Seven lips seal the deal on new bearing

Seven nitrile seals protect the bearings on the new Tillextreme bearing pack, developed by SKF in concert with Great Plains Manufacturing to solve bearing problems with its machines working in the Black Earth region of Russia. | SKF image

SKF and Great Plains Manufacturing have collaborated to design new seals for tillage and seeding equipment.

The Tillxtreme features an un-precedented seven sealing lips to reduce bearing contamination and downtime.

Compared to the previous SKF three-lip seal, Tillxtreme provides 100 percent more contamination exclusion. The new bearing is maintenance free to eliminate daily relubrication, so there’s no grease to purge The design of the housing seat prevents housing wear and prolongs time between rebuilds.

Tillxtreme units are directly interchangeable with standard PEER FD units requiring lubrication. It is not necessary to modify the implement when upgrading to Tillxtreme. It’s a simple bolt-on procedure.

The new unit is designed with 360-degree dynamic misalignment capability

If necessity is the Mother of Invention, then the inventive mother in this situation was Mother Russia, specifically the Black Earth Region. Rodney Hake, engineering manager for Great Plains, describes the soil conditions Great Plains encounters in Russia.

“Chernozemic soil is extremely dense and contains an exceedingly high percentage of humus and organic minerals,” said Hake in an email interview.

“These ingredients create a rich and fertile soil for producing high agricultural yields and is considered some of the best soil in the world for growing grain. Chernozemic soil is dominant in the grassland regions of Canada including the great expanse of the Canadian Prairies.

“In the Black Earth Region, key bearings critical to the operation of tilling equipment were wearing out halfway through the farming season. During analysis by SKF and Great Plains engineering teams, significant dirt pack intrusion was found to be a common issue impacting the function of the bearings and leading to machine downtime.”

Seven nitrile seals protect the bearings on the new Tillextreme bearing pack, developed by SKF in concert with Great Plains Manufacturing to solve bearing problems with their machines working in the Black Earth region of Russia. | SKF image

Engineers from both companies worked together updating the design to include a more robust seal.

SKF redesigned the seal package to incorporate a seven-lip seal intended to eliminate dirt pack between the bearing, housing and spool. By minimizing pressure from the dirt pack against the seals, equipment operates more effectively for a longer life cycle.

The bearing is constructed using a specialized nitrile seal material, which is bonded to a heavy gauge steel shroud. Specialized machines are dedicated to the process of knurling and staking seals to outer ring.

Tillxtreme is available over the counter and is factory-installed in several manufacturers bearing hub components for high-speed tillage, vertical tillage, and seeding applications.

The Tillxtreme product line can be purchased through authorized dealers and directly from the original manufacturers of tillage and seeding machines.

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