Sealed Spherical Roller Bearings With reliable protection against contamination
Contents Page
Features
Design and safety guidelines
..................................................................................
2
Sealing concepts ......................................................................
3
Product range ...........................................................................
6
Potential savings ......................................................................
6
Equivalent dynamic bearing load ..............................................
8
Equivalent static bearing load ...................................................
8
Rolling bearing reconditioning ..................................................
9
Dimension tables
Sealed spherical roller bearings, cylindrical bore....................... 10
Application examples
Continuous casting plant .......................................................... 14 Conveyor belts.......................................................................... 16 Elevator plant ........................................................................... 18
Schaeffler Technologies
TPI 218
1
Sealed spherical roller bearings
Features
Spherical roller bearings are double row, self-retaining units comprising solid outer rings with a concave raceway, solid inner rings and barrel rollers with cages. The inner rings have cylindrical or tapered bores. The symmetrical barrel rollers orient themselves freely on the concave outer ring raceway. As a result, shaft flexing and misalignment of the bearing seats are compensated. Sealed spherical roller bearings are characterised by: ■ very high basic dynamic and static load ratings ■ lower frictional torque compared to the competition ■ environmentally friendly characteristics ■ lower grease consumption and disposal costs ■ no requirement for expensive relubrication systems ■ reduced maintenance outlay ■ simple reconditioning of series 240 and 241 ■ longer operating life of the bearing. Sealed spherical roller bearings are suitable for areas of operation such as continuous casting plant, conveyor belts, elevator plant or the food industry. Spherical roller bearings of the X-life design have improved kinematics and optimised surfaces, are made from higher performance materials and do not have a rigid central rib. As a result, the basic dynamic and static load ratings and, under identical operating conditions, the basic rating life of the bearings are significantly improved. In certain applications, this means that a smaller bearing arrangement can be designed. X-life spherical roller bearings have the suffix E1.
2
TPI 218
Schaeffler Technologies
Sealing concepts Spherical roller bearings of series 222, 223, 230, 231, 232
The sealed spherical roller bearings are fitted, depending on the series, with different sealing concepts. Features of the sealing concept of sealed spherical roller bearing series 222, 223, 230, 231, 232 are as follows: ■ bearings with an oversize width are identified by the suffix WS (WS = Wide Size). As standard, this affects the series 222 and 223. Example WS22215-2RSR. The remaining sealed spherical roller bearings of the series 222, 223, 230, 231 and 232 are allocated an F-number and have the main dimensions of the specific open type ■ solid brass cage or sheet steel cage ■ greasing with a lubricant KP2K–20 in accordance with DIN 51502 recommended by FAG for a temperature range of –20 °C to +130 °C; other greases are available by agreement ■ 25% to 40% grease fill level of the bearing interior; different grease fill levels are available by agreement ■ dimensional stabilisation up to +200 °C (standard) ■ radial internal clearance CN ■ self-alignment facility 0,5° from the central position ■ limiting speed ng dependent on the grease and grease fill level ■ contact seals made from nitrile rubber (NBR), suitable for temperatures of –40 °C to +100 °C (suitable for short periods up to +120 °C); other sealing washer materials (such as fluoro rubber (FKM)) are available by agreement. Seals made from fluoro rubber (FKM, FPM, such as Viton®) comprise particularly high performance materials that may release vapour when heated to approx. +300 °C. This may occur if, for example, a welding torch is used in the dismantling of a bearing. In such cases, the appropriate safety data sheet must be observed and this is available upon request.
Schaeffler Technologies
00017CCB
Figure 1 Sealing concept of series 222, 223, 230, 231, 232
TPI 218
3
Sealed spherical roller bearings
Spherical roller bearings of series 240 and 241
4
TPI 218
Features of the sealing concept of sealed spherical roller bearing series 240 and 241 (with the exception of F-803042) are as follows: ■ main dimensions identical to those of the open bearing allow simple interchange ■ basic load ratings identical to those of an open bearing ■ X-life design ■ sealing washers are interchangeable ■ internal bearing design with sheet steel cage and loose central rib ■ greasing with a lubricant KP2R–30 in accordance with DIN 51502 recommended by FAG for a temperature range of –35 °C to +180 °C; other greases are available by agreement ■ radial internal clearance CN ■ dimensional stabilisation up to +200 °C ■ 60% grease fill level of the bearing interior; different grease fill levels are available by agreement ■ limiting speed ng dependent on the grease and grease fill level ■ self-alignment facility 0,5° from the central position ■ standard design as a completely sealed bearing with a closed outer ring, suffix H40, see table and Figure 2, page 5 ■ for simple relubrication, a design is available with a circumferential groove and three lubrication holes in the outer ring, see table and Figure 3, page 5 ■ contact seals made from fluoro rubber, for temperatures of –30 °C to +180 °C (suitable for short periods up to +200 °C); other sealing washer materials (such as NBR) are available by agreement. Seals made from fluoro rubber (FKM, FPM, such as Viton®) comprise particularly high performance materials that may release vapour when heated to approx. +300 °C. This may occur if, for example, a welding torch is used in the dismantling of a bearing. In such cases, the appropriate safety data sheet must be observed and this is available upon request.
