Combined Bearings
Lifting and handling in a economical way.


Standard Nb-Profiles


 

  • All profiles from Standard 0 on are made from highquality steel UNI FE 510.C Nb, in sandblasted version. Lmax = 12 m.
  • To our Combined bearing system, we deliver all profiles in fixed lengths, immediately from stock.
  • All profiles are available in fine straightened style on request.
  • Higher load capacity with new Nb-series.
  • Machined profiles according to customer drawings on request.

 



Standard Nb-Profiles
Standard Nb-Profiles

Product Information


Standard A
weight/m
2,62 kg
Wx:
4,38 cm3
Wy:
1,07 cm3
ix:
0,31 cm
ey:
0,78 cm
lx:
10,6 cm4
ly:
1,73 cm4
iy:
0,05 cm


Standard S
weight/m
5,3 kg
Wx:
11,9 cm3
Wy:
2,5 cm3
ix:
2,4 cm
ey:
0,94 cm
lx:
38,8 cm4
ly:
5,2 cm4
iy:
0,8 cm


Standard 0 Nb
weight/m
10,5 kg
Wx:
32 cm3
Wy:
6 cm3
ix:
3,2 cm
ey:
1,3 cm
lx:
137 cm4
ly:
15 cm4
iy:
1,0 cm

Standard 1 Nb
weight/m
14,8 kg
Wx:
53 cm3
Wy:
11 cm3
ix:
3,8 cm
ey:
1,5 cm
lx:
273 cm4
ly:
27 cm4
iy:
1,2 cm


Standard 2 Nb
weight/m
20,9 kg
Wx:
81 cm3
Wy:
15 cm3
ix:
4,3 cm
ey:
1,5 cm
lx:
493 cm4
ly:
38 cm4
iy:
1,2 cm



Standard 3 Nb
weight/m
28,6 kg
Wx:
128 cm3
Wy:
27 cm3
ix:
4,8 cm
ey:
2,0 cm
lx:
865 cm4
ly:
89 cm4
iy:
1,5 cm



Standard 4 Nb
weight/m
36,0 kg
Wx:
190 cm3
Wy:
39 cm3
ix:
5,7 cm
ey:
2,2 cm
lx:
1494 cm4
ly:
150 cm4
iy:
1,8 cm



Standard 5 Nb
weight/m
42,8 kg
Wx:
250 cm3
Wy:
48 cm3
ix:
6,3 cm
ey:
1,9 cm
lx:
2185 cm4
ly:
205 cm4
iy:
1,9 cm



Standard 6 Nb
weight/m
52,3 kg
Wx:
340 cm3
Wy:
57 cm3
ix:
7,1 cm
ey:
2,0 cm
lx:
3423 cm4
ly:
270 cm4
iy:
2,0 cm


Extrainfo

WINKEL U-Profiles with 30% increased load capacity

  • higher load capacity at same sizes by using profiles with steelgrade (St 52.3 Nb)
  • choice of smaller sizes (price advantage)
  • higher resistance against wear out effects

    Comparison St 52.3 - St 52.3 Nb
    Characteristic
    St 52.3 (old)
    St 52.3 Nb new
    Yield point 1
    min 355 N/mm2
    min 420 N/mm2
    Yield point 2
    min 345 N/mm2
    min 400 N/mm2
    Tensile strength
    490 - 630 N/mm2
    540 - 670 N/mm2
    Elongation
    min 22%
    min 20%
    max. hertzian pressure
    750 N/mm2
    860 N/mm2
    Notice: Yield point 1 is only valid for flange thickness < 16 mm, yield point 2 is only valid for flange thickness > 16 mm.

    Caused by micro alloying with niobium, the steelgrade St 52.3 Nb has a higher tensile and yield strength
    and a more fine grained structure than a conventional Str 52.3 steelgrade.
    Thus the steelgrade St 52.3 Nb has a better weldability and a higher resistance to brittle fracture.
    The higher bearing pressure of St 52.3 Nb in comparison to St 52.3 is shown by the figure below.


    Bearing pressures for radial bearings in comparison:

Dimentionsing

Q = Load capacity (N)
L = Load distance to suspension point (mm)
P = Suspension point
A = Bearing distance (mm) recommended 500-1000 mm

Formula

Fmax [N] = (Q * L) / (2 * A)
stat.radial

To avoid wear out in the profile, which is not hardened, the pressure between bearing and profile should be max.
Pzul = 860 N/mm² for Nb-profiles (St.0-St.6 + PR0-PR6)
Pzul = 750 N/mm² for all profiles except Nb-series.
Here indicated are F maxstat radial + axial for each bearing.

Selection of bearings over the hertzian pressure

Dimensioning /<br>calculation of the reel load
Dimensionierung / Berechnung der Rollenbelastung

Radial Bearing
Combined
Bearing

Axial Bearing
fix
Combined
Bearing

Axial Bearing
adjustable
Combined
Bearing

Axial Bearing
adjustable
Combined
Bearing with
eccentric
bearing
Combined
Bearing with
combined
bolt
FR KN

max. stat.
radial
FA KN

max. stat.
axial
Profiles
-
4.052 P
-
-
-
-
0,80
0,40
A
-
-
-
4.053
-
-
-
-
5,23
1,68
S
-
-
(PR) 2.054
(PR) 4.054
(PR) 4.454
(PR) 4.072
JC 4.054
KB (PR) 4.072
9,40
3,10
0 NB
PR 0 NB
-
(PR) 2.055
(PR) 4.055
(PR) 4.455
(PR) 4.073
JC 4.055
KB (PR) 4.073
11,30 (8,59)
3,73 (2,86)
1 NB
PR 1 NB
(3018)
(PR) 2.056
(PR) 4.056
(PR) 4.456
(PR) 4.074
JC 4.056
KB (PR) 4.074
11,72
3,87
2 NB
PR 2 NB
-
-
4.057
4.057
4.075
-
-
(8,92)
(2,97)
-
-
(3019)
(PR) 2.058
(PR) 4.058
(PR) 4.458
(PR) 4.076
JC 4.058
KB (PR) 4.076
20,47 (15.57)
6,76 (5,19)
3 NB
PR 3 NB
(3020)
-
4.059
4.059
4.077
-
-
(15,47)
(5,15)
-
-
(2912)
-
4.060
4.060
4.078
-
-
(16,49)
(5,49)
-
-
(3100)
(PR) 2.061
(PR) 4.061
(PR) 4.461
(PR) 4.0784
JC 4.061
KB (PR) 4.0784
21,68
7,16
4 NB
PR 4 NB
-
(PR) 2.062
(PR) 4.062
(PR) 4.462
(PR) 4.079
JC 4.062
KB (PR) 4.079
30,92 (23,52)
10,20 (7,84)
5 NB
PR 5 NB
(3353)
(PR) 2.063
(PR) 4.063
(PR) 4.463
-
JC 4.063
-
54,02
17,80
6 NB
PR 6 NB
-
-
-
-
(PR) 4.080
-
KB (PR) 4.080
37,81
17,80
6 NB
PR 6 NB
-
-
-
4.089
-
-
-
41,71
13,91
10
-
-
-
-
4.090
-
-
-
58,00
19,40
16
-
-
-
-
4.091
-
-
-
84,00
28,00
18
-
-
-
-
4.092
-
-
-
101,50
33,90
28
-
-
-
-
4.093
-
-
-
139,40
46,50
36
42
-