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Sealing type overview for standard program

FKL offers economic and space-saving solution. Bearings can have shields or seals at one or both sides. Those which are sealed at both sides are supplied with grease and are generally maintenance-free. Sealed bearings are generally in application where a sufficiently effective external seal cannot be provided, due to inadequate space or cost effectiveness. Bearings fitted with shields are applied where the possibility of foreign matter ingression is low and no danger of water, steam etc. coming in contact with the bearing, or where the freedom of friction of these non-contact seals is important because of the speed or operating temperature of the bearing. Bearing fitted with contact seals are preferred in application where contamination is moderate and where dampness, water, steam etc. may occur, or where a long exploitation life without maintenance is required.

Bearing sealing

sealing

Fig. 1 Sealing 2Z
Non-contact sealing with Steel sheet shield of simple and cheap make. Grease prevents penetration of rough impurities. Allows the highest speeds. It is used with the deep groove ball bearings.

sealing

Fig. 2 Sealing 2RS
The older type of the single seal. Prevents penetration of soil, dust and water and since exposed to the impact of abrasive particles is expendable more than some new types of seals. Due to extended friction, the permitted speeds are lower. It was gradually replaced with the improved versions of (2S). Because of the traditional reasons Y bearings with this kind of seal do not have the additional sealing mark. It is used with the Y-bearings and deep groove ball bearings.

sealing

Fig. 3 Sealing 2S
Single seal with the labyrinth between the sheet part and the rubber lip which conducts the contact sealing. The friction and speeds are the same as with 2RS but provides much better protection against the rough impurity particles. This is very good sealing system: the sheet part protects the seal from the soil, dust and rough particles. At the same time makes the labyrinth with the rubber part. The rubber part provides contact sealing which prevents penetration of finer impurities, water, moisture, steam etc. Suitable for neutral conditions because of the presence of the foreign materials. It is used with the Y bearing (standard) and deep groove ball bearings.

sealing

Fig. 4 Sealing 2F
Dual sealing, protection cover placed on the inner ring protects against rough impurity particles and makes the labyrinth with the sheet part of the seal; then the sealing 2S type, with the labyrinth between the sheet part and the rubber lip that conducts the contact sealing. The friction and speeds are the same as with 2S but has much better protection against rough impurity particles. It is very good sealing system: the sheet part protects the seal from the soil, dust and rough particles. At the same time makes the labyrinth with the rubber part. The rubber part provides the contact sealing that prevents the penetration of the finer impurities, water, moisture, steam etc. Suitable for heavier conditions due to better protection against foreign matters. It is used with the Y bearings (standard).

sealing

Fig. 5 Sealing 2T
By construction is the same as 2S, except rubber lip is tripled. Therefore, it seals better but has even larger friction. The permitted speeds are much lower, up to 500 rpm. It emerges out of external ring width and is applied only with special bearings for the agricultural machines (practically standard sealing for the disc harrow bearings) and to the less extent, Y - bearing program (delivery is made according to special request). Additional protection provided by metal-sheet cap is also available (designation 2TC).

sealing

Fig. 6 Sealing 2TB
Dual sealing, combination 2T and stronger protection steel. Friction and speeds are the same as 2T, but considerably better protection against rough dirt. This type of sealing is applied in agricultural machinery. Protection steel protects from soil, dust, rough dirt and mechanical impact on the seal. Triple-lips seal performs contact sealing that prevents penetration of finer dirt, water, damp etc. Suitable for difficult working conditions with aggressive presence of foreign matter. Used with Y bearing units 2TB.

sealing

Fig. 7 Sealing 2P
By construction is the similar as 2T, except rubber lip is fivefold. Therefore, it seals better but has even larger friction. The permitted speeds are much lower, up to 500 rpm. It emerges out of external ring width and is applied only with special bearings for the agricultural machines (practically standard sealing for the disc harrow bearings) and to the less extent, Y - bearing program (delivery is made according to special request). Additional protection provided by metal-sheet cap is also available (designation 2PC).

sealing

Fig. 8 Sealing 2PB
Dual sealing, combination 2P and stronger protection steel. Friction and speeds are the same as 2P, but considerably better protection against rough dirt. This type of sealing is applied in agricultural machinery. Protection steel protects from soil, dust, rough dirt and mechanical impact on the seal. Five lip seal performs contact sealing that prevents penetration of finer dirt, water, damp etc. Suitable for difficult working conditions with aggressive presence of foreign matter. Used with Y bearing units according to special request.

sealing

Fig. 9 Sealing TDT
Additional metal cover with thickness of 1 mm provides reliable mechanical protection. Unique combination of six-lip sealing, double 3 lip sealing protects bearing from the outer side, one 3 lip sealing protects bearing from inner side. This presents today the best sealing system for application in agricultural machinery.

sealing

Fig. 10 Dirtblock Sealing
Designed for hard working condition at unfriendly environment. Half metal - half rubber outside diameter provides reliable seal retention in the bore and improves sealing performance. Inside diameter is covered by rubber and improves sealing performance and easy installation. This sealing provides maximum protection against liquid or solid contaminants, which significantly extends bearing service life.