Schaeffler Technologies
Designs
Description
Example Closed outer ring
24028-E1-2VSR-H40
Circumferential groove 24028-E1-2VSR and three lubrication holes, relubrication facility
00018CED
Figure 2 Sealing concept of series 240 and 241, closed outer ring
Schaeffler Technologies
00017CCD
Figure 3 Sealing concept of series 240 and 241
TPI 218
5
Sealed spherical roller bearings
Product range
The product range and sealing concept covers a bore diameter of 120 mm to 220 mm.
Sealing concept
The sealing concept is available for: â– series 240 with a bore diameter of 120 mm to 200 mm â– series 241 with a bore diameter of 110 mm to 220 mm.
Potential savings
In continuous slab casting plants, sealed spherical roller bearings are fitted as locating bearings and as non-locating bearings, Figure 4.
Figure 4 Fitting example
6
TPI 218
00019129
í˘“ Locating bearing í˘” Non-locating bearing
Schaeffler Technologies
The following comparison from the continuous casting sector shows what savings can be made possible by the use of sealed spherical roller bearings instead of open bearings. The grease costs for relubrication of an open bearing and a sealed bearing (seal lubrication of the housing) were taken into consideration along with the specific disposal and separation of the grease from the cooling circuit. Due to the lower maintenance outlay and the generally longer life of the sealed spherical roller bearing, the higher purchase price compared to the open bearing is recouped after only a short time. An example of the cost ratio in the life cycle of a sealed and an open bearing for a selected bearing position in a bearing position in a continuous casting plant (bearing price for the open bearing = 100%) is shown in Figure 5. The cost ratio and the development over time is decisively dependent on the bearing size. % 5 3
Figure 5 Cost comparison of open and sealed spherical bearing
Schaeffler Technologies
1 100 4
0
2
1
t
TPI 218
00019AD4
í˘“ Cumulative costs in % í˘” Recoup time in years í˘• Price of sealed bearing í˘– Price of open bearing í˘— Saving
7
Sealed spherical roller bearings
Design and safety guidelines Equivalent dynamic bearing load Load ratio and equivalent dynamic load
The equivalent dynamic bearing load P is valid for bearings that are subjected to radial and axial dynamic loads. It gives the same rating life as the combined bearing load occurring in practice. For bearings under dynamic loading, the following applies: Load ratio
Equivalent dynamic bearing load P = Fr + Y1 · Fa
P = 0,67 · Fr + Y2 · Fa Fa N Axial dynamic bearing load Fr N Radial dynamic bearing load P N Equivalent dynamic bearing load for combined load e, Y1, Y2 – Factors according to dimension tables.
Equivalent static bearing load
The equivalent static bearing load for combined loads P0 is valid for bearings that are subjected to radial and axial static loads. It induces the same load at the centre point of the most heavily loaded contact point between the rolling element and raceway as the combined bearing load occurring in practice. For bearings under static loading, the following applies:
P0 N Equivalent static bearing load for combined load F0r N Radial static bearing load – Y0 Factors according to dimension tables F0a N Axial static bearing load.
8
TPI 218
Schaeffler Technologies
Rolling bearing reconditioning
During the maintenance of machinery and plant, many rolling bearings are taken out of service and replaced by new ones as a precaution. In some cases, this safety-conscious approach blocks any appreciation of the potential cost savings. The fact is: reconditioned bearings generally give the same performance as new ones. The reconditioning of rolling bearings and rolling bearing units is one of the core competences of the service arm of Schaeffler Group Industrial and is offered at several certified locations worldwide. Our services for rolling bearings of all types apply irrespective of manufacturer and are not restricted to Schaeffler Group products. The Schaeffler Group is in a position to recondition and modify rolling bearings with an outside diameter of up to 4 250 mm, Figure 6. It is thus an expert partner for customers from a very wide range of industrial sectors such as general and special machine building, steel and aluminium, pulp and paper production, wind power, shipbuilding, private and public railways and mining.
