1. No category

Linear/swivel clamp CLR
Linear/swivel clamp CLR
Key features
Functional description
The linear/swivel clamp CLR is used
for all types of clamping. Through the
combination of the linear and swivel
motion of the piston rod, it is possible
to insert and remove workpieces even
beyond the clamping range. It is
Optimal range
Uncomplicated mechanical system
Sturdy design
Long service life
Low purchasing, assembly and
maintenance costs
New: CLR with dust and welding
spatter protection
possible to choose between versions
swivelling to the right or to the left,
while the CLR also boasts a linear
stroke with diameters of 40 and
larger.
Flexible
Swivel direction can be adjusted
subsequently
Compact dimensions for tight
installation spaces
Clamping finger:
Can be ordered as an accessory
Easy to install
The port pattern corresponds to
ISO 21287, meaning that foot and
flange mountings from the standard
accessories range can be used
Female threads in the bearing and
end caps enable easy assembly of
the cylinder either directly or using
mounting accessories
Practical
Clamping finger including plug-on
rubber cap to protect sensitive
surfaces available as accessory
Clamping finger can be freely
adjusted across a full 360°
Can be repaired using set of
wearing parts
Corresponding accessories such as
tubing, flow control valves and
push-in fittings
Swivel direction
Swivel motion to the right
Swivel motion to the left
View from above of the piston rod
side with the piston rod retracted.
Clockwise swivel direction.
View from above of the piston rod
side with the piston rod retracted.
Anticlockwise swivel direction.
2
è Internet: www.festo.com/catalogue/...
Straight
Subject to change – 2014/05
Linear/swivel clamp CLR
Peripherals overview
3
1
6
5
7
4
1
2
Mounting components and accessories
1
2
3
4
5
6
7
Foot mounting
HNA
Flange mounting
FNC
Clamping finger
CLR-…-FS
Proximity sensor
SME/SMT
Slot cover
ABP-5-S
One-way flow control valve
GRLA
Push-in fitting
QS
2014/05 – Subject to change
Brief description
è Page/Internet
For bearing or end caps
14
For end caps
15
Comprising clamping finger, mounting screw, tightening bolt, lock nut and dust cap
15
Can be integrated in the cylinder profile barrel
17
For protecting the sensor cable and keeping dirt out of the sensor slots
17
For speed regulation
16
For connecting compressed air tubing with standard O.D.
quick star
è Internet: www.festo.com/catalogue/...
3
Linear/swivel clamp CLR
Type codes
u
CLR
—
12
—
10
—
R
—
P
—
A
—
—
Type
Double-acting
CLR
Linear/swivel clamp
Piston j [mm]
Clamping stroke [mm]
Swivel direction
R
L
G
Right-hand
Left-hand
Straight
1
Cushioning
P
Elastic cushioning rings/pads at both ends
Position sensing
A
For proximity sensor
Variant
K11-R8
With dust and welding spatter
protection
2
B series
3
Generation
B
1 Only with piston Ø 40 … 63 mm
2 Only with piston Ø 25 … 63 mm
3 Only with piston Ø 32 mm
4
è Internet: www.festo.com/catalogue/...
