Knotter Pinion 700728783 Replacement Knotter Assembly Part For Massey Ferguson MF2150 & Challenger LB34BXD Baler
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Basic Properties
Trading Properties
In short: Knotter Pinion 700728783 is a knotter system component that forms and ties the knot at the end of each bale for Massey Ferguson MF2150 & Challenger LB34BXD large square balers. Aftermarket replacement, 1 1 piece minimum order, T/T payment, 7-15 days delivery.

Part 700728783 is a knotter system component that forms and ties the knot at the end of each bale. It is listed for Massey Ferguson and Challenger large square balers and is supplied as an aftermarket replacement matched to reference number 700728783.
In service it belongs to the knotter and needle group of components. The knotter stack on a square baler is a timed mechanism: needles lift the twine, bill hooks rotate, and the knot is cut and released within one cycle. Every part in that chain depends on the others being in tolerance, which is why wear here rarely stays local for long. Dealers usually hold it together with the related parts that wear in the same area, so a repair is not delayed waiting for a small component.
Key features- Profile and timing surfaces matched to the original so the knotter cycle stays in sequence.
- Wear surfaces hardened for the repeated cycling of the knotter stack.
- Replaceable as a single item, with the mounting faces ready for direct installation.
- Fits Massey Ferguson MF2150. See the compatibility table for the full list of machines.
- Packed with rust preventive protection and labelled with the reference number for easy receiving checks.
- Minimum order one 1 piece, payment by T/T, standard delivery 7-15 days.
| AGCO Part No. | 700728783 |
|---|---|
| Description (EN) | Knotter Pinion |
| Part Type | Knotters & Needles |
| Unit | 1 piece |
| Net Weight | 0.15 kg |
| Place of Origin | China |
| Minimum Order | 1 1 piece |
| Payment Terms | T/T |
| Delivery Time | 7-15 days |
| Supply Ability | 500 pieces per month |
| Packing | Carton with rust preventive wrap, palletised for export |
| Brand | Machine models |
|---|---|
| Massey Ferguson | MF2150, MF2170, MF2170XD, MF2270, MF2270XD, MF2250, MF2290 |
| Challenger | LB34BXD, 2270XD, CHLB34, CHLB44B, CHLB34B |
- Check needle timing and knotter brake action after fitting any knotter part.
- Confirm the twine path is clear and the twine discs grip evenly.
- Inspect the neighbouring parts in the same cycle, since a worn arm or anvil is often what caused the failure.
- Run a few bales and check knot quality on both sides of the bale before full field work.
- Keep the knotter area clean; packed chaff is a common cause of repeat missed ties.
A: 700728783 is listed for Massey Ferguson: MF2150, MF2170, MF2170XD, MF2270, MF2270XD, MF2250, MF2290; Challenger: LB34BXD, 2270XD, CHLB34, CHLB44B, CHLB34B. Confirm your model and serial range with us if the machine has been repaired before with non standard parts.
A: No. It is an aftermarket replacement manufactured to fit machines that use reference 700728783. It is supplied as a cost effective alternative for maintenance and repair work.
A: It is a knotter system component that forms and ties the knot at the end of each bale. The knotter stack on a square baler is a timed mechanism: needles lift the twine, bill hooks rotate, and the knot is cut and released within one cycle. Every part in that chain depends on the others being in tolerance, which is why wear here rarely stays local for long.
A: Send us your machine model, serial range and a photo of the existing part. We check the reference number and the visual details against the listing before you commit to an order.
A: Minimum order is one 1 piece, payment by T/T, delivery normally 7-15 days after payment confirmation, with supply capacity of around 500 pieces per month.
A: If the failure is wear of this component, yes. If timing or twine tension is out of adjustment, that has to be set as well, so check the whole knotter cycle when fitting.
Send us your part number, machine model and quantity, and we will confirm price, packing and lead time. Mixed orders combining this knotter assembly part with knotter parts, needles, knives and feeder dogs from the same machine family can be consolidated into one shipment.