Non-contact seals series CF are specifically designed for spindle bearings and offer highest efficiency with absolutely leak tightness within a minimized space of 6 mm width only.
The labyrinth design is a combination of gaps in axial and radial direction in five steps. The axial gaps are shielding while the radial gaps are providing back transport. A catching groove improves the seal efficiency – even without any shaft rotation.
The option of saving sealing air and increased maintenance intervals are offering a considerable commercial progress and advantage.
GMN non-contact seals Type CF 60 and CF 619 are produced according to the dimensions of ball bearing rows 60 and 619. They are made of steel, hardened and face-ground. The spindle bearing is pre-loaded directly through the CF seal’s inner ring
Technical data
Material: Steel
Hardness: HRC ≥ 45
Plane-parallelism: ≤ 5 μm
Speed limit: no limit
Width: 6 mm for all sizes
Gap seal: CF-Profile
Axial clearance: Sax = 1 mm
Radial clearance: Srad = 0,5 mm
Characteristics:
Installation-friendly: No adaptation of the connecting parts required; can be installed directly next to the spindle bearing “sandwiched” between bearing and shaft nut
Frictionless: Non-contact design of the inner and outer ring
Wear-free: Unlimited service life
Unlimited speeds: No axial movement between the spindle bearing and shaft nut
Heat-free: No thermal stress for the seal and adjacent components
Effective: High sealing effect against heavy spray loads over a large speed range – including when the shaft is at a standstill