hsr, moja magisterka, technika liniowa
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LM Guide HSR — Four-Way Equal-Load Type
Retainer plate
LM block
End plate
End seal
LM rail
Grease nipple
Ball
Retainer plate
Inner seal (option)
Side seal
Cross Section
Fig. 1 Construction of Model HSR
Construction and Features
Balls roll in four rows of a precisely-ground raceway on an LM rail and an LM block. The end plate attached to
the LM block causes the trains of balls to circulate.
As the balls are held in place by the retainer plate, they do not fall off if the LM block is removed from the rail
(except for types HSR 8, 10, and 12).
The four trains of balls are arranged so that the contact angle is 45°, allowing each train of balls to bear an equal
rated load in all four directions: radial, reverse-radial, and the two lateral directions. This type can therefore be
used in any installation direction. Moreover, HSR enables the application of a well-balanced preload, making it
possible to increase rigidity in the four directions while maintaining a low friction coefficient. The low-profile
design and use of high-rigidity LM blocks provide stable, highly accurate linear motion.
Four-way equal load
The raceways are arranged at 45° in relation one
another, so that each train of balls bears an equal rated
load in all four directions: radial, reverse-radial, and the
two lateral directions. This type can therefore be used
in any installation directions and boasts a wide range of
uses.
Self-adjusting capability
Self-adjustment is performed automatically due to the
circular-arc groove design (face-to-face DF).
Installation errors can therefore be compensated for,
even under a preload, resulting in highly precise and
smooth linear motion.
High rigidity
The excellent balance among the four rows of
raceways enables the application of a sufficient
preload, providing the LM Guide with a high degree of
rigidity and freeing it from undesired strain.
Moreover, due to the strength of the mounting bolts
and LM block used, type HSR is in use in a wide range
of heavy-cutting machine tools.
High durability
Even under a preload or uneven load, no differential
sliding occurs to the balls, thereby enabling smooth
ball rolling. Wear is thus limited, and long-term
precision is ensured.
Stainless steel type available
Upon request, we can provide stainless steel LM
blocks, rails, and balls.
A-262
Types and Features
Standard heavy-load types
Type HSR-A
Type HSR-B
Type HSR-R
The flange of the LM block is
provided with tapped holes to enable
simple assembly, making it suitable
for use in build-up systems.
Four-bolt type
The LM blocks can be attached to a
table from below. For use with a
table in which a through hole cannot
be drilled.
Four-bolt type
The narrowed flange of the LM
block is provided with tapped holes,
making it convenient for use in build-
up systems. Can be used to replace
the former type NSR-TBA.
Four-bolt type
Standard ultra-heavy-load types
Type HSR-LA
Type HSR-LB
Type HSR-LR
While the cross-sectional dimensions
are the same as for type HSR-A, the
LM block is longer. The number of
effective balls is greater than in type
HSR-A.
Four-bolt type
While the cross-sectional dimensions
are the same as for type HSR-B, the
LM block is longer. The number of
effective balls is greater than in type
HSR-B.
Four-bolt type
While the cross-sectional dimensions
are the same as for type HSR-R, the
LM block is longer. The number of
effective balls is greater than in type
HSR-R.
Four-bolt type
A-263
Miniature four-way equal-load type
Heavy-duty four-way equal-load type
HSR 8/10/12R
HSR 100/120/150
HA/HB/HR
This series features the smallest
LM Guide models. As the LM
block is slim, it must be fastened
in place using the tapped holes
provided on the top surface.
Can be used for large machine
tools and even buildings
A-264
Load Rating and Permissible Moment in Various Directions
Load rating
Permissible moment
FIg. 2
Type HSR can bear loads in all four directions: radial,
reverse-radial, and two lateral directions.
The basic load ratings of HSR are equivalent to one
another in all four directions (radial, reverse-radial and
two lateral directions). The values are presented in the
corresponding dimension tables.
Equivalent load
An equivalent load for type HSR when loads in all four
directions are exerted on its LM block simultaneously
can be obtained using the following equation:
P
E
= P
R
(P
L
)+P
T
where
P
E
: equivalent load
FIg. 3
(N)
- In the radial direction
- In the reverse-radial direction
- In the lateral direction
P
R
: radial load
(N)
In type HSR, a single LM block can bear moments in
all directions. Table 1 presents the permissible
moments in directions M
A
, M
B
, and M
C
for a single LM
block and two LM blocks laid over one another (no
data for direction M
C
).
