Spherical Roller Bearings
HPS, redefining the standard.
Trademark registration
pending
Limiting Speed
Life
20%
higher
2the times
operating life
(maximum)
(maximum)
Des ign
Techn ology
Exclusive
through
analytical
Material
Technology
State-of-the-art material
technology through
detailed analysis of raw
material
NSK design
advanced
technology
Manufacturing
Technology
The most advanced
production system
guarantees outstanding
quality control
Continually developing products with greater strength and higher accuracy,
NSK’s new HPS fully incorporate the advan tages of NSK’s world-class design, materials,
and manufacturing technology, setting a new standard for bearings.
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High performance in diverse applications with reduced
maintenance costs and more compact design
HPS spherical roller bearings meet the needs of various equipment for components with reduced maintenance
costs and unsurpassed functionality. By taking full advantage of NSK’s wealth of experience and expertise, HPS
spherical roller bearings realize unprecedented endurance and high limiting speeds to support downsizing while at
the same time improving performance and lengthening equipment operating life. Just what you would expect from
NSK, the leading bearing company.
Features of HPS Spherical Roller Bearings
Life
Limiting Speed
2 times
20%
higher
the operating life
(maximum)
Long Life
(maximum)
Lower Maintenance Cost
Maintenance costs are an important factor in reducing total equipment costs. HPS
spherical roller bearings realize twice the operating life of conventional products, and
longer operating life leads to lower maintenance costs.
Flexible
Applicable to a variety of applications
With improved cage resistance to wear at higher speeds over longer period of operation,
HPS spherical roller bearings deliver high performance to a variety of applications.
Compact
Contributing to equipment downsizing
Achieving longer operating life can be realized together with the selection of smaller
bearings. HPS spherical roller bearings allow compact design for various equipment,
thereby supporting the demand for downsizing.
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Long operating life reduces maintenance cost
HPS spherical roller bearings demonstrate twice the operating life of conventional EA Series bearings for longer
Life
equipment operating life that lowers maintenance costs.
Comparison
HPS
Life
2the times
operating life
20%
higher
CD
High-speed, long-term operability provides increased
flexibility across a wide range of applications.
HPS spherical roller bearings exhibit dramatically reduced cage wear at higher speeds over longer periods of operation.
As a result, limiting speeds are increased to provide greater flexibility across an extensive range of applications.
(maximum)
Limiting speed
(maximum)
Limiting Speed
EA
HPS
5
EA
CD
6
Innovative design drawing upon a variety of technologies
leads to high performance in next-generation products
Technology
Innovative design developed through enhanced structural analysis
The HPS cage incorporates a roller guide function in place of a guide ring. Eliminating the guide ring and
optimizing the design of the inner and outer ring configuration facilitates the placement of additional, larger
rollers. Optimized design for the internal specifications and improved press technology greatly increase
load capacity, and realize longer life. Special surface treatment further strengthens the cage, reducing
wear, heat and friction; it also allows for higher limiting speeds.
Cage
Cage
Adoption of state-of-the-art materials
HPS spherical roller bearings are made from NSK’s highcleanliness Z steel. This steel features greater fatigue
strength. In addition, special surface treatment makes it
more resistant to wear and more durable in a variety of
applications.
Cage design features
stronger resistance
to wear
By utilizing the space gained
from eliminating the guide ring
and improving the design
through advanced structural
analysis, cage strength has been
increased dramatically. The
high-precision roller guide function in place of the guide
ring, united with a special surface treatment, strengthens
the cage against wear and increases the limiting speeds.
Bearing Technology Center
European Technology Center
Advanced production system ensures
outstanding quality
As global leaders in the bearing industry, we have
continually invested in developing and refining our
manufacturing technology and quality control
procedures so that we are able to manufacture
bearings of exceptional quality and accuracy.
Rollers
Increased size
and number
Guide ring
Outer Ring
High-temperature
operability
Lubrication groove
and holes
Cage Flange
High limiting speed
Inner Ring
High-temperature
operability
NSK old type bearing
American Technology Center
HPS
Bearing Interior Design Comparison
Cage
High-strength
pressed steel
Special surface
treatment
Elimination of the guide ring allowed for a design
change that improves cage balance and strength.
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HPS Spherical Roller Bearing Table
B
B
ra
r
r
Fa / Fr≤e
ra
r
φd
φD
φDa
φd
φD
Nominal Outer Ring
Width C
Fa / Fr>e
X
Y
X
Y
1
Y3
0.67
Y2
φda
Static Equivalent Load
P0=Fr+Y0 Fa
The values for e, Y2, Y3 and Y0 are given
in the table below.
