Page 6 of catalogue Bearings for for agricultural engineering of Schaeffler Technologies GmbH & Co. KG

Tillage

and

Sowing

Innovations That are Worthwhile: Individual Solutions ...

the perfect development partner for bearing positions that are subjected to demanding conditions of this sort. One example of this is our compact four-point contact ball bearing specially developed for seed discs, which has proven itself in operation close to the soil. Four Advantages of the Four-Point Contact Ball Bearing • High tilting rigidity • High load carrying capacity • Clearance-free operation • Optimized three-lip Seals, which ensure
Rolling bearings as a cost-reduction factor: Seeders are more cost-effective with durable and low-maintenance system solutions from INA

maintenance-free operation of the bearing position with the maximum grease quantity.

Naturally, Maintenance-free! A Seed Disc Bearing Support from INA More than 100 seed disc bearings can be found in a seeder, depending on the width of the machine. Relubricating these bearings would be an impossible task during the season. The ambient conditions are harsh, for example, fine, abrasive dust particles, aggressive acidic silage effluent, and heavy stony clay soil. This is clearly not a suitable environment for a standard bearing. That’s why a special bearing solution is required – with a particularly effective seal concept. The Schaeffler Group is

One of the seal lips of this seal is arranged in a radial direction on the ground surface of the inner ring, which is protected against corrosion. The other two seal lips are arranged in an axial direction on a protective washer that is pressed on the inner ring. The machined protective washer with anti-corrosion protection is positioned in such a way that a defined gap (labyrinth) is created between the washer and the outer ring. This has the advantage that the seal lips offer excellent protection against damage. This also means that space for an outer grease chamber filled with barrier grease is created.

Top: Four-point contact bearing with high tilting rigidity for seeders Bottom: Angular contact ball bearing with integrated shaft for trailing wheels