C-Lube Linear Way MUL
Linear Way U
MUL・LWU
Ⅱ−155
Ⅱ−156
C-Lube Maintenance Free Series
Identification Number and Specification
C-Lube Linear Way MUL
MUL
Example of an identification number
The specifications of MUL and LWU series are indicated by the identification number. Indicate
the identification number, consisting of a model code, dimensions, a part code, a preload
symbol, a classification symbol, and any supplemental codes for each specification to apply.
long term maintenance free supported!
The aquamarine end plate is the
symbol of maintenance free.
Assembled set
1
Track rail
1
3
4
5
MUL
25
C2
R280
2
6
7
8
T1
H
/U
Model
Model
Page Ⅱ−159
code
2
Structure
3
Size
4
Number of slide units
Slide unit
Casing
Dimensions Page Ⅱ−159
C-Lube
Ball
Part
code
End plate
Ball retaining band
End seal
Oil hole
Linear
Way U
LWU
● Original U-shaped track rail
1
2
MUL and LWU series are the linear motion rolling guides
adopting the U-shaped track rail to greatly increase rigidity
of track rail under moment load and torsion.
● Expanded freedom of design for use as a
structure beam
Because of the high rigidity of the track rail, the track rail
can be used as a structure beam, such as a cantilever or
both-end support in the machine and equipment.
Therefore, freedom of design is expanded for user.
Ⅱ−157
Length of track rail
6
Preload amount
7
Accuracy class
8
Special specification
Preload
Page Ⅱ−161
symbol
Classification
Page Ⅱ−161
symbol
MUL・LWU
Points
5
Page Ⅱ−159
Supplemental
Page Ⅱ−162
code
● Additional machining available for
corresponding to needs
3
4
High carbon steel track rail can be machined additionally
to fix mechanical components such as a driving
mechanism on the track rail directly at user.
● Stainless steel selections superior in corrosion
resistance are listed on lineup. For details P.Ⅰ-41
The main metal components made of corrosion-resistant
stainless steel are available for small size of 25 mm and 30 mm
of track rail width. They are suitable for applications where rust
prevention oil is not preferred, such as in a cleanroom
environment.
1N=0.102kgf=0.2248lbs.
1mm=0.03937inch
Ⅱ−158
Identification Number and Specification −Model・Structure・Size・Number of Slide unit・
1
Model
C-Lube Linear Way MUL
(MUL series)
Small type
:MUL
Linear Way U(1)
(LWU series)
Small type
Standard type
:LWUL
Length of Track Rail−
Table 2 Standard and maximum lengths of track rail
2×n(Pieces)
:LWU
For applicable models and sizes, see Table 1.
Note(1)This model has no built-in C-Lube.
2
Structure
3
Size
4
Number of slide units
5
Ball retained type
Ball non-retained type
:B
E
For applicable models and sizes, see Table 1.
unit: mm
For applicable models and sizes, see Table 1.
Identification
number
:C○
Length of track rail
Indicates the number of slide units assembled on a
track rail.
:R○
Material
Small type
Model
MUL
Indicate the length of track rail in mm.
For standard and maximum lengths, see Table 2.
Standard length L (n)
Pitch of mounting holes F
E
or higher
Standard E
dimensions
below
Size
25
30
40
50
60
86
100
130
○
○
−
−
−
−
−
−
Maximum length(1)
MUL30
LWUL30…B
LWUL…B
○
○
−
−
−
−
−
−
LWU…B
−
−
○
○
○
○
−
−
LWU
−
−
○
○
○
○
○
○
105(3)
140(4)
175(5)
210(6)
245(7)
280(8)
35
17.5
4.5
22
420
(840)
120(3)
160(4)
200(5)
240(6)
280(7)
320(8)
40
20
4.5
24.5
480
(960)
LWU60…B
LWU60
300(3)
400(4)
500(5)
600(6)
700(7)
800(8)
100
50
1 000
LWU86…B
LWU86
300(3)
400(4)
500(5)
600(6)
700(7)
800(8)
100
50
1 200
LWU40…B
LWU40
180(3)
240(4)
300(5)
360(6)
420(7)
480(8)
60
30
LWU50…B
LWU50
240(3)
320(4)
400(5)
480(6)
560(7)
640(8)
80
40
−
−
−
−
720
800
LWU100
450(3)
600(4)
750(5)
900(6)
1 050(7)
1 200(8)
150
75
1 500
LWU130
450(3)
600(4)
750(5)
900(6)
1 050(7)
1 200(8)
150
75
1 500
Identification
number
Stainless steel made
Standard type
MUL25
LWUL25…B
Item
Table 1 Models and sizes of MUL and LWU series
Shape
E
L
:No symbol
25,30,40,50,60,86,100,130
F
Item
Standard length L (n)
High carbon steel made
Note(1)Length up to the value in( )can be produced. If needed, please contact
.
