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Berends Grader Blades

 

4’ & 5’ Grader Blade (P/N 0002 & 0016)

Designed to fit compact to small standard tractors, it is fitted with bolt on Cat 1 pins which can be fitted inwards to suit the narrow linkage on small compacts such as the B Series Kubota. Very under stressed as the turntable, cutting edge, 6mm mouldboard etc is the same as larger blades. Fixed top, blade can be rotated 360 degrees with 24 angle positions including fully reversible. Tilt via multiple lower linkage pin position and adjustment of levelling box. Very inexpensive, good for customers where price is an issue, particularly when not G.S.T exempt. Fitted with replaceable, reversible, hardened cutting edge. Optional wheel kit (P/N 0001). Suggested horsepower range 16 – 35. Weight 101kg & 115kg.

Comparisons against other brands: Many are far too light (compare the weight), little structural support behind the mouldboard, have limited angle adjustment (which requires tools to adjust), don’t have reversible hardened cutting edges, and provide no option for a wheel-kit.

 

6’ Standard Grader Blade – Fixed Model (P/N 0008)

Similar to the standard grader blade, it has the same 6mm mouldboard. Has a fixed top (no adjustable offset) fitted with bolt on pins which can be fitted inwards to suit narrower linkage on smaller tractor. It can be rotated 360 degrees with 24 angle positions including fully reversible. Made to suit price conscious buyers, being over $120 cheaper than the standard model. Tilt via multiple lower linkage pin position and adjustment of levelling box. Very inexpensive, good for customers where price is an issue, particularly when not G.S.T exempt. Fitted with replaceable reversible cutting edge. Optional wheel kit (P/N 0009). Suggested horsepower range 20 – 50. Weight approx 160kg.

Comparisons against other brands: Many are far too light (compare the weight), little structural support behind the mouldboard, have limited angle adjustment (which requires tools to adjust), don’t have reversible hardened cutting edges, and provide no option for a wheel-kit.

 

6’ Standard Grader Blade (P/N 0003)

The standard and the medium duty model grader blades share the same top, differing only in the mouldboard. This is a very versatile machine offering incredible value for money. The beauty of the design is recognised by the number of imitators on the market. None are as strong – ours are heavier in several important stress areas and are still unique! The standard features tilt adjustment via pin fitting positions on the lower linkage brackets, five positions of offset on each side of the grader blade, and 24 angle positions including reverse settings. Mouldboard 6mm thick approx 350mm high. Optional wheel kit (P/N 0009) Suggested horsepower range 20 – 50. Weight approx 180kg.

Comparisons against other brands: Many are far too light (compare the weight), little structural support behind the mouldboard, have limited angle adjustment (which requires tools to adjust), don’t have reversible hardened cutting edges, and provide no option for a wheel-kit.

 

6’ Medium Duty Grader Blade (P/N 0005)

The standard and the medium grader blades share the same top, differing only in the mouldboard. This is a very versatile machine offering incredible value for money. The beauty of the design is recognised by the number of imitators on the market. None are as strong – ours are stronger in several important stress areas and are still unique! The standard features tilt adjustment via pin fitting positions on the lower linkage brackets, five positions of offset on each side of the grader blade, and 24 angle positions including reverse settings. Mouldboard 8mm thick, approx 450mm high. Optional wheel kit (P/N 0009) Suggested horsepower rang 30 – 60. Weight approx 200kg.

Comparisons against other brands: Many are far too light (compare the weight), little structural support behind the mouldboard, have limited angle adjustment (which requires tools to adjust), don’t have reversible hardened cutting edges, and provide no option for a wheel-kit. Many claim to be medium duty but the mouldboard is only 6mm thick (equivalent to standard duty model).

 

6’ MD Grader Blade with 4 rippers attached (P/N 0006)

This is the same model as the 0005 but with four rippers attached. The rippers fitted to this blade make it much more versatile. They are large enough to rip out in the paddock if required, strong enough to tackle hard tracks and heavy enough to penetrate. Working in the normal direction of travel, they pull in properly and do not wreck the blade like those working in the opposite direction. They also add a lot of weight to the blade, so even when not being used as rippers they help blade operation by adding ballast to it. See 0005 for structural features. Optional wheel kit (P/N 0009) Suggested horsepower rang 30 – 60. Weight approx 260kg.

