FK 6 ISKD
ASD / ASKD / ISD
fk 6 IsKd
Double laminar sealing rings combined for shafts
FK 6 ISKD inside clamping combined double rings (3 rings = 1 set)
Double wound laminar rings “FK 6 ISKD” are used for grease sealing of roller and plain bearings and, when greased, protect against grease leakage and against dust, dirt and splash water ingress, especially when higher sealing requirements apply. The additional sealing of the groove base diameter optimises sealing as a result of the increased deflection effect.
The “ASD” or “ASKD” arrangement is preferable to the “ISD” or “ISKD” arrangement wherever possible because of easier ring installation in the grooves of the ring carriers. The ring carriers can be made of steel, cast iron, light metal or plastic, depending on the application and technical requirements.
Ring materials
| Steel Grade | Spring resistant up to | Hardness Value | Surface Protection | Surface Colour |
|---|---|---|---|---|
| C75 | max. +300°C | On request1) | Oiled | Varies 2) |
| C60S | max. +300°C | On request1) | Oiled | Varies 2) |
| 51CrV4 | max. +400°C | On request1) | Oiled | Varies 2) |
| 1.4310 | max. +450°C | On request1) | Bright and dry | Varies 2) |
1) Varies depending on the type of thermal treatment! Hardness values depending on ring cross-section, measured in Rockwell HRA or HRC.
2) The surface colour can vary depending on the type of thermal treatment from silber/bluish to brownish/black.
Permissible circumferential speed
Please note: For rotation speeds above 1000 rpm, increase groove widths by at least 10% and use GLEITMO 980.
Run and installation tests:
Run and installation tests under operating conditions must be performed in each case before standard production of our laminar rings can begin to determine whether the desired sealing effects can be achieved.
Axial and/or radial play 3)
Axial and/or radial play 3):
If axial play occurs in the area of the rings, the groove width “A” must be increased by twice the play. If radial play occurs, the groove base diameter “D2” must be increased by the radial play. If this is not observed, damage will occur to the rings and the surrounding components. It is advisable to apply the groove width tolerances, especially in the event of thermal expansion.
FK 6 ISKD ring set 4)
1 set = 2 ISD rings and 1 ASD ring
Order information 4):
For enquiries and/or orders, the ring diameter specification must correspond to the shaft diameter (nominal dimension) “D₁” exactly. The rings can be ordered individually or in sets (1 set = 2 ISD rings + 1 ASD ring).
All dimensions in mm, *reinforced ring design
Note: Please refer to the information on pages 13, 62, 63, 64 and 65 (questionnaire).
All dimensions in mm, *reinforced ring design