Remarks 1. M8 female threads for hanging bolt are provided on the track rail of size 100 model. And M10 female threads for hanging bolt are
provided on the track rail of size 130 model.
2. If not directed, E dimensions for both ends will be the same within the range of standard E dimensions. To change the dimensions,
indicate the specified rail mounting hole positions "/E" of special specification. For more information, see page Ⅲ−30.
Ⅱ−159
1N=0.102kgf=0.2248lbs.
1mm=0.03937inch
Ⅱ−160
MUL・LWU
Pitch of mounting holes F
E
Maximum length(1)
−Preload Amount・Accuracy Class−
6
Preload amount
−Special Specification−
:No symbol For details of the preload amount, see Table 3.
:T1
Standard
Light preload
8
Special specification
/E, /L○, /MA, /MN, /Q, /U○, /W○
For applicable special specifications, see Table 5.
For combination of multiple special specifications, see
Table 6.
For details of special specifications, see page Ⅲ−29.
Table 3 Preload amount
Item
Preload
type
Preload
symbol
Standard (No symbol)
Light
preload
T1
Preload
amount
N
0(1)
0.02C0
Table 5 Application of special specifications
Operational conditions
Special specification
・ Light and precise motion
・ Almost no vibrations
・ Load is evenly balanced
・ Light and precise motion
Specified rail mounting hole positions
Black chrome surface treatment
With track rail mounting bolt
Without track rail mounting bolt(3)
With C-Lube plate(3)
Upper seal
A group of multiple assembled sets
Notes(1)Applicable only to "/LR".
(2)Applicable to MUL series.
(3)Applicable to LWU series.
Note(1)Indicates zero or minimal amount of preload.
Remark: C0 indicates the basic static load rating.
7
Accuracy class
:No symbol For details of accuracy class, see Table 4.
:H
Ordinary
High
30
B
L
MA
MN
Q
U
W
25
Parallelism μm
C
H
N
/E
/L○
/MA
/MN
/Q
/U
/W○
Size
25
30
40
50
60
86
100
○
○
×
×
×
×
×
130
×
○(1)
○(1)
○
○
○
○
○
○
○(2)
○(2)
○
○
○
○
○
○
○
○
×
×
×
×
×
×
×
×
○
○
○
○
○
○
○
○
×
×
×
×
×
×
○
○
○
○
○
○
○
○
Table 6 Combination of supplemental codes
Table 4 Tolerance and allowance
D
Supplemental
code
20
15
○
○
○
○
○
−
−
○
○
○
○
○
○
○
−
−
○
○
○
○
○
E L MA MN Q U
Remarks 1. The combination of "−" shown in the table is not available.
2. When using multiple types for combination, please indicate by arranging the symbols in alphabetical order.
10
A
5
unit: mm
Class
(classification
symbol)
Ordinary
High
Ⅱ−161
0
300
600
900
1200
1500
Length of track rail L mm
Fig. 1 Parallelism in operation
MUL・LWU
(No symbol)
(H)
Item
±0.100
±0.050
Dim. H tolerance
±0.100
±0.050
Dim. N tolerance
0.050
0.040
Dim. variation of H(1)
0.050
0.040
Dim. variation of N(1)
Parallelism in
operation of the
See Fig. 1
slide unit C surface
to A surface
Parallelism in
operation of the
See Fig. 1
slide unit D surface
to B surface
Note(1)It means the size variation between slide units mounted on
the same track rail.
0
1N=0.102kgf=0.2248lbs.
