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Plain disc harrow blade 55891 diameter 610 mm hex hole 37 mm

Plain disc harrow blade part number 55891 engineered for heavy duty tillage machinery and disc harrows. Manufactured from high strength 30 MnB 5 boron steel, it features a 610 mm outer diameter, 37 mm hexagonal center hole, 5.0 mm plate thickness, and 84 mm concavity, delivering consistent soil inversion and superior wear resistance.

30 MnB5 boron steel
Smooth plain edge
Deep 84 mm dish concavity

€69.90VAT incl.

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Description

Plain harrow disc blade 610 mm hex bore 37 mm - Part number 55891

Plain disc harrow blade for agricultural disc harrows and heavy tillage equipment, commercial part number 55891. Designed for deep cultivation, ground leveling, and thorough crop residue sizing, it provides a smooth, consistent cut across demanding field conditions. Manufactured from high-tensile 30 MnB5 boron steel, it ensures exceptional wear resistance alongside structural elasticity to endure impacts against buried field stones. It features an overall diameter of 610 mm, a deep 84 mm dish concavity, a reinforced 5.0 mm plate thickness, and a 37 mm central hexagonal bore for mounting on hexagonal gang shafts.

Key features

30 MnB5 boron steelHeat-treated alloy steel formulation engineered to maximize surface hardness against abrasion while resisting severe shock loads.

Smooth plain edgeContinuous cutting profile ensuring even soil slicing, consistent crumbling, and uniform seedbed leveling.

Deep 84 mm dish concavityCalibrated curvature profile designed for thorough soil inversion and efficient burial of surface crop residue.

Heavy-duty 5.0 mm thicknessRobust disc plate built to withstand high torsional loads and prolonged operational wear in tough soils.

37 mm hexagonal center holeAccurately sized hexagonal opening ensuring positive drive and eliminating rotational play on matching gang axles.

Specifications

Commercial part number	55891
Product type	Plain disc harrow blade
Material	Boron steel 30 MnB5
Diameter	610 mm
Center bore	Hexagonal 37 mm
Thickness	5.0 mm
Concavity	84 mm

Fitting tipsBefore installing the disc onto the hexagonal gang axle, remove all dirt buildup, rust, and surface burrs from the shaft and mating spool spacers. Slide the blade into position ensuring the 84 mm dish concavity matches the required operating angle of the gang assembly. Ensure that the 37 mm hexagonal bore seats flush onto the shaft flats without excessive bind to eliminate localized stress concentrations. Torque the axle gang nut to the equipment manufacturer's specified rating and check the complete disc pack for proper tightness after the initial operational hours in the field.