Product Overview

The Adjustable-Width Disc Harrow For Vineyards is a tractor-drawn implement with hydraulic or mechanical shifting frames for inter-row soil tillage in variable-spaced vineyards.

Technical Specifications

Category	Parameter	Value / Specifications
Dimensional Specifications	Working Width Range	1.20 m – 1.85 m
	Transport Width	1.15 m
	Total Weight	580 kg (including rear roller)
	Hitch Type	Standard 3-Point Hitch (Cat. I / II)
Component Specifications	Number of Discs	12 Discs (6 Front / 6 Rear)
	Disc Diameter	Ø 510 mm (20")
	Disc Thickness	4.5 mm
	Disc Type	Front: Notched / Rear: Plain
	Disc Spacing	200 mm
	Axle Material & Diameter	High-Tensile Square Steel / □ 30 mm
Operational Parameters	Max. Working Depth	120 mm
	Width Adjustment Type	Hydraulic Double-Acting Cylinder Adjustment
	Gang Angle Adjustment	Manual Pin-Lock Adjustment (0°–18° Continuous)
	Rear Roller Type & Diameter	Cage / Pipe Roller (Ø 320 mm)
Compatibility & Power	Required Tractor Power	45 – 70 HP
	Hydraulic Requirement	1 Double-Acting Remote Valve
	Recommended Working Speed	6 – 10 km/h

Materials, Welding & Components

Structural Framework

Q355B structural carbon steel tubing absorbs high-load torsional stresses during deep vineyard tillage.

Disc Blade Material

Oil-quenched 65Mn spring steel (HRC 45-52) delivers high impact and wear resistance.

Robotic Welding

Assembled via multi-axis robotic pulse-MIG welding to ensure uniform, defect-free structural penetration.

Bearing Units

Heavy-duty greaseable square-bore ball bearings are housed inside durable ductile iron castings.

Hydraulic System

Integrated with ST52-3 honed steel cylinders and double-steel-braid hoses rated for 250-bar pressure.

Surface Coating

Treated via shot-blasting before applying dual-layer electrostatic powder coating for chemical corrosion protection.

Applications

Application	Field Operation
Vineyard Row Inter-Rows	Shifting gang frames hydraulically to match varying lane widths.
Weed Management	Cutting surface weed root systems between vine rows.
Cover Crop Incorporation	Slicing and mixing green manure crops into topsoil layers.
Soil Compaction Relief	Breaking crust layers formed by repeated tractor traffic.
Pruning Residue Mulching	Shredding and incorporating grapevine prunings into the soil.

Factory Capabilities & OEM/ODM

01.

Factory Capabilities

Tooling & Fixtures: Modular welding jigs allow frame assembly changeover within 30 minutes.
Machining Precision: Mechanical link pins and pivot splines are processed using multi-axis CNC turn-mill centers.
Supply Chain: Standard agricultural hub assemblies are sourced from ISO-certified OEM component manufacturers.

02.

OEM/ODM Services

OEM Customization: Custom client logos are laser-cut into structural steel plates based on CAD files.
Color Branding: Industrial powder coating is matched to specified fleet color requirements.
ODM Turnaround: Prototype modifications are delivered within 45 days after blueprint confirmation.
Technical Integration: Mounting brackets are adapted for regional tractor linkage variants.

Quality Control & Stress Testing

Raw Material Verification

Ultrasonic testing is used on Q355B steel tubes before fabrication.

Welding Joint Inspection

Microstructure analysis of pulse-MIG welds confirms uniform penetration depth exceeding 85 percent.

Component Hardness Testing

Rockwell apparatus checks 65Mn steel discs to maintain HRC 45-52 impact durability.

Hydraulic Pressure Integrity

Hydraulic cylinders undergo 300-bar pressure holding tests for 10 minutes to ensure seal integrity.

Operational Cycle Testing

Articulated linkage frames endure 500 simulated expansion movements to verify pivot tolerance stability.

Salt Spray Evaluation

Coated steel panels withstand 500-hour salt spray testing to validate outdoor rust resistance.

FAQ

Q: Are the grease points accessible without dismantling the gang assembly frames?

A: Yes, centralized grease banks route lubrication lines directly to external, easily accessible locations on the main chassis.

Q: What shipping configuration is used to optimize ocean container space for export?

A: Implements are shipped partially disassembled inside stackable steel crates, allowing up to twelve units in a forty-foot container.

Q: How does the factory ensure component tracking if a field failure occurs?

A: Each unit features a stamped serial number linked to raw material heat lots and welding station records.

Q: Can the hitch configuration accommodate tractors with quick-hitch couplers?

A: The design incorporates a dual-category clevis hitch compatible with most standard Category I and II quick-hitch systems.

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Adjustable-Width Disc Harrow for Vineyards