Grain Cart Scale Kits

Find your cartMake and model, then the running gear: single axle, walking tandem or tracks. That is what decides the kit.
We size the barsHitch and axle sizes come from our own build records, not a catalogue. If we are not sure, we call you before anything ships.
Calibrated and shippedBolt it on yourself with our install guides, or have your dealer do it. A person here answers when you call.

On the cart

What a finished kit looks like

Tap any photo to see it up close.

Red grain cart with a red-digit scoreboard mounted on the side of the bin — A finished cart, with an optional scoreboard on the bin you can read from the tractor or the truck.

Axle weigh bar fitted in place of the spindle on a green grain cart, cable clipped along the axle — **Axle weigh bar**Goes in where the spindle was. Cable runs along the axle.

Junction box mounted on the cart with each weigh bar cable plugged in — **Junction box**Every bar plugs in here, one cable runs to the indicator.

Weigh-Tronix 660 indicator mounted at the top of a cab windshield — **660 in the cab**Big digits where the operator can see them.

Libra Harvest app showing the cart weight on a phone — **Or Libra on your phone**Weight and every load recorded on an iPad or phone.

List prices

Pick your kit

Running gear sets the kit; the indicator sets the price. Freight is extra and quoted to your address. We confirm the final price on your quote, and nothing is owed until you say go.

Kit	Weigh-Tronix 660	Libra Cart M0018	Bars only
3-point, 3-3/4" axlesSingle axle, most carts	$4,650	$6,950	$4,100
5-point with axlesWalking tandem	$7,400	$9,700	$6,850
5-point on frame (tracks)Tracked carts, weighed on the frame	$4,950	$7,250	$4,400
3-point, 4-1/2" axlesSingle axle, heavy 4-1/2" spindles	$5,850	$8,150	$5,300

Libra Cart M0014 kits are $1,500 over the 660 while our stock lasts. Build your kit to see the price for your exact cart.

The brain of the kit

Choose your indicator

Avery Weigh-Tronix 660

A dedicated scale head. Holds a steady reading while the cart moves, with gross, tare, net and load totals.

Kits from $4,650

Records every load

Libra Cart M0018

Weights on your own phone or tablet in the free Libra Harvest app, every unload recorded. Serial Link built in for a scoreboard or John Deere WeighShare.

Kits from $6,950 · More on Libra Cart

Weigh bars only

For a cart that already has an indicator you want to keep.

From $4,100

A grain cart scale kit laid out: axle spacers, axle weigh bars, hitch spacer, hitch weigh bar, cast iron hitch, junction box and indicator

In the box

What ships in a kit

Axle weigh bars replace your spindles, with spacers to match your hub.
Hitch weigh bar with a cast iron hitch, sized to your tongue.
Junction box and cables, sealed for wash-downs and rain.
Your indicator, set up and calibrated to your cart before it leaves Central City.

Install and troubleshooting guides

Add-ons

Make it work for the whole crew

Scoreboard displayA large LED readout the truck driver can see from the cab.
John Deere WeighShareCart weights on your John Deere display. The display-side cable comes from John Deere.
Thermal printerPrints a ticket with time, date and weight for every load (660 indicator).
Moisture sensorMoisture with every load, alongside the weight in Libra Harvest.

Why weigh at the cart

Know where every bushel went

Proof of yield for crop insurance. Field and load records make Average Production History paperwork simple.
Compare hybrids side by side with field-by-field totals, not guesses.
Calibrate your yield monitor against real weights for yield maps you can trust.
Settle up with the elevator and the trucks with a load-by-load record.

268 carts on file

Carts we make kits for

Pick yours to build the kit. Not listed? We probably still make it. Tell us about your cart.

Brent61

57L 320 410 420 450 470 472 474 520 570 572 574 576 610 620 640M 670 672 674 678 770 772 774 776 780 782 874 876 880 882 884 920 970 974 976 1050 1080 1082 1084 1094 1100 1182 1186 1194 1196 1282 1292 1386 1394 1396 1500 1594 1596 4250 V700 V1000 V1100 V1300 V-800 V-1000 V-8000

J&M50

115 375 435 450 475 500 525 575 620 650 675 750 810 812 875 910 1000GRA 1050 1051 1075 1107 1108 1110 1111 1115 1120 1121 1122 1130 1131 1132 1150 1151 1220 1221 1222 1250 1311 1312 1325 1326 1400 1401 1410 1411 1412 1500 1520 1521 1522

Parker30

450 500 510 514 524 614 624 675 685 710 727 736 737 739 810 838 839 842 938 939 1038 1039 1042 1048 1139 1142 1154 1348 1354 1500

Unverferth30

565 650 725 750 850 900 1060 1080 1100 1110 1110R 1115 1117 1160 1175 1196 1315 1317 4900 5000 5225 6225 7000 7200 7250 8000 8250 9200 9250 ER1110

Killbros25

110 175 470 475 490 575 590 690 835 1111 1150 1160 1170 1175 1180 1185 1311 1400 1600 1750 1800 1810 1820 1950 AWT27

Kinze17

400 440 450 600 640 650 800 840 850 850S 900 1040 1050 1051 1100 1500 R640

Demco13

550 650 750 800 850 900 950 1050 1100 1102 1150 1150S 1250

Orthman10

540 608 767 796 797 810 897 996 1010 1096

Oxbo7

1512 1514 1516 3518 3521 3524 W1540

A&L6

425 500 700 705 708 F700

EZ-Trail4

Brandt3

Frontier3

Crust Buster2

Ficklin2

Richardton2

Sunflower2

M&W1

Questions

Before you order

Can I install it myself?

Yes. The kit is sized to your cart and calibrated before it ships, and our install guides walk through the bars, hitch and junction box. Call if you get stuck.

My model number is on the list. Is that enough?

Not always. The same model can ship on a single axle, a walking tandem or tracks, and each takes a different kit. The kit builder asks for your running gear, and we confirm sizes before anything ships.

What if my cart is not listed?

We have fitted bars to carts for over fifty years, including older carts never built for a scale. Send us the make, model, year and a photo of the axle and hitch, and we will size it.

Can I keep the indicator I already have?

Often, yes. Choose weigh bars only and tell us what indicator you run.

What does freight cost?

It depends on where you are. We quote it to your address on the quote, before you commit to anything.

Weigh every load. Sized to your cart.