Harrow Discs

Brohawk is currently manufacturing and exporting scores of sizes ranging from 16 inches to 28 inches in diameter and 2.5 mm to 8mm in thickness. To manufacture discs we use EN 45 i.e equivalent to SAE 1070 grade material. We maintain hardness of the discs from 38 to 42 HRC. We manufacture discs with centre hole square, round, hex , Octave or as per the drawing and specification of the buyers. The varieties of disc blades that we manufacture are: » PLAIN DISC: Repeated use of land for cultivation causes upper layer of soil to lose its nutrients viz. Nitrogen, Phosphorus, Sulphur, etc. so agricultural harrow discs with plain discs are used for ploughing of soil, which turns outer layer of soil inside and extracts inner fine & fertile soil making growth of crops easier. » NOTCHED DISC: A notched disc (also known as cut-way or scallop disc) is used to make soil finer. It crushes the soil making it smooth and ready for cultivation. » FLAT DISC / COULTER: These are flat discs that are used for sowing of seeds. Wherever they travel, a trailing cut is made where seeds are sown Our Discs are made with the following process Cross Rolling Process We use cross rolling process to make the sheets for the discs. Disc blades made out of Cross-rolled sheets are stronger, tougher and have much lesser wear and tear. Cross rolling ensures optimum mixing of grains in the raw material, thus imparting suitable properties. Automatic Plant With a semi-automated disc plant, we manufacture disc blades with uniform hardness and strength. This makes our disc tougher, more reliable and result in a longer field life. Automation has resulted in increased productivity and improved quality of disc blades. Shot Blasting Shot blasting of the disc blades increases its fatigue life. Due to automatic shot blasting, high quality surface finish disc blades are manufactured. Quality Check All disc blades manufactured are very closely inspected and are passed through very stringent quality control tests. Some of the important tests are: • Dimensional tests • Hardness and toughness tests • Crack detection test • Concavity check • Tensile strength measurement These tests are done to ensure that only high quality products reach the customer.

Sizes and specifications of the discs SPECIFICATION SIZE CONCAVITY THICKNESS MM INCH MINIMUM MAXIMUM MM 355.6 14 30 34 3 381 15 34 38 3 406 16 38 42 3 457 18 46 50 3 457 18 46 50 3.5 508 20 60 64 3.5 558 22 69 73 4 558 22 69 73 4.5 558 22 69 73 6 609 24 81 85 4.2 609 24 81 85 4.8 609 24 81 85 5 609 24 81 85 6 660 26 103 107 6 660 26 103 107 7 660 26 103 107 8 711 28 113 117 6 711 28 113 117 7 711 28 113 117 8