Bearer Springs
Features
Conventional circular and rectangular bearer springs are designed to support the vehicle body in their compression mode whilst allowing horizontal, lateral and rotational bogie movements by virtue of the more flexible shear mode.
Waisted Type Bearer Springs offer optimised performance within limited space envelopes, particularly where large horizontal displacements require to be accommodated.
Further ranges of springs, i.e. Hourglass and Half-Hourglass Bearer Springs with unique performance characteristics are also detailed in this publication.
 
Application
Metalastik® Bearer Springs provide a bearing medium between rail vehicle bodies and bogies and are operating worldwide in various suspension applications including locomotives, passenger and freight vehicles
Bearer Springs(Circular)
 
55 - 85mm   Horizontal Deflection
 
Bearer Springs should not be used at both maximum vertical load capacity and maximum shear deflection. Hence, for any round or square Bearer Spring the multiple of Pz (vertical load) and dx (shear deflection) should be less then the value quoted in the table.
 Product No
 
17-1139
17-1526
17-1374
17-1326
 Vertical Load Pz
kN
54
100
100
180
 Vertical Deflection dz
mm
11
14
15
17
 Vertical Stiffness (initial)
kN/mm
4.7
6.3
6.1
9.5
 Horizontal Deflection dx
mm
56
71
76
85
 Pz x dx
max
1350
2700
2700
7600
 Dimension X
mm
170
190
280
292
                    Y
mm
170
190
195
292
                    Z
mm
150
180
220
213
 Unit Mass
kg
9
13.5
28
33
Bearer Springs(Rectangular)
 
55 - 69mm   Shear Deflection
 
Bearer Springs should not be used at both maximum vertical load capacity and maximum shear deflection. Hence, multiples of Pz (vertical load) x dx, Pz x dy and Pz (dx +dy) should be less then the value quoted in the table.
 Product No
 
17-1633
17-1761
17-1341
17-2113
17-1853
 Vertical Load Pz
kN
275
240
350
73
90
 Vertical Deflection dz
mm
11
12
14
13
14
 Vertical Stiffness (initial)
kN/mm
25
20
25
6
6
 Longitudinal Deflection dx
mm
54
61
65
66
69
 Lateral Deflection dy
mm
42
50
46
48
56
 Pz x dx
max
7340
7320
11400
2400
3100
 Pz x dy
max
4810
6000
7000
1600
2700
 Pz (dx + dy)
max
6360
6930
9560
2040
3020
 Dimension X
mm
246
306
349
351
230
                    Y
mm
216
211
210
217
192
                    Z
mm
162
188
178
164
180
 Unit Mass
kg
23.2
31.8
31.1
26
21
Bearer Springs(Rectangular)
 
70 - 108mm   Shear Deflection
 
Bearer Springs should not be used at both maximum vertical load capacity and maximum shear deflection. Hence, multiples of Pz (vertical load) x dx, Pz x dy and Pz (dx +dy) should be less then the value quoted in the table.
 Product No
 
17-2079
17-1279
17-1172
17-1260
 Vertical Load Pz
kN
126
95
300
41
 Vertical Deflection dz
mm
14
17
16
27
 Vertical Stiffness (initial)
kN/mm
8
5
17
1.4
 Longitudinal Deflection dx
mm
70
83
83
108
 Lateral Deflection dy
mm
45
52
50
81
 Pz x dv
max
7670
3940
12400
2160
 Pz x dy
max
4900
2440
7900
1600
 Pz (dx + dy)
max
6670
3940
11800
2160
 Dimension X
mm
360
432
432
330
                    Y
mm
220
241
241
191
                    Z
mm
182
218
216
299
 Unit Mass
kg
23
42
49
35
Bearer Springs(Waisted)
 
<140 mm Shear Deflection
 
 Product No
 
17-1665
17-1762
 Vertical Load Pz
kN
120
160
 Vertical Deflection dz
mm
4
12.5
 Longitudinal Deflection dx
mm
110
140
 Dimension X
mm
387
395
                    Y
mm
220
368
                    X
mm
215
268
 Unit Mass
kg
37.3
49