Cylindrical Bore
Dimensions (mm)
Tapered Bore
Basic Load Rating
d
D
B
r
(min)
Cr
Cor
40
80
90
90
85
100
100
90
110
110
100
120
120
110
130
130
120
140
140
125
150
150
130
160
160
140
170
170
150
180
180
160
190
190
170
200
180
215
200
240
215
260
230
23
23
33
23
25
36
23
27
40
25
29
43
28
31
46
31
33
48
31
35
51
31
37
55
33
39
58
36
41
60
40
43
64
43
67
46
73
53
80
58
86
64
1.1
1.5
1.5
1.1
1.5
1.5
1.1
2
2
1.5
2
2
1.5
2.1
2.1
1.5
2.1
2.1
1.5
2.1
2.1
1.5
2.1
2.1
2
2.1
2.1
2
3
3
2
3
3
2.1
3
2.1
3
2.1
3
2.1
3
3
113 000
118 000
170 000
118 000
149 000
207 000
124 000
178 000
246 000
149 000
178 000
292 000
178 000
238 000
340 000
221 000
264 000
375 000
225 000
310 000
425 000
238 000
310 000
485 000
264 000
355 000
540 000
310 000
360 000
600 000
360 000
415 000
665 000
415 000
735 000
455 000
860 000
605 000
1 030 000
685 000
1 190 000
820 000
99 500
111 000
153 000
111 000
144 000
195 000
119 000
174 000
234 000
144 000
174 000
292 000
174 000
244 000
340 000
230 000
275 000
380 000
232 000
325 000
435 000
244 000
325 000
505 000
275 000
375 000
565 000
325 000
395 000
630 000
395 000
450 000
705 000
450 000
780 000
490 000
930 000
645 000
1 120 000
765 000
1 320 000
940 000
45
50
55
60
65
70
75
80
85
90
95
100
110
120
130
(N)
Limiting Speeds (min-1)
Grease
6 700
6 000
5 300
6 000
5 000
4 500
5 600
4 500
4 300
5 300
4 500
3 800
4 800
3 800
3 600
4 300
3 600
3 200
4 000
3 200
3 000
4 000
3 200
2 800
3 600
3 000
2 600
3 400
3 000
2 400
3 200
2 800
2 400
3 000
2 200
2 800
2 000
2 600
1 900
2 400
1 700
2 200
Bearing Numbers
Oil
Cylindrical Bore
Tapered Bore (1)
8 500
7 500
6 700
7 500
6 300
5 600
7 100
5 600
5 300
6 700
5 600
4 800
6 000
4 800
4 500
5 300
4 500
4 000
5 300
4 000
3 800
5 000
4 000
3 600
4 500
3 800
3 400
4 300
4 000
3 200
4 000
3 600
3 000
3 800
2 800
3 600
2 600
3 200
2 400
3 000
2 200
2 600
22208EAE4
21308EAE4
22308EAE4
22209EAE4
21309EAE4
22309EAE4
22210EAE4
21310EAE4
22310EAE4
22211EAE4
21311EAE4
22311EAE4
22212EAE4
21312EAE4
22312EAE4
22213EAE4
21313EAE4
22313EAE4
22214EAE4
21314EAE4
22314EAE4
22215EAE4
21315EAE4
22315EAE4
22216EAE4
21316EAE4
22316EAE4
22217EAE4
21317EAE4
22317EAE4
22218EAE4
21318EAE4
22318EAE4
22219EAE4
22319EAE4
22220EAE4
22320EAE4
22222EAE4
22322EAE4
22224EAE4
22324EAE4
22226EAE4
22208EAKE4
21308EAKE4
22308EAKE4
22209EAKE4
21309EAKE4
22309EAKE4
22210EAKE4
21310EAKE4
22310EAKE4
22211EAKE4
21311EAKE4
22311EAKE4
22212EAKE4
21312EAKE4
22312EAKE4
22213EAKE4
21313EAKE4
22313EAKE4
22214EAKE4
21314EAKE4
22314EAKE4
22215EAKE4
21315EAKE4
22315EAKE4
22216EAKE4
21316EAKE4
22316EAKE4
22217EAKE4
21317EAKE4
22317EAKE4
22218EAKE4
21318EAKE4
22318EAKE4
22219EAKE4
22319EAKE4
22220EAKE4
22320EAKE4
22222EAKE4
22322EAKE4
22224EAKE4
22324EAKE4
22226EAKE4
Hole
Oil
Groove Diameter
d0H
Width W
over
incl.