Further information
Schaeffler Technologies
00018942
Figure 6 Bearing examination by reconditioning specialists of the Schaeffler Group
â– Further information on the reconditioning of rolling bearings is given in Technical Product Information TPI 207, Reconditioning of Rolling Bearings.
TPI 218
9
00017CD1
00017CD0
Sealed spherical roller bearings Cylindrical bore
222, 223, 230, 231, 232
240, 241
Dimension table · Dimensions in mm Designation Open X-life
Sealed
Mass
Dimensions1)
m
d
D
B
rmin
⬇kg
WS22205-E1-2RSR
XL
22205
0,236
25
52
23
1
WS22206-E1-2RSR
XL
22206
0,31
30
62
25
1
WS22207-E1-2RSR
XL
22207
0,496
35
72
28
1
WS22208-E1-2RSR
XL
22208
0,54
40
80
28
1,1
F-808529.PRL2)
XL
22208
0,546
40
80
29
1,1
WS22209-E1-2RSR
XL
22209
0,69
45
85
28
1,1
WS22210-E1-2RSR
XL
22210
0,72
50
90
28
1,1
WS22211-E1-2RSR
XL
22211
0,988
55
100
31
1,5
WS22311-E1-2RSR
XL
22311
2,47
55
120
49
2
WS22212-E1-2RSR
XL
22212
1,3
60
110
34
1,5
WS22312-E1-2RSR
XL
22312
3,19
60
130
52
2,1
WS22213-E1-2RSR
XL
22213
1,74
65
120
38
1,5
WS22314-E1-2RSR
XL
22314
4,2
70
150
51
2,1
WS22214-E1-2RSR
XL
22214
1,92
70
125
38
1,5
WS22215-E1-2RSR
XL
22215
2
75
130
38
1,5
F-803042.PRL
–
24015
1,38
75
115
40
1,1
WS22216-E1-2RSR
XL
22216
2,43
80
140
40
2
WS22217-E1-2RSR
XL
22217
2,8
85
150
44
2
F-803007.PRL2)
–
541019
5,5
90
150
72
2,5
F-803031.PRL
–
23218
4,4
90
160
52,4
2
WS22218-E1-2RSR
XL
22218
3,9
90
160
48
2
F-803008.PRL
–
533653
6,1
100
170
65
2
F-803032.PRL
–
23220
6,6
100
180
60,3
2,1
WS22220-E1-2RSR
XL
22220
5
100
180
55
2,1
F-803000.PRL
–
23120
4,2
100
165
52
2
WS22222-E1-2RSR
XL
22222
8
110
200
62
2,1
F-803013.PRL
–
23022
3,7
110
170
45
2
F-803063.PRL
–
23122
5,37
110
180
56
2
24122-E1-2VSR-H40
XL
24122
7
110
180
69
2
F-803034.PRL
–
23024
4
120
180
46
2
WS22224-E1-2RSR
XL
22224
9,76
120
215
67
2,1
24024-E1-2VSR-H40
XL
24024
5,5
120
180
60
2
24124-E1-2VSR-H40
XL
24124
10,1
120
200
80
2
1)
The dimensions only apply to sealed spherical roller bearings.
2)
Wider than the open standard bearing.
10
TPI 218
Schaeffler Technologies
Mounting dimensions 222, 223, 230, 231, 232
Mounting dimensions da min
Da max
ra max
00017CD3
00017CD2
000199F0
240, 241
Mounting dimensions 240, 241
Basic load ratings
Calculation factors
Fatigue limit load
dyn.
stat.
dyn.
Cr
C0r
e
Y1
Y2
Y0
N
N
stat.