1mm=0.03937inch
Ⅱ−162
Lubrication
Table 7 Dimension of slide unit with C-Lube plate
(Supplemental code /Q)
High rigidity design of C-Lube linear way MUL and LWU are
achieved by adopting a U-shaped track rail. The moment of
inertia of sectional area of track rails are shown in Table 9.
In the series of size 25 and 30 of MUL series and LWU
series, lithium-soap base grease (MULTEMP PS No.2,
KYODO YUSHI) is pre-packed, and in the series of size 40
to 130, lithium-soap base grease with extreme-pressure
additive (Alvania EP grease 2 [SHOWA SHELL SEKIYU K.
K.]) is pre-packed. Additionally, MUL series has C-Lube
placed in the recirculation part of balls, so that the interval
f o r re a p p l i c a t i n g l u b r i c a n t c a n b e e x t e n d e d a n d
maintenance works such as grease job can be reduced
significantly.
MUL series and LWU series have grease nipple or oil hole as
indicated in Table 11. Supply nozzles fit to each shapes of
grease nipple and dedicated supplying equipment (miniature
greasers) fit to oil holes are also available. For order of these
parts for lubrication, see Table 13 and Table 14.1 on page
Ⅲ−23, and Table 15 on page Ⅲ−24.
(L4)
(L1)
Table 9 Moment of inertia of sectional area of track rails
Y-axis
C-Lube
unit: mm
40
50
60
86
100
130
Remark: The dimensions of the
are indicated.
X-axis
L4
67
82
95
142
166
190
slide unit with C-Lube
68
83
100
146
170
194
at both ends
Identification number
MUL 25
MUL 30
−
−
Table 8 Dimension of slide unit with upper seal
(Supplemental code /U)
−
−
N
−
W2
−
−
−
−
−
A
B
unit: mm
Size
25
30
W2
18
22
25…B
30…B
40…B
40
50…B
50
60…B
60
86…B
86
100
130
IX
3.7×102
9.3×102
1.0×104
IY
7.5×103
1.7×104
6.8×104
6.9×104
Center of
gravity
e
mm
Rubber part of end seal
End plate
End seal
unit: mm
Size
d1
d2
25
30
0.5
1.2
1.5
Table 11 Lubrication parts and position of grease nipple
2.6
3.3
W1
(W )
6.6
2.8×104
1.7×105
8.7
6.3×104
3.9×105
10.7
10.8
2.4×105
1.6×106
14.6
5.9×105
1.4×106
3.3×106
8.8×106
18.8
23.0
Size
Grease nipple
type(1)
Applicable supply nozzle
type
Bolt size of female
threads for piping
25
Oil hole
Miniature greaser
30
40
A-5120V A-5240V
A-M4
B-5120V B-5240V
50
60
86
Grease gun available on the
JIS type 1
market
100
130
Note(1)For grease nipple specification, see Tables 14.1 and 14.2 on page Ⅲ−23.
Remark: Stainless steel grease nipple is also available. If needed, please contact
−
M4
M6
Grease nipple position
mm
W1
7
9
13
17
19
23.5
28.5
44
W
0
0
0
0
0
4.5
4
0
H3
2.9
3.75
10.5
13.5
14.5
25.5
29
35.5
MUL・LWU
Ⅱ−163
N
21.4
25.9
LWUL
LWUL
LWU
LWU
LWU
LWU
LWU
LWU
LWU
LWU
LWU
LWU
Moment of inertia of
sectional area
mm4
Casing
H3
L1
e
Size
Table 10 Oil hole specifications
d1
Moment of Inertia of Sectional Area
d2
−Special Specification−
.
1N=0.102kgf=0.2248lbs.
1mm=0.03937inch
Ⅱ−164
Dust Protection
Precaution for Use
The slide units of MUL series and LWU series are equiped
with end seals and upper seals as standard for dust
protection. However, if large amount of contaminant or dust
are floating, or if large particles of foreign substances such
as chips or sand may adhere to the track rail, it is
recommended to attach a protective cover to the linear
motion mechanism.
