Plain disc harrow blade 57483 diameter 610 mm square 33 OEM 11134136

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Plain disc harrow blade 57483 diameter 610 mm square 33 OEM 11134136

Plain disc harrow blade part number 57483 designed for agricultural disc harrows, matching original OEM references Nardi 11134136 and ST625. Manufactured from 30 MnB 5 boron steel, it features a 610 mm diameter, 33 mm center square hole, 5 mm thickness, and 73 mm concavity, delivering excellent wear resistance and efficient soil turning.

Fits

NardiNardi disc harrows

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Description

Plain harrow disc blade for Nardi 610 mm square bore 33 mm - Part number 57483

Plain disc harrow blade for agricultural disc harrows and heavy tillage equipment, commercial part number 57483. Designed for deep soil tillage, seedbed leveling, and crop residue sizing, it provides a smooth, consistent cut across demanding field conditions. Compatible with Nardi ST625 series implements as a direct replacement for OEM reference 11134136. 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 73 mm dish concavity, a heavy-duty 5 mm plate thickness, and a 33 mm square center bore for heavy-duty axle mounting.

Key features

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

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

Calibrated 73 mm dish concavityCurvature profile designed for thorough soil inversion and efficient burial of surface crop residue.

Heavy-duty 5 mm thicknessReinforced disc plate built to withstand high torsional loads and prolonged operational wear in abrasive soils.

33 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 11134136 for ST625 series machinery.

Compatibility

Nardi disc harrows

ST625 (OEM ref. 11134136)

Specifications

Commercial part number	57483
OEM reference	11134136
Machine manufacturer	Nardi
Product type	Plain disc harrow blade
Material	Boron steel 30 MnB5
Diameter	610 mm
Center bore	Square 33 mm
Thickness	5 mm
Concavity	73 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 blade into position ensuring the 73 mm dish concavity matches the required operating angle of the gang assembly. Ensure that the 33 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.