Description
This kit is available for John Deere 50, 60 and 90 series openers and comes complete to replace the pin, 2 x outer bushings and the thrust washer.
General Specifications
1 x Main Opener Arm Pin (1.25” OD x 5.50” – replaces JD part number N282536)
2 x Outer Bushings (1.25” ID x 1.63” OD – replaces JD part number N283636)
1 x Grade 8 Thrust Washer (1.3” ID x 2.5” OD x 0.16” thick* – replaces JD part number N216568)
* Exact dimensions may vary with supplier of the heavy duty grade 8 thrust washer.
Detailed Specifications
- The Needham Ag main opener arm pins and bushings were field tested for over three years, on drills and air-seeders which planted high amounts of acres per row, before we released them in 2018. We have found their service life significantly exceeds OEM pins and bushings, which isn’t surprising, because the pins are at least 15 points higher on the Rockwell C scale compared side by side with the John Deere main opener arm pins.
- The Needham Ag main opener arm pins are precision ground to 5/1000″ for maximum concentricity.
- Each pin features a taper on each end to aid in with its installation. This is especially helpful when trying to install the pins when the openers are still mounted to the drill or air-seeder. The OEM and other after market pins are almost flat on the ends and more difficult to align during installation.
- Our main opener arm pins feature a socket on both ends, to aid with their install and removal. OEM and aftermarket pins are smooth on the ends and are more difficult to drive out (or install) with a punch or air-hammer.
- Our high quality hardened and heat treated outer bushings provide a very long service life compared to the John Deere OEM powdered metal outer bushings, and they are easy to install with our install tool.
- The Needham Ag install tool is made of hardened steel. It helps remove the old bushings and install the new ones without damage, plus helps align the second bushing with the first one during installation. We do recommend using a good air-hammer with a 1/2″ diameter punch.
- We also supply one Grade 8 thrust washer per row, to help eliminate all the side to side play in the opener mounting points, which is very important. Both sides of the castings wear over time, so be sure to shim the opener arm as tight as possible (on the disc side) with the washer provided, or the washer provided AND the existing washer (if the arms have a lot of acres on them and a significant amount of wear).
NOTE: One free main opener arm install tool (worth $90) will be included free with all orders of 24 (or more) main opener arm bushing kits.
For additional information on installation of the Needham Ag Main Opener Arm Bushing Kits, please see the YouTube video below.