Cur N
30
46
1
48 000
42 500
0,34
1,98
2,94
1,93
4 800
35,7
55,2
1
64 000
57 000
0,31
2,15
3,2
2,1
6 900
42,3
64,1
1
88 000
81 500
0,31
2,16
3,22
2,12
9 400
47
73
1
101 000
91 000
0,28
2,41
3,59
2,35
11 800
46,6
73
1
101 000
91 000
0,28
2,41
3,59
2,35
11 800
52
78
1
104 000
99 000
0,26
2,62
3,9
2,56
12 700
57
83
1
109 000
107 000
0,24
2,81
4,19
2,75
14 300
64
91
1,5
129 000
130 000
0,23
2,92
4,35
2,86
17 300
67
102
2
265 000
260 000
0,36
1,89
2,81
1,84
23 900
69
101
1,5
160 000
155 000
0,24
2,84
4,23
2,78
20 200
70
113
2,1
310 000
310 000
0,35
1,91
2,85
1,87
28 000
74
111
1,5
202 000
210 000
0,24
2,81
4,19
2,75
25 500
82
138
2,1
390 000
390 000
0,34
2
2,98
1,96
36 500
79
116
1,5
211 000
226 000
0,23
2,95
4,4
2,89
28 000
84
121
1,5
216 000
236 000
0,22
3,1
4,62
3,03
29 500
86,6
105
1
198 000
270 000
0,28
2,39
3,56
2,34
28 500
91
129
2
249 000
270 000
0,22
3,14
4,67
3,07
33 500
96
139
2
305 000
325 000
0,22
3,04
4,53
2,97
38 500
96
138
2
400 000
620 000
0,43
1,59
2,36
1,55
54 000
101
149
2
325 000
425 000
0,26
2,55
3,8
2,5
36 500
101
149
2
345 000
375 000
0,23
2,9
4,31
2,83
42 500
111
156
2
500 000
670 000
0,32
2,09
3,11
2,04
59 000
112
168
2,1
490 000
560 000
0,24
2,84
4,23
2,78
60 000
112
168
2
430 000
475 000
0,24
2,84
4,23
2,78
52 000
111
154
2
400 000
490 000
0,26
2,62
3,9
2,56
56 000
122
188
2,1
550 000
600 000
0,25
2,71
4,04
2,65
62 000
119
161
2
275 000
440 000
0,2
3,31
4,92
3,23
38 000
123
166
2
365 000
530 000
0,24
2,79
4,15
2,73
45 500
123,4
169
2
530 000
750 000
0,34
1,96
2,92
1,92
84 000
129
171
2
300 000
450 000
0,18
3,66
5,46
3,58
43 000
137,7
198,2
2,1
640 000
740 000
0,25
2,71
4,04
2,65
71 000
132,8
170,2
2
450 000
690 000
0,29
2,33
3,47
2,28
84 000
134,1
187,8
2
680 000
950 000
0,37
1,84
2,74
1,8
101 000
Schaeffler Technologies
TPI 218
11
00017CD1
00017CD0
Sealed spherical roller bearings Cylindrical bore
222, 223, 230, 231, 232
240, 241
Dimension table (continued) · Dimensions in mm Designation Open X-life
Sealed
Mass
Dimensions1)
m
d
D
B
rmin
⬇kg
WS22226-E1-2RSR
XL
22226
130
230
75
3
F-803045.PRL
XL
23026
5,66
130
200
52
2
24026-E1-2VSR-H40
XL
24026
8
130
200
69
2
24126-E1-2VSR-H40
XL
24126
10,8
130
210
80
2
F-803051.PRL2)
–
22228
15,4
140
250
78
3
F-803061.PRL
XL
23028
5,9
140
210
53
2
24028-E1-2VSR-H40
XL
24028
8,5
140
210
69
2
24128-E1-2VSR-H40
XL
24128
13,1
140
225
85
2,1
24030-E1-2VSR-H40
XL
24030
10,6
150
225
75
2,1
24130-E1-2VSR-H40
–
24130
19,8
150
250
100
2,1
F-803010.PRL
–
23132
19,4
160
270
86
2,1
24032-E1-2VSR-H40
XL
24032
12,9
160
240
80
2,1
24132-E1-2VSR-H40
XL
24132
25,6
160
270
109
2,1
F-803057.PRL
–
23134
20,7
170
280
88
2,1
24034-E1-2VSR-H40
XL
24034
17,5
170
260
90
2,1
24134-E1-2VSR-H40
XL
24134
26,9
170
280
109
2,1
24036-E1-2VSR-H40
XL
24036
23,1
180
280
100
2,1
24136-E1-2VSR-H40
XL
24136
33,7
180
300
118
3
F-803039.PRL
–
23038
17,2
190
290
75
F-809822.PRL
–
23238
48,9
190
340
120
4
24038-E1-2VSR-H40
XL
24038
24,1
190
290
100
2,1
24138-E1-2VSR-H40
XL
24138
42,1
190
320
128
3
F-803046.PRL
–
23140
41,6
200
340
112
3
F-803067.PRL
–
23240
56,8
200
360
128
3
24040-E1-2VSR-H40
XL
24040
30,6
200
310
109
2,1
24140-E1-2VSR-H40
XL
24140
52,2
200
340
140
3
F-808418.PRL
–
23144
50,6
220
370
120
4
F-803054.PRL
–
23244
79,7
220
400
144
4
F-803053.PRL
–
23944
12
220
300
60
24144-E1-2VSR-H40
XL
24144
65,2
220
370
150
4
F-803056.PRL
–
23992
460
620
118
4
11,8
103
1)
The dimensions only apply to sealed spherical roller bearings.