P
L
: reverse-radial load
(N)
P
T
: lateral load
(N)
A-265
Table 1 Static Permissible Moment
Unit: kNm
Clearance
symbol
M
A
M
B
M
C
Model No.
Single block
Double block
Single block
Double block
Single block
HSR 8
HSR 10
HSR 12
HSR 15
HSR 20
HSR 20 L
HSR 25
HSR 25 L
0.0039
0.0098
0.0333
0.07
0.16
0.27
0.27
0.46
0.026
0.062
0.20
0.37
0.82
1.4
1.4
2.4
0.0039
0.0098
0.0333
0.07
0.16
0.27
0.27
0.46
0.026
0.062
0.20
0.37
0.82
1.4
1.4
2.4
0.0088
0.0196
0.052
0.10
0.23
0.31
0.4
0.51
HSR 30
HSR 30 L
HSR 35
HSR 35 L
HSR 45
HSR 45 L
HSR 55
HSR 55 L
HSR 65
HSR 65 L
0.43
0.73
0.64
1.1
1.3
2.1
2.2
3.7
4.2
7.2
2.3
3.7
3.4
5.6
6.9
10.9
11.7
18.8
21.0
35.8
0.43
0.73
0.64
1.1
1.3
2.1
2.2
3.7
4.2
7.2
2.3
3.7
3.4
5.6
6.9
10.9
11.7
18.8
21.0
0.65
0.86
1.0
1.4
2.1
2.8
3.6
4.8
6.6
35.8
56.5
63.5
86.1
113.5
146.9
8.9
12.6
16.7
25.3
34.8
52.4
HSR 85
HSR 85 L
HSR 100
HSR 120
HSR 150
10.2
12.4
16.9
22.5
29.2
56.5
63.5
86.1
113.5
146.9
10.2
12.4
16.9
22.5
29.2
Accuracy Standards
The accuracy of type HSR is divided into five grades,
normal, high, precision, super-precision, and ultra-
precision, in accordance with the model numbers
shown in Table 2.
Normal grade
W
2
C
D
Fig. 4
LM-Rail length (mm)
Fig. 5 Relationship Between LM-Rail Length
and Running Parallelism
A-266
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LM Guide HSR — Four-Way Equal-Load Type
Retainer plate
LM block
End plate
End seal
LM rail
Grease nipple
Ball
Retainer plate
Inner seal (option)
Side seal
Cross Section
Fig. 1 Construction of Model HSR
Construction and Features
Balls roll in four rows of a precisely-ground raceway on an LM rail and an LM block. The end plate attached to
the LM block causes the trains of balls to circulate.
As the balls are held in place by the retainer plate, they do not fall off if the LM block is removed from the rail
(except for types HSR 8, 10, and 12).
The four trains of balls are arranged so that the contact angle is 45°, allowing each train of balls to bear an equal
rated load in all four directions: radial, reverse-radial, and the two lateral directions. This type can therefore be
used in any installation direction. Moreover, HSR enables the application of a well-balanced preload, making it
possible to increase rigidity in the four directions while maintaining a low friction coefficient. The low-profile
design and use of high-rigidity LM blocks provide stable, highly accurate linear motion.
Four-way equal load
The raceways are arranged at 45° in relation one
another, so that each train of balls bears an equal rated
load in all four directions: radial, reverse-radial, and the
two lateral directions. This type can therefore be used
in any installation directions and boasts a wide range of
uses.
Self-adjusting capability
Self-adjustment is performed automatically due to the
circular-arc groove design (face-to-face DF).
Installation errors can therefore be compensated for,
even under a preload, resulting in highly precise and
smooth linear motion.
High rigidity
The excellent balance among the four rows of
raceways enables the application of a sufficient
preload, providing the LM Guide with a high degree of
rigidity and freeing it from undesired strain.
Moreover, due to the strength of the mounting bolts
and LM block used, type HSR is in use in a wide range
of heavy-cutting machine tools.
High durability
Even under a preload or uneven load, no differential
sliding occurs to the balls, thereby enabling smooth
ball rolling. Wear is thus limited, and long-term
precision is ensured.
Stainless steel type available
Upon request, we can provide stainless steel LM
blocks, rails, and balls.
A-262
Types and Features
Standard heavy-load types
Type HSR-A
Type HSR-B
Type HSR-R
The flange of the LM block is
provided with tapped holes to enable
simple assembly, making it suitable
for use in build-up systems.
