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FKM

FKM

Product catalog summary

Product Description
Simmerring Cassette Seal Type 1 is designed to extend maintenance intervals without requiring shaft hardening or grinding. It can replace older solutions without altering the housing, and maintenance or seal replacement does not necessitate shaft machining.

Product Advantages

Extended maintenance intervals.
No need for shaft hardening or grinding.
Compatible with existing housing designs.
Robust against dirt ingress.

Product Properties

Special design types available on request.
Constructed with elastomer/sheet metal outer casing.
Features a spring-loaded sealing lip and additional dust lips.
High resistance to dirt ingress, suitable for commercial and construction vehicles.

Applications
Primarily used in propeller shafts, hubs, and pinions of commercial vehicles, construction machinery, and agricultural machinery. Special designs are necessary for axial shaft movement.

Material

Fluoro elastomer (75 FKM 595), red-brown color.
Metal insert made of unalloyed steel DIN 1624 – EN10139.
Spring made of spring steel 17223.

Operating Conditions

Temperature: ≤ +100 °C
Speed: ≤ 9 m/s
Pressure: ≤ 0.05 MPa

Fitting & Installation

Shaft tolerance: ISO h8, runout: IT 8, roughness: Rz = 10 … 16 µm.
Housing bore tolerance: ISO H8, roughness: Rz = 10 … 16 µm.
Suitable for shaft diameters ranging from 55.00 to 133.35 mm.

Additional Information
The Simmerring Cassette Seal Type 1 is an economical system solution with an integrated labyrinth to protect against extreme soiling, meeting high demands for dynamic seals.

Catalog excerpts

Cassette Seals | Simmerring Cassette Seal Type 1 (FKM) Simmerring Cassette Seal Typ 1 Product description Complete unit consisting of a Simmerring and an integrated running surface. Economical system solution with integrated labyrinth to protect against extreme soiling. The integrated running surface meets the high demands placed Product advantages ■ Lengthening of maintenance interval for individual units ■ Shaft must not be hardened or ground ■ Old solution can usually be replaced by Simmerring Cassette Seal without change to housing ■ The shaft must not be machined on maintenance or seal Product properties ■ Design: special types, on enquiry ■ Outer casing: elastomer/sheet metal ■ Additional dust lips ■ high resistance to dirt ingress These examples of use provide general information on the pri- mary applications for Simmerring Cassette Seals and their per- formance in relation to dirt from the outside. Simmerring Cassette Seals (types 1, 2 or 3) must be selected taking into account the application conditions (shaft speed, oil temperature, etc.). ■ Propeller shafts*, hubs and pinions on axles of commercial vehicles (lorries, buses, trailers, special vehicles) ■ Pinions on axles of construction machinery (road rollers, excavators, fork-lift trucks, mixers) and agricultural machinery ■ Power take-off drives of construction machinery (road rollers, excavators, fork-lift trucks, mixers) * With axial shaft movement, special design necessary Fluoro elastomer Operating conditions For material definitions, it must be taken into account that it is possible that not all extreme conditions will occur simultaneously. Fitting & installation Housing bore Careful fitting according to DIN 3760 is a prerequisite for the correct function of the seal -* Technical Manual. Further information on enquiry. Simmerring Cassette Seal Typ 1 Freudenberg Simrit GmbH & Co. KG | Simmerrings and Rotary Seals eCatalog 2009

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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