in sig­nif­i­cant sav­ings in fuel and time.

A sec­ond im­pres­sive yet spe­cialised op­tion is a rut-fill­ing chute for fill­ing ruts left by cen­tre pivot ir­ri­ga­tors.

Again, this is clev­erly de­signed so that when not in use it’s lifted up to the draw­bar, so the scraper can be loaded as nor­mal.

The chute is low­ered down and back un­der the bowl to catch ma­te­rial as it’s ejected, and di­rected into the rut. This gives you an ex­tremely ver­sa­tile multi-use ma­chine.


HW In­dus­tries has been build­ing scrap­ers for more than 60 years, start­ing back in the 1950s. With a third gen­er­a­tion of the fam­ily now in­volved in the busi­ness, there is a ‘can do’ in­no­va­tive ap­proach, which has seen them con­tin­u­ally de­velop their ma­chines to meet the re­quire­ments of the peo­ple us­ing them. They are happy to lis­ten and in­cor­po­rate new ideas into the ma­chines.

All HW In­dus­tries ma­chin­ery is backed by a full two-year war­ranty, show­ing the faith they have in their gear.

I was par­tic­u­larly im­pressed by the in­cor­po­ra­tion of clever yet sim­ple so­lu­tions to of­ten-en­coun­tered prob­lems.

1. The HW In­dus­tries MAXI D10000 scraper and John Deere 8530 trac­tor owned by DNA Con­tract­ing

2. Wings on the outer edges of the blade en­sure ma­te­rial is cut across the full width of the ma­chine

3. The HW Maxi is New Zealand-de­signed and man­u­fac­tured

4. Steel hy­draulic lines are used where pos­si­ble to keep them tidy and for longevity

5. Heavy-duty plates are used to strengthen the ma­chine

6. Load­ing the scraper on a con­struc­tion site near Cam­bridge

7. Two heavy-duty rams lift the apron,

let­ting ma­te­rial in or out

8. Side tilt was fit­ted to the ma­chine as an op­tion, which al­lows five de­gree of tilt left or right of the rear axle

9. Four sets of hy­draulic re­motes are

re­quired to run the scraper

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