Kuhn 4321 GM

Kuhn 4321  GM Product Photo
Feature Overview
Kuhn 4321 GM
Meeting the Challenge of Varying Field ConditionsThe KUHN GA single-rotor mounted and trailed rotary rakes are designed to meet the needs of hay producers who demand higher productivity, while they increase the quality of their hay and forage crops. Large, well-formed windrows promote faster drying, enabling producers to harvest crops at their peak nutritional value with less reliance on the weather. Drive components are protected from debris in the fully enclosed,... View full info for more.
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Meeting the Challenge of Varying Field Conditions

The KUHN GA single-rotor mounted and trailed rotary rakes are designed to meet the needs of hay producers who demand higher productivity, while they increase the quality of their hay and forage crops. Large, well-formed windrows promote faster drying, enabling producers to harvest crops at their peak nutritional value with less reliance on the weather.

Drive components are protected from debris in the fully enclosed, heavy-duty, double reduction Masterdrive® gearbox which requires minimal maintenance. The pivoting headstock, on the GA 4121 GM and GA 4321 GM mounted models, ensures maneuverability, improved terrain following, raking quality and consistent windrow shape. While the simple clevis hitch, on the GA 4220 TH and GA 4221 GTH trailed models, allows you to quickly hookup and go. Tangential, double-curved tine arms allow these rakes to work at various speeds, while still gently raking, assuring raking quality. Since the tines do not normally contact the soil, there is less opportunity for contaminants to enter the windrow, resulting in higher forage quality.

Features may include:

Masterdrive® Gearbox

The KUHN exclusive Masterdrive double-reduction gearbox is designed for all types of crops, larger rotors, and demanding conditions. The fully enclosed Masterdrive double-reduction gearbox incorporates a two-stage reduction drive for increased durability and reliability with a longer service life and lower power requirement. The large gears and gear teeth are meshed together with tight clearances to minimize wear and provide the best overall power transmission for maximum efficiency.

Double-Curved Tine Arms

Double-curved tine arms are designed to form fluffy and straight windrows for superior raking quality at high speeds. Fluffy windrows allow more air movement through the crop promoting fast and uniform drying!

KUHN rotary rakes achieve this by following two basic principles for ideal windrow formation. First, the tine arms maintain a positive forward position right up to the point where the forage is delivered to the windrow ensuring gentle crop handling and minimal ash incorporation. Second, a steep cam track allows the tines to be raised very quickly to provide additional clearance over the windrow.

Right-Hand Delivery

For maximum operator efficiency and comfort, right-hand delivery is ideal. All KUHN single-rotor rakes above a 13’ working width feature right-hand delivery as standard due to the double-reduction Masterdrive® gearbox. You can monitor raking quality and make adjustments at the same time with both the windrow and tractor controls conveniently located on the right side.

Narrow Transport Width

Road transport can be accomplished with complete peace of mind – simply store the tine arms in the convenient rack at the front of the machine and fold up the guards vertically. Lighting and turn signals are also standard for maximum safety. (Tine arm removal not possible on GA 4220 TH)

Spring Design

The right guard and windrow deflector can be easily raised and lowered with the assistance of the convenient spring design.

Swath Curtain Adjustment

A parallelogram linkage simultaneously moves the swath curtain to the rear as it is extended. This improves windrow formation and placement by ensuring the curtain is always in the proper position relative to the crop.

Key Features
  • 2019
  • Kuhn
  • GA GM/TH/GTH/GM
  • 4321 GM
  • Rotary Rake
  • 540 | Minimum power: 30 HP (22 kW)
  • Fully enclosed: Masterdrive GI
  • 16 X 6.5-8 PR super-balloon
  • Cat. 2
  • includes windrow: 13'9" (4.2 m)
  • Clean swept: 9'7" (2.9 m)
  • with arms removed: 6'5" (2.0 m)
  • lift under tines: >24" (61 cm)
  • 11'1" (3.4 m)
  • Machine net approx: 1,547 lbs (702 kg)
  • Inf. gross total: 1,642 lbs (745 kg)
  • Foldable guards: Standard
  • Double curved tangential mounted tine arms: Standard | Number of tine arms: 12 | Removable tine arms: Standard | Tandem axles: Standard
  • Stabilizer: Standard
  • Number of tines per tine arm: 4
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