Comparisons against other brands: Usually mounted with rippers which only allow ripping in reverse. This is hard on mouldboard as well as the operator. Rippers are often too light for hard going and are not adequately supported resulting in them moving around too much.

 

6’ MD Grader Blade with ratchet tilt (P/N 0007)

This is the same model as the 0005 however the turntable is fitted with a pivot pin system mounted underneath the cog allowing tilt to easily be controlled via a ratchet (or optional 2 ½” x 8” ram P/N 0010). Tilt will be around 30° each way. See 0005 and 0007 for structural features. Optional wheel kit (P/N 0411) Suggested horsepower rang 30 – 60. Weight approx 206kg.

Comparisons against other brands: There are not many comparative brands in this set-up. Some rely on the Port – multi style set-up (see EHD blades below) however they rarely make them in an equivalent medium duty model.

 

6’ MD Grader Blade with hydraulic angle/tilt (P/N 0414 & 0415)

This is a similar model to the 0005 however the turntable has been adapted to take a 3” x 12” ram. This adjusts the angle at approximately 45° each way. The blade can still be reversed for back blading. Using the same tilt system as the 0007, the blade can be fitted with either a ratchet or 2 ½” x 8” ram to adjust the tilt to around 30° each way. Offset is similar to the 0005 model. Ideal for small to medium tractors where operators want the ability to regularly and quickly change the angle and tilt from the tractor seat. See 0005 and 0007 for structural features. Optional wheel kit (P/N 0411). Suggested horsepower rang 30 – 60. (Note: It is not advised to use this model outside of its recommended horsepower range.) Weight approx 240kg.

Comparisons against other brands: There are not many comparative brands in this model.

 

Heavy Duty Model Grader Blades – 6’, 7’ & 8’ (P/N 0035/0036/0037)

The HD model was added to the range when the EH model was upgraded to similar to Hydraulic blade specifications, making the gap between the MD and the EH too large. It is a simplified version of the old EH, with the tilt function being moved from under the turntable to the linkage pins similar to the MD. The heavy duty is fitted with stepped Cat 1 / 2 pins at Cat 1-2 widths. The angle can be adjusted from the tractor seat via the spring loaded locking gear lever, a unique JBI feature. The frame is manufactured from flat bar, the beam from 16mm plate with 8mm boxing. The HD looks similar to the EH model however the offset pivot is not bushed (which the EH is) and the main pivot is 65mm turned down to 50mm at the pivot and not bushed or greasable (the EH main pivot is 90mm turned down, bushed and greasable). The mouldboard is 10mm thick 500mm high, properly curved (see EH information) and boxed for strength with 6mm plate supports (two on 7’ and 8’, and one on 6’). The HD does not have the extra corner supports found on the EH. Optional Holden wheel kit (P/N 0026) Suggested horsepower range 40 – 100. Weight approx. 6’ - 305kg, 7’ - 350kg, 8’ - 370kg

Comparisons against other brands: There are not many comparative brands in this model. Some don’t have the ability to tighten the cog which allows the blade to become sloppy and won’t provide a smooth finish. Many have inadequate ‘smaller’ wheel kits which don’t effectively control depth. We use a 14” Holden wheel.

A note on tilting via the linkage pins

The STD, MD and HD blades all tilt via the linkage pins, some people think this restricts their ability to Vee drain. This is not the case at all, you can make a drain just as well with this blade as you can with a EH or Hydraulic model.

How? Well the critical adjustment is the relation of the blade to the tractor. If the blade is 6” (150mm) lower at one end and mounted so this end runs behind the tractor wheel, every pass will cut at least 6” lower than the last. So if you make two passes (up and back) you will make a Vee drain 2’ (600mm) - deep conditions permitting. A few passes and you can turn the tractor over. If you had a grader blade that tilted at 45 degrees it would do no better.