18
30
40
30
40
50
5
6
7
2.5
50
65
80
65
80
100
8
10
12
5
6
8
100
120
160
120
160
200
15
20
25
10
12
15
200
250
315
400
250
315
400
—
30
35
40
40
20
20
25
25
Abutment and Fillet dimensions (mm)
(min)
47
49
49
52
54
54
57
60
60
64
65
65
69
72
72
74
77
77
79
82
82
84
87
87
90
92
92
95
99
99
100
104
104
107
109
112
114
122
124
132
134
144
da
Table 2 Number of Oil Holes
Table 1 Dimensions of Oil Grooves
and Holes
Unit: mm
Dynamic Equivalent Load
P=XFr+YFa
(max)
(max)
49
54
52
54
65
59
60
72
64
65
72
73
72
87
79
80
94
84
84
101
91
87
101
97
94
109
103
101
108
110
108
115
115
115
121
119
130
129
145
142
157
152
73
81
81
78
91
91
83
100
100
91
110
110
101
118
118
111
128
128
116
138
138
121
148
148
130
158
158
140
166
166
150
176
176
158
186
168
201
188
226
203
246
216
Da
Nominal Outer Ring
Diameter (mm)
incl.
over
C
W
3
4
Constant
—
180
250
4
6
6
315
400
500
6
6
8
630
800
1 000
8
8
8
1 250
1 600
8
8
d0H
Axial Load Factor
(min)
ra
(max)
e
Y2
Y3
70
75
77
75
89
86
81
98
93
89
98
103
98
117
111
107
126
119
111
135
129
117
134
137
126
146
145
135
142
155
142
152
163
152
172
160
184
178
206
190
222
204
1
1.5
1.5
1
1.5
1.5
1
2
2
1.5
2
2
1.5
2
2
1.5
2
2
1.5
2
2
1.5
2
2
2
2
2
2
2.5
2.5
2
2.5
2.5
2
2.5
2
2.5
2
2.5
2
2.5
2.5
0.28
0.25
0.35
0.25
0.23
0.34
0.24
0.23
0.35
0.23
0.23
0.34
0.23
0.22
0.34
0.24
0.22
0.33
0.23
0.22
0.33
0.22
0.22
0.33
0.22
0.23
0.33
0.22
0.24
0.33
0.24
0.24
0.33
0.24
0.33
0.24
0.33
0.25
0.33
0.25
0.32
0.26
3.6
3.9
2.8
3.9
4.3
2.9
4.3
4.4
2.8
4.3
4.4
2.9
4.4
4.5
3
4.2
4.6
3
4.3
4.6
3
4.5
4.6
3
4.6
4.4
3
4.6
4.3
3.1
4.3
4.3
3.1
4.3
3.1
4.3
3
4
3.1
3.9
3.1
3.8
2.4
2.7
1.9
2.7
2.9
2
2.9
3
1.9
2.9
3
2
3
3
2
2.8
3.1
2
2.9
3.1
2
3
3.1
2
3.1
3
2
3.1
2.9
2.1
2.9
2.9
2.1
2.9
2.1
2.9
2
2.7
2.1
2.7
2.1
2.6
Number
of
Holes
Mass
Y0
2.4
2.6
1.9
2.6
2.8
1.9
2.8
2.9
1.9
2.8
2.9
1.9
2.9
3
1.9
2.7
3
2
2.8
3
2
3
3
2
3
2.9
2
3
2.8
2
2.8
2.8
2
2.8
2
2.8
2
2.6
2
2.6
2
2.5
(kg)
approx
0.50
0.73
0.98
0.55
0.96
1.34
0.61
1.21
1.78
0.81
1.58
2.30
1.10
1.98
2.89
1.51
2.45
3.52
1.58
3.00
4.28
1.64
3.64
5.26
2.01
4.32
6.23
2.54
5.20
7.23
3.30
6.10
8.56
4.04
9.91
4.84
12.7
6.99
17.6
8.80
22.2
11.0
Note (1) The suffix K indicates that the bearing has a tapered bore (taper 1:12).
Remarks 1. The maximum operating temperature of standard HPS spherical roller bearings is 200˚C
2. The suffix E4 indicates that the bearing has an oil groove and holes.
(The numbers and dimensions of oil grooves and holes are shown in Tables 1 and 2.)
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