❶ Mounting surface, reference mounting surface and
❷ Shoulder height and corner radius of the reference
❸ Tightening torque for fixing screw
typical mounting structure
When mounting the MUL series and LWU series, properly
align the reference mounting surfaces B and D of the track
rail and slide unit with the reference mounting surface of the
table and bed and fix them. (See Fig. 2)
The reference mounting surfaces B and D and mounting
surfaces A and C are precisely ground. Machining the
mounting surface of the table and bed, such as machine or
device, to high accuracy and mounting them properly will
ensure stable linear motion with high accuracy.
Reference mounting surfaces of slide unit and track rail of
the MUL series and LWU series are the opposite side of the
mark. (See Fig. 3)
mounting surface
For the opposite corner of the mating reference mounting, it
is recommended to have relieved fillet as indicated in Fig. 4.
Recommended value for the shoulder height and corner
radius on the mating side is indicated in Table 13.
Typical tightening torque for mounting of the MUL series and
LWU series to the steel mating member material is indicated
in Table 12. When vibration and shock of the machine or
device are large, fluctuating load is large, or moment load is
applied, fix it by using the torque 1.2 to 1.5 times larger than
the value indicated in the table as necessary. If the mating
member material is cast iron or aluminum alloy, reduce the
tightening torque depending on the strength characteristics
of the mating member material.
Table 12 Tightening torque for fixing screw
Tightening torque N・m
Bolt size
Fig. 4 Corner of the mating reference mounting
D
C
A
Stainless steelmade screw
High carbon steelmade screw
−
M 2.5×0.45
0.62
M 3 ×0.5
1.1
1.8
M 4 ×0.7
2.5
4.1
−
M 5 ×0.8
8.0
−
M 6 ×1
13.6
−
M 8 ×1.25
32.7
−
M10 ×1.5
63.9
Note(1)The tightening torque is calculated based on strength
division 12.9 and property division A2-70.
B
Fig. 2 Reference mounting surface and typical mounting structure
Table 13 Shoulder height and corner radius of the reference mounting surface
Mark
h2
B
R2
Track rail
h1
Reference
mounting surface
R1
R1
R2
Mounting part of track rail
D
Mark
unit: mm
Slide unit
Reference
mounting surface
Fig. 3 Reference mounting surface
Size
Mounting part of slide unit
Shoulder height
Corner radius
R1(Maximum)
h1
25
1.5
0.2
30
2.5
0.2
40
3
0.5
50
3
0.5
60
3
0.5
86
4
0.5
100
4
0.5
130
5
1
Note(1)In sizes 25 and 30, provide a relieved fillet as shown in Fig. 4.
Ⅱ−165
Mounting part of track rail
Shoulder height
Corner radius
h2
R2(Maximum)(1)
−
2.5
3
5
7
9
11
13
14
−
1
2
2
2
1
2
1N=0.102kgf=0.2248lbs.
1mm=0.03937inch
Ⅱ−166
MUL・LWU
Mounting part of slide unit
C-Lube Linear Way MUL Small type
MUL ・ LWUL
(L4)
N
W2
Shape
W5
50
100
60
130
Identification number
MUL series
MUL 25
LWU series
(No C-Lube)
H4
Dimensions of track rail
mm
Appended mounting bolt
for track rail(3)
mm
N
W2
W3
W4
L1
L2
L3
L4
M1×
depth
H3
W
H4
H5
W5
W6
d3
d4
h
−
0.013
0.87
9
19.4
14
−
7
31
12
22
−
M 3× 5
2.9
24.9
6.7
3.2
9
8
2.9
4.8
1.39
12
23.9
18
−
9
38
14
28.6
−
M 4× 7
3.75
29.9
8.7
4.5
12
9
2.9
24
33
26
18
4
55
18
31.5
59 M 3× 5 10.5
40
19
5
18
11
30
42
34
25
4.5
70
25
42.8
73 M 4× 6 13.5
50
25
6
25
35
49
38
28
5
83
28
52.4
88 M 5× 8 14.5
60
30
8
130
46
93
134 M 6×12 25.5
86
42
99.5
−
0.028
30…B
−
0.029
−
LWU
40…B
−
−
LWU
40(2)
−
−
LWU
50…B
−
−
LWU
50(2)
−
−
LWU
60…B
−
−
LWU
60(2)
−
−
LWU
86…B
−
−
LWU
86(2)
−
−
LWU
100(2)
−
LWU
130(2)
2.65
0.12
2.66
4.06
0.27
4.08
6.66
0.40
6.69
1.32
14.1
48
71
56
46
5
−
2.20
21.5
58
82
65
50
7.5 154
50 111
158 M 8×15 29
−
4.49
33.0
72
109
88
70
9
70 132
182 M10×20 35.5
178
130
Notes(1)Track rail lengths L are shown in Table 2 on page Ⅱ−160.
