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Model Specifications


3820 PCD™ General Specifications

The 3820 ParaLink Coulter Drill™ is available in 30, 40, 50, 60 and 70 foot working widths.

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Model 3820-30 3820-40 3820-50 3820-60 3820-70
No. of Sections 3 3 5 5 5
No. of Rows 2 2 2 2 2
Transport Widths 16'0" 20'5" 20'5 19'10" 22'6"
Transport Height (max) 13'1" 15'1" 14'0" 17'5" 18'7"
Tires - Hi Flotation Option
     Main Frame Front N/A N/A N/A 800/65 R32 (2) 800/65 R32 (2)
     Main Frame Rear N/A N/A 16.5x16.1FI (4) 16.5x16.1FI (4) 16.5x16.1FI (4)
     Inner Wing Front N/A N/A N/A 540/65 R24 (4) 540/65 R24 (4)
     Inner Wing Rear N/A N/A N/A 16.5x16.1FI (4) 16.5x16.1FI (4)
     Outer Wing Front N/A N/A N/A 540/65 R24 (4) 540/65 R24 (4)
     Outer Wing Rear N/A N/A N/A 16.5x16.1FI (4) 16.5x16.1FI (4)
Tires, Non Hi Flotation Option
     Main Frame Front 13.5x15FI (4) 13.5x15FI (4) 16.5x16.1FI (4) 16.5x16.1FI (4) N/A
     Main Frame Rear 13.5x15FI (2) 13.5x15FI (4) 13.5x15FI (4) 13.5x15FI (4) N/A
     Inner Wing Front 11.5x15FI (2) 13.5x15FI (4) 13.5x15FI (4) 13.5x15FI (4) N/A
     Inner Wing Rear 11.5x15FI (2) 13.5x15FI (4) 13.5x15FI (4) 13.5x15FI (4) N/A
     Outer Wing Front N/A N/A 13.5x15FI (4) 13.5x15FI (4) N/A
     Outer Wing Rear N/A N/A 13.5x15FI (4) 13.5x15FI (4) N/A
     HF Center Only Option N/A N/A N/A Yes Yes
Weight (lb)**
     7.5" sp. w/ MRBs N/A 39,000 52,000 N/A N/A
     7.5" sp. w/o MRBs 25,300 32,500 43,600 49,000 N/A
    10" sp. w/ MRBs 26,200 33,600 45,500 51,000 65,000
    10" sp. w/o MRBs 22,100 28,200 38,400 42,800 55,700
   12" sp. w/ MRBs 23,900 31,000 42,000 47,000 60,100
   12" sp. w/o MRBs 20,300 26,200 35,800 40,000 52,000
Add for Center HF (lb) N/A N/A N/A +5,900 Included
Above
Add for Full HF (lb) N/A N/A N/A +7,750 +1,850

** Estimates Only - with standard running gear.

 

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PCD™ General Specifications


3720 & 3820 Paralink Coulter Drills™

General Specifications apply to both 3720 & 3820 ParaLink Coulter Drills™.

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Feature 3720 PCD 3820 PCD
Opener Row Spacing 7.5", 10" or 12"
Hydraulic Lock Option 15'' (7.5") , 20'' (10"), or 24'' (12")
Trip Assembly Independent depth control with in-cab adjustable trip force
Opener Type ParaLink™ Walking ParaLink™ Row
Packing Force (lb) 70-230 lbs (walking)
100-330 lbs (locked)
90-180 lbs
Opener Depth Adjustment Pin-style, ¼" increments
(4" total adjustment)
Slot-style, ¼" increments
(3½" total adjustment)
Opener Travel +9"/-7" +9"/-11"
Packer Options 4.5" Semi-Pneumatic Double Shoulder
4.5" Semi-Pneumatic Double Offset Shoulder
4.5" Semi-Pneumatic V-Style
4.5" Semi-Pneumatic Double Offset Shoulder
Cleaner/Gauge Wheel Options 3" wide spoked wheel
4.5" wide spoked wheel
3" wide spoked wheel
4.5" wide spoked wheel
Air Kits Single-shoot or Double-Shoot
Blockage Monitors Optical blockage monitors available in single run (1 per manifold)
Row to Row Spacing 66"
Hitch Options Category 4 standard hitch, Category 4 Ball and Socket hitch, or Category 5 Ball & Socket hitch
Safety Chain and Lights Standard
Wing Transport Locks Standard
MRBs® Optional MRB® III, hydraulically actuated
Rear Drop Hitch For pulling liquid or NH3 tanks with optional lower hitch pull points
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General Specifications


3820 Paralink Coulter Drill

  • 3720 & 3820 ParaLink Coulter Drills™

Expand to access detailed product specifications.


