Main features:

• Metal outer ring coated or uncoated elastomer.
• Sealing lip equipped with a tension spring. Its function is to guarantee the dynamic and static sealing of the axis, that is, both the axis when rotating and at rest.
• Additional lip for applications where greater security against dust and/or dirt from the outside is required.
• Manufacture according to DIN 3760, other models to be consulted.

Related documents

•   Types of Seals (PDF)

Assembly of radial seals

The allowances indicated by the manufacturer must be strictly observed:

• Material qualities and the axis' machining with Rmax = 6.3 μ.
• Tolerances of h11 for the axis and H8 for the housing.
• Shaft hardness from 45 to 60 HRc.
• Concentricity of the axis from 0.3 to 0.1 mm, according to the rotation speed.
• Dynamic eccentricity between 0.4 and 0.1 mm, according to the speed.
• Rmax housing roughness = 10-25 μ depending on the type of seal.
• The use of mounting caps may be required to avoid damaging the retainer:
• It is necessary to use chamfers or rounding radii for the assembly according to the assembly's direction.
• The diameter of the chamfer (d3) is 80% to 95% of the shaft's diameter, and according to its value (between 6 and 500mm)