Notched disc harrow blade 57488 diameter 660 mm square 42 OEM 11134166

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Notched disc harrow blade 57488 diameter 660 mm square 42 OEM 11134166

Notched disc harrow blade part number 57488 engineered for heavy duty tillage machinery, matching original OEM reference Nardi 11134166. Manufactured from durable 30 MnB 5 boron steel, it features a 660 mm diameter, 42 mm square center hole, heavy duty 6 mm plate thickness, and 87 mm concavity, delivering aggressive residue cutting and superior wear life.

Fits

NardiNardi disc harrows

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Description

Notched harrow disc blade for Nardi 660 mm square bore 42 mm - Part number 57488

Replacement notched disc harrow blade for heavy agricultural disc harrows and deep tillage equipment, commercial part number 57488. Engineered for primary soil fracturing, aggressive clod crushing, and thorough slicing of heavy crop residues, it delivers exceptional ground penetration even in heavy, compacted conditions. Compatible with Nardi implements as a direct replacement for OEM reference 11134166. Manufactured from high-tensile 30 MnB5 boron steel, it ensures superior resistance to abrasive wear along with structural elasticity to endure severe impacts against buried stones. It features an extra-large overall diameter of 660 mm, a deep 87 mm dish concavity, an extra-heavy 6 mm plate thickness, and a 42 mm center square bore for large-section gang axle mounting.

Key features

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

Notched cutting edgeScalloped perimeter designed to maintain continuous gang rotation, slice dense root systems, and tackle hard untilled ground.

Deep 87 mm dish concavityCalibrated curvature profile optimized for effective soil turnover, clod fracturing, and residue burial into the seedbed.

Extra-heavy 6 mm thicknessRobust disc plate engineered to withstand extreme torsional stress and prolonged wear in harsh, heavy soils.

42 mm square center holeHeavy-duty central opening ensuring a secure, non-slip lock onto matching large-section harrow gang axles.

Nardi OEM fitDirect interchangeability with original equipment reference 11134166 for dependable equipment servicing.

Compatibility

Nardi disc harrows

Nardi (OEM ref. 11134166)

Specifications

Commercial part number	57488
OEM reference	11134166
Machine manufacturer	Nardi
Product type	Notched disc harrow blade
Material	Boron steel 30 MnB5
Diameter	660 mm
Center bore	Square 42 mm
Thickness	6 mm
Concavity	87 mm

Fitting tipsBefore installing the disc onto the square gang axle, clean off all dirt buildup, rust, and surface burrs from the shaft and mating spool spacers. Slide the notched blade into position ensuring the 87 mm dish concavity and cutting notches face the required operating angle of the gang assembly. Ensure that the 42 mm square bore seats flush onto the shaft without excessive bind to eliminate localized stress points. 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.