  3720 PCD 3820 PCD
Opener Row Spacing 7.5", 10" or 12"
Hydraulic Lock Option 15'' (7.5") , 20'' (10"), or 24'' (12")
Trip Assembly Independent depth control with in-cab adjustable trip force
Opener Type ParaLink™ Walking  ParaLink™ Row
Packing Force (lb)

70-230 (walking configuration)

100-330 (locked configuration)

90-180 
Opener Depth Adjustment

Pin-style, ¼" increments

(4" total adjustment)

Slot-style, ¼" increments
(3½" total adjustment)
Opener Travel +9"/-7" +9"/-11"
Packer Options 4.5" Semi-Pneumatic Double Shoulder
4.5" Semi-Pneumatic Double Offset Shoulder
4.5" Semi-Pneumatic V-Style
4.5" Semi-Pneumatic Double Offset Shoulder
Cleaner/Gauge Wheel Options 3" wide spoked wheel
4.5" wide spoked wheel
3" wide spoked wheel
4.5" wide spoked wheel
Air Kits Single-shoot or Double-Shoot
Blockage Monitors Optical blockage monitors available in single run (1 per manifold)
Row to Row Spacing 66" 66"
Hitch Options Category 4 standard hitch, Category 4 Ball and Socket hitch,
or Category 5 Ball & Socket hitch
Safety Chain and Lights Standard Standard
Wing Transport Locks Standard Standard
MRBs® Optional MRB III hydraulically actuated Optional MRB III hydraulically actuated
Rear Drop Hitch For pulling liquid or NH3 tanks with optional lower hitch pull points
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Hydraulic Requirements


3720 & 3820 Paralink Coulter Drills™

Recommended Flow Requirements

Hydraulic flow requirements are highest when turning on the headlands. The recommended flow allows the seeding system to be raised and lowered within two headlands. It should be noted that the recommended fan requirements are for the maximum operational speed (RPM) of the fan.

 

Minimum Hydraulic Flow Requirements

 
  • Recommended hydraulic flow should provide minimal fan slowdown during headland turns. The openers will take hydraulic flow priority over the fans.
  • If operating at minimum flow requirements, the air seeder fans will drop a minimum of 20% during headland turns. This may require a 3rd headland to allow the openers time to raise and lower.
  • In typical operating conditions one or both fans are operating at less than maximum output levels, which will reduce hydraulic requirements.

 

FLOW REQUIREMENTS MINIMUM GPM RECOMMENDED GPM
DEPTH CIRCUIT (7.5" spacing with MRB) 24 30
7.5" spacing w/o MRB 18 30
10" spacing with MRB 20 30
10" spacing w/o MRB 15 22
12" spacing with MRB 18 25
12" spacing w/o MRB 13 18

 

Pressure Requirements

  • With many tractors, maximum hydraulic flow drops off sharply prior to maximum operating pressure. By setting the tractor to a pressure setting of 3100 psi the hydraulic flow will be near the rated output at the maximum operating pressure.
  • The 3720 & 3820 ParaLink Coulter Drills™ have a minimum and recommended operating pressure of 2500 psi.

Coupler Requirements

  • A ½” coupler is only rated for flow rates of 12 gpm. As flow increases beyond this value, a large pressure drop is created across the couplers which in turn increases pressure requirements. The durability of the ½” couplers can also be compromised when operating at high flow rates.
  • It is recommended to use ¾” couplers on the tractor and implement, as this will greatly reduce the pressure drops and will increase the flow of oil to the fan or opener cylinders.

Air Cart - Hydraulic Requirements

When determining the hydraulic demand of a seeding system, it is critical to include the air cart requirements.

8000 Series Air Cart Specifications 8000 Series Air Cart Specifications
9000 Series Air Cart Specifications 9000 Series Air Cart Specifications
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