But is it harder to adjust the tilt via the pins? Yes, but experienced operators rarely touch the pins. As the actual angle of the blade makes a little difference, enough can be gained from the tractor levelling box without altering the pins. Also as you generally have the blade on a fairly acute angle to carry soil up out of the drain, the top link can be shortened to give even more tilt. Easy! Most operators Vee drain one side, some set the blade up at an angle on the pins then straighten it on the levelling box. That way they get more tilt from the blade when they want it and again never touch the pin. If you are wondering why we don’t fit a tilt, it’s not just a question of cost, it’s cost and strength. Designs like the Port-Multi are weak as they rely on a pipe (not high tensile like modern RHS) and as you offset while tilting the cutting angle of the blade decreases. Designs like these also wear very badly, as once the wedges get loose the tilt wobbles. This means as you grade, the blade creates corrugations. This will not happen on our blades. Our blades work well, are inexpensive and strong. We could make a simple tilt but the blade would be more expensive and weaker.

Why then do the more expensive blades we make have under beam tilt given what is written above? There are a few reasons. Firstly the big blades are much heavier and can cut a deep drain in a small number of passes, making tilt more useful. Secondly they are made to be easy to use, especially as often fitted to bigger cab tractors where you do not want to be on and off all the time. Lastly they are priced and positioned as the best – strongest, more expensive, and easy to use.

  
 

Extra Heavy Model Grader Blades – 7’ and 8’ (P/N 0039 & 0040)

The EH is basically a manual version of the Hydraulic blade, built to cope with the higher horsepower tractors which are more common today. Fitted with Cat 2 linkage, it features a RHS headstock the same as the hydraulic, only with two load bearers to the beam (the hydraulic has three). These load bearers are bushed. The beam is unlike the hydraulic, being a profile cut 16mm plate boxed with 8mm. This is to facilitate the offset arm adjustment, which gives four positions of offset each side. The offset moves the blade approx 2’ (600mm) each way. The angle can be adjusted from the tractor seat via the spring loaded locking gear lever, a unique JBI feature. The blade swivels 360 degrees, and has 24 positions including reversed. The rest of the blade is almost exactly the same as the hydraulic, (however they are not interchangeable as the blade top lug is a slightly different shape due to the difference between manual and ram adjustment and the main beam is shorter on the EH). The main pivot pin is made from 90mm high tensile steel, turned down to 65mm where it runs through a greasable sleeve and down to 2” thread on top. By using the 90mm pin turned down the leverage of the blade is taken from the flange on the end of the pin to the beam, and the area of metal affected by welding does not come under leverage. It has a nut so you can keep the cog tight. It is worth noting many designs of blade do not have any method of keeping the moving parts tight. As you will be well aware, anything loose wears and breaks. Our blades are strong, as the nut allows you to keep the blade cog tight, and because the adjuster takes the locking gear away from the cog, it is not necessary to have the cog loose to facilitate adjustments like some other makes. This is also why we also have a nut on the tilt pivot pin. Both tilt and angle adjustments are greasable - this blade will last a long, long, time. It is also worth noting the materials we are using now. The material used in the beam to the blade area is semi and full high tensile alloy steel, giving enormous strength in an area which gets high stress. The mouldboard is made from 10mm plate, 500mm high, and properly curved to give a blade which has the right cutting angle and cleans properly in use. The blade is then double boxed with 6mm plates on the rear. Inside the boxing are profile cut supports to triangulate the stress from the mouldboard through to the turntable. Note the boxing does not go right to the ends, we put 12mm solid gussets into the bottom corners. This not only gives strength where it is really needed in the corners (especially when cutting into hillsides or draining) but also gives clearance when working at an angle so the gusseting on the back of the blades does not cut into the ground. The tilt adjustment on the rear of the blade is simple, easy to use and effective. The ratchet can be exchanged for a 2 ½” x 8” hydraulic ram to make it even easier. With the hydraulic tilt option fitted the blade can be dug in one end, and the angle mechanism released via a rope from the tractor seat, so the angle can also be adjusted without leaving the tractor seat by driving forward or backwards. As previously remarked a worn tilt mechanism leads to bad grading – hence the bronze bushes fitted to both ends of the tilt adjustment, which are easy to replace. 6 The hardened, cutting edge is fully reversible. The rounded profile at the rear of the blade allows it to be run backwards for spreading material. Optional Holden wheel kit (P/N 0026) Suggested horsepower range 60 – 120 HP. Weights approx. 7’ - 460kg, 8’ - 490kg.

