a pro box seed tender in a field

SpeedTender™ Pro 251 | 451 Pro Box Seed Tenders

from above a grain cart showing the straight auger design and forward reach

Introducing the new J&M SpeedTender Pro™ 251 & 451 models. Both the 251 & 451 are designed to provide greater seed protection and improve performance. The new models are equipped with a poly-cupped auger and patent pending "Bottom-Less Pit" auger design. This industry exclusive combination has proven to be gentle on your seed for minimum damage and maximum germination results.

The 251 & 451 models also feature steep slopes for a quick and complete unload. Each chute has an initial 45° slope that quickly funnels seed from the pro-box to the steep 32° sloped chute to deliver seed to the unload auger. The tall 16'-4" auger height allows you to easily fill your bulk seed tank, while the 3-stage telescoping spout enables you to reach the widest planter box. The low 4'-2" deck height makes loading and unloading boxes safe and easy. While planting season doesn’t always go as expected, you can trust the J&M line of seed tenders to deliver your seed fast and gently to increase your efficiency and profitability.

Industry Exclusive "Bottom-less Pit" Auger Design

Significantly Minimize Seed Damage

The Bottom-less Pit auger minimizes seed damage by positioning the intake area above the bottom of the auger to create a safe zone for seed that may not be initially transported up the auger. This safe zone allows the seed to avoid the bottom of the auger where grinding and cracking occurs before moving up the auger to be unloaded. Through extensive testing, the intake area is precisely placed to minimize seed damage and rival the performance found with more expensive round tube belt conveyor designs.

Low Deck Height

Safe & Easy Loading of Boxes

a 3/4 view of a 451 pro box seed tender showing the low deck height

The J&M SpeedTender™ Pro 251 and 451 both feature a low deck height of 4'-2". This design gives the J&M SpeedTender Pro a superior center of gravity and more stability during transport on uneven ground. The lower deck height allows the boxes to be loaded and unloaded at a safer and easier height.

Poly-Cupped Auger

Efficient & Gentle

The poly-cup interior flighting is cup shaped to gently and quickly carry the seed up the auger. In addition, the outer tube and flighting diameters are correctly sized to prevent seed from getting caught against the tube and cracking.

This design, in combination with the Bottom-less Pit, virtually eliminates the chance of cracking seed and gives you optimal performance for maximum germination rates when planting. This auger design rivals the performance of a typical round belt conveyor design, but without the inflated price tag.

a section of the poly-cupped auger showing the cup shaped flighting that gently carries seed up the auger

Speedtender ProMore Features

showing the chute design that angles at 45 degrees

SpeedTender Pro 251 & 451 feature steep slopes for a quick and complete unload. Each chute has an initial 45° slope that quickly funnels seed from the pro box to the steep 32° sloped chute to deliver seed to the unload auger.

a close up of a vertical auger with reinforced flighting

The engine is conveniently placed out in the open for easy access. You can rest assured knowing the 13 hp engine will keep your SpeedTender™ Pro 251 or 451 working when you need it.

computer drawing of the front and rear slopes of a grain cart that promote excellent cleanout

Trouble-free guide plates make for quick and easy loading and unloading. The guide plates ensure your containers are always centered when changing out your seed boxes.

a yellow wired remote control.

Four function standard wired remote controls:

  • Starts/Stops Conveyor
  • Raises/Lowers Conveyor
  • Opens/Closes Doors
  • Swings Conveyor Side-to-Side

Miscellaneous Features

  • Reversible auger switch for complete cleanout
  • Two (2) 7,000 lb torsion flex axles (SpeedTender Pro 251)
  • Two (2) 5,200 lb torsion flex axles (SpeedTender Pro 451)
  • Powder coated exterior finish
  • Easy access cleanout door
  • Stone guards
  • LED work light for night time unloading
  • Quick latches
  • 2-Button wired controller
  • ABS chute covers
stone guards for the front lights on the seed tender trailer
stone guards for the front lights on the seed tender trailer
stone guards for the front lights on the seed tender trailer
stone guards for the front lights on the seed tender trailer

Speedtender ProOptions

Electronic Weigh System

an intercomp scale head for the SpeedTender pro box seed tender

J&M scale systems allow you to precisely fill your planters. The scales for the SpeedTender Pro 251 & 451 offer an Intercomp LD720 monitor with bin tracking capabilities.

Learn more about this scale system

Wireless Controls

Turn your auger on and off and fold and unfold your auger wirelessly wirelessly with a 2‑function wireless remote (Lundell) in place of the standard wired control.

a 3/4 view of a 451 pro box seed tender showing the low deck height

Talc Applicator

Digi-Star GT 400 Grain Cart Scale Indicator

An optional talc applicator helps your seed flow smoothly and saves you time and money.

Miscellaneous Options

  • Choose from A-frame, gooseneck, or trailer mount options to fit your towing vehicle
  • Hydraulic jack in place of standard manual jack
  • Four (4) 16" aluminum wheels in place of standard wheels (SpeedTender Pro 451 only)
  • 3-stage telescoping spout or 36" rubber spout
  • Spare tire and wheel
  • Vinyl sock for end of telescoping spout

SpeedTender Pro Specs

SpeedTender Pro 251 SpeedTender Pro 451
Capacity Two (2), 50 Unit Boxes Four (4), 50 Unit Boxes
Weight (Empty) 2,850 lbs 3,786 lbs
Tongue Weight (Empty) 650 lbs 1,400 lbs
Auger Height 16"-0" 16"-0"
Unloading Rate 4 Minutes per Box 4 Minutes per Box
Auger Reach 42' (with Optional 24' Spout) 42' (with Optional 24' Spout)
Axles Two (2), 5,200lbs Torsion-Flex Axles Two (2), 7,000lbs Torsion-Flex Axles
Electric Brakes Yes Yes
Engine 13 hp Honda Motor with Electric Start 13 hp Honda Motor with Electric Start
*Measured with soybeans at 140,000 seeds per unit weighing 45 lbs.

Dimensions

dimensions diagram of the 251 and 451 pro box seed tenders with labeled dimensions A-H

Download Trailer Mount Dimensions

SpeedTender Pro 251 SpeedTender Pro 451
A 16'-4" 16'-4"
B 21'-3" 21'-3"
C 4'-11½" 4'-11½"
D 4'-2" 4'-2"
E 8'-4" 8'-4"
F 9'-3" 9'-3"
G 12'-1" 12'-1"
H 13'-0" 16'-10"

Documents

Go to Seed Tender Comparison Page

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a 451 pro box next to a field filling a row box planter