ID # 18997542

Unverferth Equipment Seed Pro® Bulk Box Tender

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Unverferth Seed Tenders

The Unverferth Seed Pro® bulk box tender not only delivers seed directly to your planter or drill, you can position it 90 degrees to the unit for conveying between two other sources. The model 400 easily carries four 50 seed unit boxes and the model 200 holds two boxes.

For optimum transport safety, standard equipment heavy-duty double-axle undercarriage features lighting, reflective striping, transport chains and brakes.


Seed Pro® Bulk Box Tender
Sale Type

Faster & Gentler!

  • The new, patented 5-ply rubber conveyor belt design features offset rows of cupped cleats to minimize seed damage while providing a greater carrying capacity:
    • Filling a larger, central fill planter or drill?  The 8” conveyor features an unloading speed of up to 35 bushels per minute
    • Filling individual planter or drill boxes?  Do it with precise control with the 6” conveyor featuring unloading speeds up to 16 bushels per minute
  • Smooth-Start conveyor engagement gently brings the conveyor belt up to maximum speed to increase belt life
  • Electronic speed control module allows the operator to adjust the speed of the conveyor belt independently from the engine
  • All models are standard with two downspouts:
    • 4' flex spout ideal for filling central fill planters or drills
    • 2-Stage downspout ideal for filling individual planter boxes
  • Tool-free removable belt access cover allows you to easily determine belt tension
  • The redesigned over-center hopper lock with larger rubber hopper intake increases seed flow
  • Standard canvas hopper cover with elastic band holds tightly around the hopper opening to safeguard contents

Patented Design

  • The conveyor features a patented design which allows the operator to swing it out 90 degrees parallel to the tender to transfer material between two wagons, semis or other containers
  • Conveyor spring-lift assist for added ease when positioning the conveyor into parallel position
  • Model 410XL features a 21' long conveyor measured from top to bottom bearing and a max unloading height of 13’6”
  • Models 410 and 210 feature an 18' long conveyor measured from top to bottom bearing and a max unloading height of 12’
  • Cleaning out seed between varieties is a breeze using the tool-free removable hinged door at the bottom of the conveyor
  • Standard 2-function wired remote controls conveyor on/off and raise/lower
  • Hydraulically operated vertical height adjustment allows you to quickly position the conveyor where you need it:
    • Model 410XL = 52 inches of adjustment
    • Model 410 = 41 inches of adjustment
    • Model 210 = 50 inches of adjustment
  • The conveyor can be positioned in the rear or swung 180 degrees to the front for road transport
  • Conveyor arm locking mechanism allows you to quickly and conveniently lock or unlock the conveyor from the pivot arm
  • Stainless-steel conveyor rollers and turntable plates provide maximum durability and 3/4” locking increments stops the end of the conveyor every 10” for added versatility

Seed Protection

  • Protecting your investment is important to you and the 10-Series Seed Pro bulk box tenders are designed to handle seed with the greatest care:
    • The conveyor inlet features patented side seals and a brush-seal-brush design to prevent seed from back feeding into the hopper and minimizing seed damage
    • The new extended-length rounded conveyor hood is rubber lined for enhanced seed flow and protection
    • A top-mounted, 6 cubic inch hydraulic motor pulls the belt forward, keeping it tight for the most efficient and gentlest seed movement

Pro Box Handling

  • Models 410XL and 410 can carry up to four 50 lb. seed pro boxes (200 seed units)
  • Model 210 can carry up to two 50 lb. seed pro boxes (100 seed units)
  • Dual compartment unloading chutes for handling multiple seed varieties
  • Protective lids cover the unloading chutes when not in use to keep out moisture and debris
  • Easy-to-use heavy-duty steel hinge latches with locks securely fasten pro boxes to the platform
  • Oversized unloading doors maximize seed flow into the intake conveyor
    • 5" x 6" wheel-operated doors and a regulating baffle direct seed into the conveyor intake for increased unloading efficiency
  • Two viewing windows in the unloading chute allow you to easily monitor seed flow during unloading
  • Large engine control box is located at the front left of hte seed tender for operator convenience
  • 390 cc (13 HP) Honda® gas engine with electric start and conveniently located controls
  • Two-part urethane enamel finish on the platform provides a long-lasting finish

Durability is Standard

  • 10-Series Seed Pro bulk box tenders are manufactured with the highest quality components for unmatched durability
  • Transportation from field to field goes quickly and smoothly with the rugged undercarriage design
  • Models 410XL & 410 feature a tandem design with 7,000 lb. torsion axles
    • 235/85x16 highway rated tires
  • Model 210 features a tandem design with 4,000 lb. torsion axles
    • 225/75x15 highway rated tires
  • All Seed Pro models feature electric brakes on all axles and appropriate lighting for safer highway travel
  • Choose from a gooseneck or bumper pull hitch with 2-5/16” ball to meet your operation’s needs
  • Undercarriage components are powder-coated in a beige color for a rugged and long-lasting finish
  • All models can be ordered less undercarriage for installing on your own trailer
Model 410XL - 4 Seed Boxes 410 - 4 Seed Boxes 210 - 2 Seed Boxes
Overall Length (Conv. Forward) with Bumper Hitch 25'7" 22'11" 21'

with Gooseneck Hitch

23'6" 23'6" N/A
Overall Transport Width 8'6" 8'6" 8'6"
Overall Height to Top of Platform (without boxes) 5'10" 5'10" 5'6"
Overall Height to Top of Seed Boxes (with boxes) 11'1" 11'1" 10'9"
Platform Length 9'9" 9'9" 8'2"
Undercarriage Length 20'6" 18'6" 17'
Hitch to Back of Platform Length 20'9" 18'9" 17'
Undercarriage Deck Heith 1'10" 1'10" 1'10"
Underframe Clearance 1'2" 1'2" 1'2"
Conveyor Height in Transport Position 9'10" 9'3" 8'2"
Height to Top of Conveyor in Transport Position 11'11" 10'10" 10'2"
Conveyor Maximum Unload Height 14'2" 12'8" 12'4"
Conveyor Minimum Unload Height 9'10" 9'3" 8'2"
Conveyor Maximum Side Reach 16'10" 13'3" 13'
Conveyor Minimum Side Reach 14'7" 11'3" 11'
Approximate Empty Weight 5,900 lbs. 5,200 lbs. 3,800 lbs.
Loaded Tongue Weight 1,150 lbs. 1,000 lbs. 700 lbs.
Base Length (Less Undercarriage) 10'6" 10'6" 9'4"
Base Width (Less Undercarriage) 6'11" 6'11" 6'11"
Overall Height (Less Undercarriage) 10'3" 10'3" 9'5"
Reach with Standard 2-Stage Spout 30' (12-row planter) 30' (12-row planter) 30' (12-row planter)
Reach with Optional 3-Stage Spout 40' (16-Row planter) 40' (16-Row planter) 40' (16-Row planter)
Tongue Weight -Loaded (lbs.) 1,150 1,000 700
Hitch Type Std./Opt. 2-5/16" Ball 2-5/16" Ball 2-5/16" Ball
Lighting Connector 7-pin flat 7-pin flat 7-pin flat
Due to continuing improvements in the design and manufacture of Unverferth products, all specifications contained herein are subject to change without notice.