Overview

This document presents a detailed technical overview of various models of UNI mowers and related agricultural machinery produced by Gerhard Dücker GmbH & Co. KG. The focus is on specifications, operational features, and application areas of flail mowers designed for environmental landscape maintenance and agriculture.

1. Product Range and Models

• PMK Uni Mower: Designed for steep slopes, suitable as front attachment on special slope carrier vehicles (e.g., Aebi, Reform). Features lateral oscillation and optimal mowing head guidance.
• UMT Series (10, 13, 15, 18): Compact universal mowers for small and municipal tractors from 13 kW (18 HP). Available in working widths from 1.00 m to 1.80 m. Can be rear, front, or combined attachments. Mechanical lateral displacement standard (0.45 m), hydraulic optional.
• UMK Series (16, 18, 21): Robust mowers for tractors with 23 to 44 kW (30 to 60 HP). Working widths from 1.60 m to 2.10 m. Available as rear, front, or combined attachments. Optional heavy free-floating flails for tougher vegetation. Lateral displacement up to 60 cm available.
• UM Series (19, 23, 27, 30, 40): Larger mowers for tractors from 33 kW (45 HP) upwards, with working widths from 1.90 m to 4.00 m. Features include sturdy frame, large gear and belt drives, and lateral displacement options. Suitable for a wide range of vegetation including thorny bushes and shrubs up to 4 cm diameter.
• GFM 740 Large Area Mower: Wide working width of 7.40 m, available in divided or closed build. Features hydraulic relief control, obstacle protection via lateral mulcher movement, and hydraulic positioning for transport and work modes.

2. Technical Features and Specifications

• Attachment and Mounting: All mowers offer versatile three-point hydraulic system compatibility with adjustable holding points. Front, rear, or combined mounting options are available.
• Cutting Height Adjustment: Rough adjustment via scanning roller; fine adjustment via top link. Some models offer multiple cutting height settings.
• Lateral Displacement: Mechanical or hydraulic lateral displacement options allow mowing in difficult-to-access areas such as under trees or near fences. Displacement ranges from 0.45 m to 0.60 m depending on model.
• Flail Shafts and Flails: Standard flails weigh approximately 2 kg, made of spring steel, loosely hooked and secured by screws. Centrifugal force positions flails during operation, allowing them to move backward when hitting obstacles. Optional heavy free-floating flails are available for tougher vegetation and shrubs.
• Drive and Power: PTO shaft speeds typically 540 rpm, with optional 1000 rpm for some models. Power requirements range from 13 kW (18 HP) for smaller models up to 140 kW (190 HP) for larger machines.
• Ground Adjustment and Mobility: Rollers mounted across the entire mowing width ensure good ground following on uneven terrain. Some models can be fitted with wheels for level terrain. Attachment frames on larger models include built-in joints and rear suspension for smooth operation.

3. Application and Usage

• Suitable for mowing all types of grass, including reeds, sedges, thorny bushes, shrubs up to 4 cm diameter, and old grass.
• Applicable in agriculture, pomology, viticulture, roadside and path maintenance, sports fields, recreation grounds, shooting ranges, and airfields.
• Special features like mulching baskets help collect mowed material, reducing pathogen and parasite spread in animal pastures.
• Robust construction ensures insensitivity to foreign bodies such as stones, iron parts, and wood debris.

4. Additional Equipment and Options

• Baskets for collecting mowed material, hydraulically emptied.
• Ground relieving springs for front attachments to reduce support weight by up to 50%.
• Impact rails for additional shredding of mulch material.
• Hydraulic lateral displacement and mechanical lateral adjustment options.
• Hydraulic drive options on some models.

5. Technical Data Summary

The document includes a comprehensive table summarizing key technical data for each model, including working width, total and transport width, power requirements, weight, PTO shaft speed, area output, linkage category, number of flails, front attachment options, lateral displacement capability, basket availability, and ground adjustment type.

Example data points:

• UMT 10: 1.00 m working width, 13 kW power, 310 kg weight, 540 rpm PTO, 0.45 m lateral displacement (mechanical), roller ground adjustment.
• UMK 21: 2.10 m working width, 37 kW power, 650 kg weight, 540 rpm PTO, 0.60 m lateral displacement, roller ground adjustment.
• UM 40: 4.00 m working width, 140 kW power, 1600 kg weight, 1000 rpm PTO, no lateral displacement, roller ground adjustment.
• GFM 740: 7.40 m working width, 4500 kg weight, 1000 rpm PTO, roller ground adjustment.

6. Manufacturer Information

Gerhard Dücker GmbH & Co. KG, located in Stadtlohn, Germany, specializes in technology for environmental landscape maintenance and agriculture. Contact details and website are provided for further inquiries.

Critical Information and Recommendations

• Choose mower model based on tractor power and working width requirements.
• Consider lateral displacement options for mowing in restricted or uneven areas.
• Use heavy free-floating flails for tougher vegetation and shrubbery.
• Utilize baskets to reduce pathogen spread in animal pastures.
• Adjust cutting height carefully using roller and top link for optimal mowing results.
• Ensure PTO shaft speed compatibility with tractor specifications.