2)
Wider than the open standard bearing.
12
TPI 218
2,1
2,1
Schaeffler Technologies
Mounting dimensions 222, 223, 230, 231, 232
00017CD3
00017CD2
000199F0
240, 241
Mounting dimensions 240, 241
Mounting dimensions
Basic load ratings
Calculation factors
da min
dyn.
stat.
dyn.
Cr
C0r
e
Y1
Y2
Y0
N
N
Da max
ra max
Fatigue limit load stat.
Cur N
144
216
2,5
760 000
890 000
0,26
2,62
3,9
2,56
149
187
2
390 000
600 000
0,2
3,46
5,15
3,38
52 000
144,3
189,3
2
570 000
860 000
0,31
2,21
3,29
2,16
101 000
146
198,1
2
710 000
1 050 000
0,34
1,98
2,94
1,93
110 000
159,2
230,7
2,5
870 000
1 040 000
0,25
2,67
3,97
2,61
97 000
158
199
2
400 000
620 000
0,2
3,34
4,98
3,27
47 500
155,3
199,4
2
590 000
930 000
0,28
2,37
3,53
2,32
109 000
156,4
211,9
2,1
800 000
1 190 000
0,34
1,99
2,96
1,94
124 000
166,2
213,2
2,1
680 000
1 090 000
0,29
2,32
3,45
2,26
123 000
167,1
235,2
2,1
1 050 000
1 520 000
0,37
1,83
2,72
1,79
149 000
172
258
2,1
865 000
1 290 000
0,25
2,67
3,97
2,61
112 000
177,2
227,7
2,1
770 000
1 240 000
0,29
2,32
3,45
2,26
137 000
179,9
254,1
2,1
1 220 000
1 800 000
0,37
1,8
2,69
1,76
168 000
197,1
256
2,1
915 000
1 460 000
0,25
2,67
3,97
2,61
130 000
187,6
246,6
2,1
940 000
1 480 000
0,31
2,2
3,27
2,15
159 000
190,8
264,4
2,1
1 260 000
1 900 000
0,36
1,9
2,83
1,86
179 000
198,9
265,5
2,1
1 130 000
1 770 000
0,32
2,1
3,13
2,06
181 000
201
282,4
2,5
1 460 000
2 170 000
0,36
1,86
2,77
1,82
203 000
200
280
2,1
950 000
1 290 000
0,2
3,46
5,15
3,38
139 000
228,2
298,2
3
1 560 000
2 600 000
0,31
2,21
3,29
2,16
157 000
209,3
275,8
2,1
1 160 000
1 860 000
0,31
2,2
3,27
2,15
192 000
213,2
301,2
2,5
1 680 000
2 550 000
0,37
1,82
2,7
1,78
226 000
231
294
2,5
1 340 000
2 280 000
0,28
2,43
3,61
2,37
138 000
242,9
321
2,5
1 600 000
2 650 000
0,31
2,15
3,2
2,1
155 000
220,7
294,8
2,1
1 350 000
2 150 000
0,32
2,13
3,17
2,08
216 000
222,4
320,2
2,5
1 880 000
2 800 000
0,39
1,71
2,54
1,67
250 000
261
327
3
1 560 000
2 800 000
0,28
2,39
3,56
2,34
202 000
264,6
351,3
3
2 000 000
3 400 000
0,33
2,06
3,06
2,01
182 000
245,3
283,8
2,1
540 000
1 040 000
0,15
4,6
6,85
4,5
80 000
242,7
347,6
3
2 190 000
3 250 000
0,39
1,74
2,59
1,7
290 000
509,6
580,2
3
2 000 000
4 550 000
0,16
4,28
4,19
6,37
265 000
Schaeffler Technologies
79 000
TPI 218
13
Continuous casting plant
00017B09
In continuous casting plant, the cast strand is supported by rolls. In order to restrict deflection, the rolls are supported at several points along their length by rolling bearings. These bearings are subjected to high loads, low speeds, spray water and high temperatures. Spherical roller bearings of sealed design are used to support the rolls.
