Para-Linkage Coulters

Para-Linkage Coulters allow a more consistent placement of nitrogen during application. As the coulter and knives move up and down over uneven terrain, the knife does not rotate like other coulter knives. This, along with the 650 pounds of downforce, allows the knife to stay in the ground at the same depth even in rough or hard soil conditions.

Award-Winning Bushings Make for Less Maintenance

Para-Linkage coulters feature greaseless poly-bushings at all pivot locations to reduce maintenance and fatigue. Similar coulters with traditional bushings require daily greasing of 55 to 222 grease zerks per applicator. Applying grease to a 25 coulter applicator with 2-6 zerks per row can add up to 52 minutes of downtime every day. Since the application window for nitrogen fertilizer is so tight, a slowdown reduces yields and profits.

Poly-bushings are also more durable than traditional bushings, saving farmers time and money. Other coulters use grease on two of the five pivots. One of the remaining pivots has a bronze bushing, while the last two are just metal on metal. This creates more wear and slop in the coulter which leads to a premature and costly repair.

J&M Manufacturing is proud to announce the Para-Linkage coulter design on their NitroGro applicators has won the 2023 Gold manus® award. The design beat out 480 entries across 36 countries. The Para-Linkage design is the first US design to win a manus® award. The biannual award recognizes outstanding examples of plastic bearings being used in real world applications. J&M accepted the award on Wednesday, April 19, 2023, at the Hannover Messe, one of the world's largest industrial trade fairs, in Hannover, Germany.