Oil seal OS-Q12

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OS-Q12

Description

Fabric-reinforced OD
Spring-loaded elastomer sealing lip
Radial lubricating grooves at the bottom side
Relubrication is possible if 2 seals are installed back-to-back. For this the housing is provided with a circumferential annular groove and lubrication connection

Special features

Modern sealing lip design for high dynamic sealing action
Robust, fabric-reinforced outer diameter (no metal case)
High resistance to wear
For housings with increased surface roughness
Simple installation and replacement of the seal possible
All components of the seal are corrosion-resistant
Split design available, can be replaced without deinstallation of the shaft
Relubrication possible by radial grooves

Applications e.g.:

Heavy machinery
Marine applications
Rolling mills
Wind power systems
Large gearboxes

Materials

Standard material

Sealing lip	NBR 80
OD layer	NBR-impregnated cotton fabric
Spring	Stainless steel 1.4310

Special materials

Sealing lip	FKM 80
OD layer	FKM- impregnated cotton fabric
Spring	Stainless steel 1.4310

Application parameters

For the standard materials combination

Temperature	-30°C to +100°C
Pressure	max. 0,05 MPa
Shaft speed	max. 20 m/s
Media	Mineral oil based lubricants

The diff erent permitted maximum values should always be seen in connection with all application parameters. The total load on the seal is the combination of individual values.

Design information

Shaft

Tolerance	ISO h9
Hardness	60 HRC
Roughness	Ra = 0,2 - 0,8 μm
Rmax	≤ 2,5 μm
Surface finish	tfree of orientation (lead free)

Housing bore

Tolerance	D ≤500mm: ISO H8
	D >500mm: D+0,0004 x D
Roughness	Ra = 1,6 - 4 μm
	Rmax ≤ 15 μm

Installation

The radial shaft seal is installed in an axially accessible housing. The outer diameter and the height of the seal are slightly oversized. The outer diameter is somewhat compressed during installation. Tightening the flange cover also causes slight axial compression of the seal height. The types OS-Q12 and OS-Q13 are installed in pairs back to back, as a rule.

Please read our installation instructions.