Comparisons against other brands: Some don’t have the ability to tighten the cog which allows the blade to become sloppy and won’t provide a smooth finish. The tilt functions are often based upon the Port Multi style which has the tilt function mounted above the blade. This set-up means that if the blade is tilted, the angle will decrease as you adjust the offset. Again, the use of locator pins to adjust tilt result in blades wearing and becoming sloppy. You will not find many blades in Australia from curved 10mm – most (even some quite expensive machines) are 8mm, which is a lot weaker starting point even if you do put a lot of gussets on. Many blades are folded not curved, as it is difficult to curve a mouldboard especially a 10mm thick one. As the largest grader blade manufacturer in Australia, we are set up for such work. Many also have inadequate ‘smaller’ wheel kits which don’t effectively control depth. We use a 14” Holden wheel.

 

8’ & 10’ Hydraulic Grader Blades (P/N 0013/0014/0017/0028)

The Hydraulic is the strongest blade we make, and comes as standard in 8’ with options of 7’ and 10’. Fitted with Cat 2 linkage, it features a RHS headstock, with three load bearers to the beam. The top and bottom bearers are bushed and greasable (offset pivot). The beam is made from one piece of 150 x 150 x 9 high tensile RHS, giving enormous structural strength. These grader blades are working in Australia, New Zealand, Japan and S.E. Asia and are proving extremely rugged. The two ram and three ram models are exactly the same but for the exchanging of one ram for a manual link. The rams fitted to the blade are high Australian made slimline cylinders with screw on end caps. The moving ends of the rams are bronze bushed. The tilt ram is 3” x 10” on all sizes, the angle ram is 3” x 12” on the 8’ model and 3 ½” x 12” on the 10’ model. In the case of the 2 ram units, the offset function is fitted with a Extra Heavy Duty Cat 2 adjustable top-link. The turntable on the blade has two lugs, so the blade can be run forward or backwards with full hydraulic control. The angle is adjusted via the exclusive swivel assembly. The patented design eliminates the need for a pivot pin. With other hydraulic blades the pivot pin can be a weak point as often the angle is hydraulically adjusted whilst the tractor is moving. This causes extreme stress on the pin especially when used on high HP. Tractors in hard conditions. The swivel assembly consists of a 25mm thick turntable held together by a circular locking plate. It is greased prior to assembly and has grease points for further lubrication. It is also worth noting the materials we are using now. The metal used in the beam to blade area is semi and full high tensile alloy steel, giving enormous strength in an area which gets high stress. Refer to the information on the EH model as most characteristics of the mouldboard and the tilt mechanism are the same. Optional Holden wheel kit (P/N 0026) Suggested horsepower range 70 – 240 HP. Weights approx. 8’ - 555kg, 10’ - 603kg.

Comparisons against other brands: Undoubtedly, the best value for money hydraulic grader on the market. Most have a pivot pin controlling the angle adjustment which is usually the weakest point. You will not find many blades in Australia from curved 10mm – most (even some quite expensive machines) are 8mm, which is a lot weaker starting point even if you do put a lot of gussets on. Many blades are folded not curved, as it is difficult to curve a mouldboard especially a 10mm thick one. As the largest grader blade manufacturer in Australia, we are set up for such work. Many also have inadequate ‘smaller’ wheel kits which don’t effectively control depth. We use a 14” Holden wheel.

 

6’ Dairy Smudger (P/N 0399)

The structural details are the same as the 0005 MD grader blade. Designed for scraping muck and waste from concrete floors such as in dairies or chicken sheds. The traditional cutting edge is replaced with a 20mm thick steel reinforced rubber conveyor belt. This hard wearing edge is gentle on concrete but aggressive on waste. Two bolt on wings fitted at 45° angles contain the muck in front of the blade. This smudger can easily be adapted back into a regular grader blade.

Comparisons against other brands: There would be unlikely to be any similar models available on the market.