OFAS notched disc harrow blade 56156 Ø 610 mm boron steel

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OFAS notched disc harrow blade 56156 Ø 610 mm boron steel

OFAS notched disc harrow blade part number 56156, manufactured from high-strength 30MnB5 boron steel. Outer diameter 610 mm, thickness 6 mm, center hole 170 mm with 5x14 mm bolt hole pattern (Group G26). Matching parts: 56354, 55908, 55909, 56355. Engineered for heavy-duty disc harrows and intensive soil tillage.

30MnB5 Boron steel composition
High-efficiency notched profile
Large-diameter build (Group G26)

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Description

OFAS large-diameter notched disc blade in Boron steel 30MnB5 - Part number 56156

Large-diameter notched tillage disc blade for heavy and deep soil cultivation, manufactured by OFAS, commercial part number 56156. Professional-grade component for large disc harrows and heavy tillage implements, engineered to cut, shred, and incorporate heavy crop residues into tough, unplowed, or hard soils while delivering exceptional depth penetration. Crafted from top-tier heat-treated Boron steel (30MnB5) featuring advanced quenching and tempering processes, ensuring an optimal balance between high surface hardness, abrasion resistance, and outstanding impact toughness against buried stones and boulders. Features an increased outer diameter of 610 mm with a 6 mm thickness (Group G26), a 170 mm center bore, and a 5-hole mounting pattern with 14 mm hole diameters. Genuine OFAS product, fully compatible with matching hubs, supports, and structural components part numbers 56354, 55908, 55909, and 56355.

Key features

30MnB5 Boron steel compositionHigh-performance alloy heat-treated to provide exceptional wear life and high resistance to severe field shock loads.

High-efficiency notched profilePeripheral notches ensure an aggressive cutting action on heavy stubble and superior deep clod shattering.

Large-diameter build (Group G26)610 mm diameter and 6 mm thickness engineered for deep soil penetration and structural rigidity on heavy harrows.

5x14 mm mounting pattern170 mm center pilot hole with 5x14 mm bolt pattern for concentric seating and secure tightening on the hub.

Matching system componentsDesigned for seamless integration with dedicated bearing supports, silentblocks, and frames (matching codes 56354, 55908, 55909, and 56355).

Specifications

Commercial part number	56156
Product type	Notched disc blade (large diameter)
Manufacturer / Brand	OFAS
Material	30MnB5 Boron steel
Outer diameter	610 mm
Thickness	6 mm
Group	G26
Center bore diameter	170 mm
Mounting hole configuration	5 holes x 14 mm
Primary matched spare parts	56354, 55908, 55909, 56355

Fitting tipsBefore installing the OFAS 56156 notched disc blade, inspect the bearing hub, bearings, and rubber damping supports for wear or play. Thoroughly clean the mounting flange face, removing all compacted dirt, rust, or debris to ensure a flush, flat mating interface. Position the disc over the 170 mm center pilot and align the 5 mounting holes (14 mm). Use high-tensile grade fasteners with appropriate washers and locknuts, tightening the bolts evenly in a cross pattern to the implement manufacturer's specified torque rating. Recheck bolt tightness after the initial hours of field operation.