The conically wound spring covers automatically follow the motions of the machine. Made of high-quality blue polished steel or alternatively of stainless steel, they can be used in vertical, horizontal and inclined positions.
When installed vertically, spring covers are mounted with the larger diameter at the top. This way the overlapping of the individual coils makes the spring covers self-cleaning.
When installed horizontally, conical spring covers are mounted with the larger diameter in the direction of the chip generation. With larger diameters or longer expansion, the maximum expansion is reduced to 60 % of the value for vertical installation.
In addition to vertical and horizontal installation, installation in an inclined position is also possible. For small angles of incline above the horizontal the same conditions apply as in horizontal installation.
By connecting several spring covers in series it is possible to deal with special requirements, such as extra-long traversing distances.
d = Shaft/spindle diameter
a = Outer diameter of the guide sleeve a ≤ D1 – 4 mm
D1 = Spiral inner diameter
D2 = Spiral outer diameter
c = Inner diameter of the outer flange c ≥ D2 + 6 mm
h = Flange height (0.6 x ZD ≤ h ≤ (ZD – 2 mm))
ZD = Compression
AZ = Extension/extension length
Selection of the spring cover suitable for your specific application is generally based on the following criteria:
Some spring covers are also available for retrofitting.