Four-bolt type
The LM blocks can be attached to a
table from below. For use with a
table in which a through hole cannot
be drilled.
Four-bolt type
The narrowed flange of the LM
block is provided with tapped holes,
making it convenient for use in build-
up systems. Can be used to replace
the former type NSR-TBA.
Four-bolt type
Standard ultra-heavy-load types
Type HSR-LA
Type HSR-LB
Type HSR-LR
While the cross-sectional dimensions
are the same as for type HSR-A, the
LM block is longer. The number of
effective balls is greater than in type
HSR-A.
Four-bolt type
While the cross-sectional dimensions
are the same as for type HSR-B, the
LM block is longer. The number of
effective balls is greater than in type
HSR-B.
Four-bolt type
While the cross-sectional dimensions
are the same as for type HSR-R, the
LM block is longer. The number of
effective balls is greater than in type
HSR-R.
Four-bolt type
A-263
Miniature four-way equal-load type
Heavy-duty four-way equal-load type
HSR 8/10/12R
HSR 100/120/150
HA/HB/HR
This series features the smallest
LM Guide models. As the LM
block is slim, it must be fastened
in place using the tapped holes
provided on the top surface.
Can be used for large machine
tools and even buildings
A-264
Load Rating and Permissible Moment in Various Directions
Load rating
Permissible moment
FIg. 2
Type HSR can bear loads in all four directions: radial,
reverse-radial, and two lateral directions.
The basic load ratings of HSR are equivalent to one
another in all four directions (radial, reverse-radial and
two lateral directions). The values are presented in the
corresponding dimension tables.
Equivalent load
An equivalent load for type HSR when loads in all four
directions are exerted on its LM block simultaneously
can be obtained using the following equation:
P
E
= P
R
(P
L
)+P
T
where
P
E
: equivalent load
FIg. 3
(N)
- In the radial direction
- In the reverse-radial direction
- In the lateral direction
P
R
: radial load
(N)
In type HSR, a single LM block can bear moments in
all directions. Table 1 presents the permissible
moments in directions M
A
, M
B
, and M
C
for a single LM
block and two LM blocks laid over one another (no
data for direction M
C
).
P
L
: reverse-radial load
(N)
P
T
: lateral load
(N)
A-265
Table 1 Static Permissible Moment
Unit: kNm
Clearance
symbol
M
A
M
B
M
C
Model No.
Single block
Double block
Single block
Double block
Single block
HSR 8
HSR 10
HSR 12
HSR 15
HSR 20
HSR 20 L
HSR 25
HSR 25 L
0.0039
0.0098
0.0333
0.07
0.16
0.27
0.27
0.46
0.026
0.062
0.20
0.37
0.82
1.4
1.4
2.4
0.0039
0.0098
0.0333
0.07
0.16
0.27
0.27
0.46
0.026
0.062
0.20
0.37
0.82
1.4
1.4
2.4
0.0088
0.0196
0.052
0.10
0.23
0.31
0.4
0.51
HSR 30
HSR 30 L
HSR 35
HSR 35 L
HSR 45
HSR 45 L
HSR 55
HSR 55 L
HSR 65
HSR 65 L
0.43
0.73
0.64
1.1
1.3
2.1
2.2
3.7
4.2
7.2
2.3
3.7
3.4
5.6
6.9
10.9
11.7
18.8
21.0
35.8
0.43
0.73
0.64
1.1
1.3
2.1
2.2
3.7
4.2
7.2
2.3
3.7
3.4
5.6
6.9
10.9
11.7
18.8
21.0
0.65
0.86
1.0
1.4
2.1
2.8
3.6
4.8
6.6
35.8
56.5
63.5
86.1
113.5
146.9
8.9
12.6
16.7
25.3
34.8
52.4
HSR 85
HSR 85 L
HSR 100
HSR 120
HSR 150
10.2
12.4
16.9
22.5
29.2
56.5
63.5
86.1
113.5
146.9
10.2
12.4
16.9
22.5
29.2
Accuracy Standards
The accuracy of type HSR is divided into five grades,
normal, high, precision, super-precision, and ultra-
precision, in accordance with the model numbers
shown in Table 2.
Normal grade
W
2
C
D
Fig. 4
LM-Rail length (mm)
Fig. 5 Relationship Between LM-Rail Length
and Running Parallelism
A-266
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