(2)The balls are not retained.
(3)The appended track rail mounting bolts are hexagon socket head bolts equivalent to JIS B 1176 or JCIS10-70 cross-recessed pan
head screw for precision equipment. For the size 25 and 30 series, stainless steel bolts are appended.
Track rail mounting bolts are not appended for MUL series.
(4)The direction of basic dynamic load rating (C), basic static load rating (C0), and static moment rating (T0, TX, TY) are shown in the
sketches below. The upper values of TX and TY are for one slide unit and the lower values are for two slide units in close contact.
(5)The shapes of grease nipple vary by size. The specifications are shown in Table 11 on page Ⅱ−164.
Remark: The specification of oil hole is shown in Table 10 on page Ⅱ−164.
C0
T0
TX
TY
N
N
N・m
N・m
N・m
Cross-recessed pan head
screw for precision
equipment
M 2.5 × 6
1 770
2 840
20.3
10.1
53.7
8.4
45.0
40
M 2.5× 6
2 280
3 810
34.9
16.9
87.5
14.2
73.4
3.1 30
60
M3 ×8
(Not appended)
8 410
9 780
134
53.0
351
53.0
351
8
4.1 40
80
M 4 ×10
(Not appended)
13 500
15 800
280
114
711
114
711
9.5
5.4 50
100
M 5 ×12
(Not appended)
18 800
21 600
425
181
1 150
181
1 150
11
7
50
100
M 6 ×16
(Not appended)
41 400
51 500
1 470
764
4 120
764
4 120
14
9
75
150
M 8 ×20
(Not appended)
54 600
68 500
2 230
1 210
6 460
1 210
6 460
17.5 10.6 75
150
M10 ×25
(Not appended)
70 300
88 800
3 920
1 830
9 630
1 830
9 630
Preload symbol
Classification symbol
Supplemental code
T1
H
/Q
6
7
8
Bolt size×R
1.6 17.5
35
5
2.7 20
3.4
6.5
12.5
4.5
28
16
5.5
13
46
20
7
52
17
50
24.5
9
65
20
70
30
E
Example of identification number of assembled set
Model code
MUL
1
1
C, C0
T0
TX
TY
2
Model
MUL
LWUL…B
LWU(…B)
Dimensions
Part code
Standard type
Size
Model code
25 C2 R280
2
3
3
Small type
25, 30, 40, 50, 60, 86, 100, 130
Ⅱ−167
Static moment rating(4)
C
F
11
Basic dynamic Basic static
load rating(4) load rating(4)
4
5
Number of slide unit(2)
4
Length of track rail(280 mm)
5
Structure
B
No symbol
6
7
Ball retained type
Ball non-retained type
Preload amount
No symbol Standard
Light preload
T1
8
Special specification
E, LR, MA, MN, Q, U, W
Accuracy class
No symbol
H
Ordinary
High
1N=0.102kgf=0.2248lbs.
1mm=0.03937inch
Ⅱ−168
MUL・LWU
H
LWUL
MUL 30
Dimensions of slide unit
mm
Dimensions of
assembly
mm
Track
rail
kg/m
25…B
E
L(1)
Slide
unit
kg
LWUL
F
LWU(…B)
MUL
LWUL…B
Mass(Ref.)
E
W
Interchangeable
40
86
d3
W6
W5
W6
W
Size
L2
d4
H
H
Standard type
LWU(…B)
L3
Grease
nipple(5)
W3
h
30
W4
H3
25
Size
4−M1×depth
Oil hole
W4
H3
2−M1×depth
(L1)
W2
H5
Shape
N