Figure 1 Continuous casting plant
Requirements
14
TPI 218
The demands on the design are: â– high static load carrying capacity â– maximum resistance to the ingress of foreign matter.
Schaeffler Technologies
Sealed spherical roller bearings E1 offer a high standard of reliability, cost-efficiency and technical performance capacity in the metal-producing and metal-processing industry. Due to the particularly compact bearing seals in series 240 and 241, the internal construction used can be the same as in the open type. The advantages of the field tested X-life design are now also accessible for sealed spherical roller bearings. The external dimensions of course remain identical to those of the unsealed variant. The extremely reliable sealing arrangement using a high temperature elastomer (FKM) and a special high temperature lubricant allows a longer bearing operating life, leading to higher machine availability and thus to greater added value. The maintenance-friendly sealing concept of series 240 and 241 also contributes to rapid amortisation. For the specific applications, the grease operating life as well as the relubrication quantity and the service life must be checked.
00019128
Design solution
Figure 2 Strand guide roll
Products used
Schaeffler Technologies
í˘“ 24028-E1-2VSR-C4.
TPI 218
15
Conveyor belts
00017B0B
Belt conveyor systems in the mining sector are used to transport large masses over long distances. In order to support the driven belt pulleys, FAG supplies special housings and spherical roller bearings.
Figure 1 Belt pulleys in conveyor belts
Requirements
16
TPI 218
The demands on the design are: â– a robust bearing arrangement â– maximum resistance to the ingress of foreign matter â– minimum lubricant demand.
Schaeffler Technologies
Design solution
FAG spherical roller bearings are designed for very high loads and facilitate the compensation of misalignments and shaft deflections. Special cylindrical roller bearings are used for the non-driven pulleys that normally have an internal bearing arrangement. Due to the extremely high basic static and dynamic load ratings, the customer requirements are satisfied to an optimum extent. In addition, the sealing of the bearings gives a drastic improvement in reliability and operating life. Even in harsh, dusty environmental conditions, the bearings have the best possible protection against the ingrease of foreign matter. Furthermore, the seals on both sides gives a significant reduction in the grease quantity consumed during operation. The use of high quality grease in the sealed rolling bearing and a biologically compatible grease for sealing the housing increases cost-effectiveness, extends the maintenance intervals of the conveyor belt and protects the surrounding environment. For the specific applications, the grease operating life as well as the relubrication quantity and the service life must be checked.
0001915B
í˘“ Non-locating bearing í˘” Locating bearing
Figure 2 Drive pulley of a belt conveyor
Products used
Schaeffler Technologies
í˘“ F-808418.PRL-2RSR-L16N (= 23144B) í˘” F-808418.PRL-2RSR-L16N (= 23144B).
TPI 218
17
Elevator plant
00017B07
Due to their optimised bearing kinematics and minimal frictional torque, sealed spherical roller bearings are an ideal choice for use in elevator plant.
Figure 1 Elevator plant
Requirements
18
TPI 218
The demands on the design are: â– a low-maintenance bearing arrangement â– maximum operating life.
Schaeffler Technologies
The extremely reliable sealing arrangement using an elastomer already subjected to field tests allows extended operating life and thus a possibility of approaching freedom from maintenance. The consistently very high basic load ratings of the spherical roller bearings also permits downsizing of existing bearing arrangements or in new designs. We address the increasing requirements in the travel height and travel speed of elevators using our sealed spherical roller bearings with high basic load ratings and smooth running characteristics. Furthermore, a particularly low noise level can be achieved by ordering specially developed low noise designs. For the specific applications, the grease operating life as well as the relubrication quantity and the service life must be checked.
000191CF
Design solution
Figure 2 Elevator roller
Products used
Schaeffler Technologies
í˘“ WS22212-E1-2RSR-TVPA-L055.
TPI 218
19
20
TPI 218
Schaeffler Technologies
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