Subject to change – 2014/05
Linear/swivel clamp CLR
Technical data
Function
-N-T-W-
Diameter
12 … 63 mm
Clamping stroke
10, 20, 50 mm
www.festo.com
CLR-…
General technical data
Piston 
12
Pneumatic connection
Piston rod thread
Operating medium
Note on operating/pilot medium
Design
Cushioning
Position sensing
Type of mounting
Mounting position
Clamping range
Clamping stroke1)
Total stroke2)
Swivel direction
Swivel angle
1)
2)
[mm]
[mm]
[°]
16
20
25
32
CLR-…-K11-R8
40
50
M5
M5
M5
M5
Gx
Gx
Gx
M3
M4
M6
M6
M8
M8
M10
Compressed air to ISO 8573-1:2010 [7:4:4]
Lubricated operation possible (in which case lubricated operation will always be required)
Piston
Piston rod
Cylinder barrel
Elastic cushioning rings/pads at both ends
For proximity sensor
With through-hole
With female thread
Via accessories
Any
≥ 2 mm before the end position is reached
10
20
10
20
10
20
10
20
10
20
10
20
20
19
29
20
30
22
32
23
33
28
38
28
38
41
Right, left
Right, left, straight
90 ±4
90 ±3
90 ±2
63
Gx
M10
50
71
20
43
50
73
The clamping stroke corresponds to the linear stroke used for clamping
The total stroke comprises the clamping stroke and the swivel stroke
Operating and environmental conditions
Operating pressure
[bar]
Ambient temperature1)
[°C]
Corrosion resistance class CRC2)
1)
2)
2 … 10
–10 … +80
2
Note operating range of proximity sensors
Corrosion resistance class 2 according to Festo standard 940 070
Components subject to moderate corrosion stress. Externally visible parts with primarily decorative surface requirements which are in direct contact with a normal industrial environment or media such as coolants or
lubricating agents.
2014/05 – Subject to change
è Internet: www.festo.com/catalogue/...
5
Linear/swivel clamp CLR
Technical data
Forces [N] without clamping finger
Piston 
12
16
20
25
32
40
50
63
Theoretical clamping force at 6 bar
51
90
121
227
362
633
990
1,682
20
25
32
40
50
63
35
73
109
63
127
188
111
216
313
176
355
536
271
508
716
441
823
1,386
Forces [N] with clamping finger CLR-…-FS, 5 mm before end of stroke
Piston 
12
16
Effective clamping force at
2 bar
4 bar
6 bar
12
23
34
17
36
53
Materials
Sectional view
Basic design
1
K11-R8 With dust and welding spatter protection
2
3
2
1
4
2
5
3
2
4
Linear/swivel clamp
Basic design
K11-R8
1
2
3
4
5
–
High-alloy stainless steel
Coated wrought aluminium alloy
Smooth anodised wrought aluminium alloy
Galvanised steel
–
Nitrile rubber, polyurethane
Surface-treated high-alloy stainless steel
Piston rod
Bearing and end caps
Cylinder barrel
Flange screws
Hard scraper
Seals
Weight [g]
Piston 
Basic design
Product weight at stroke
Variant K11-R8
Product weight at stroke
6
Polyphonylene sulphide, flame-retardant
12
16
20
25
32
40
50
63
10 mm
20 mm
50 mm
135
160
–
160
190
–
335
385
–
395
455
–
685
765
–
880
985
–
–
1,650
2,115
–
2,100
2,635
10 mm
20 mm
50 mm
–
–
–
–
–
–
–
–
–
410
470
–
700
785
–
895
1,010
–
–
1,690
2,155
–
2,100
2,625
è Internet: www.festo.com/catalogue/...
Subject to change – 2014/05
Linear/swivel clamp CLR
Technical data
Maximum permissible mass moment of inertia J0
m1
l1
m2
l2
Note
The permissible mass moment of
inertia at the piston rod depends on
the cylinder's speed. The moment
can easily be calculated using this
formula. The software program “mass
moments of inertia”, available on the
electronic catalogue, can also be
used for calculation purposes.
m1xl21
) m2xl 22
3
Mass moment of inertia J as a function of the time t required for a single stroke
 12
 16
2
J0 +
-H-
2
Maximum permissible mass moment of
inertia:
= mass of the clamping finger
= length of the clamping finger
= mass of the screw
= centre distance between
screw and piston rod
10 mm stroke
20 mm stroke
 25
2
2
 20
10 mm stroke
20 mm stroke
2014/05 – Subject to change
è Internet: www.festo.com/catalogue/...
7
Linear/swivel clamp CLR
Technical data
Maximum permissible mass moment of inertia J0
m1
l1
m2
l2
Note
The permissible mass moment of
inertia at the piston rod depends on
the cylinder's speed. The moment
can easily be calculated using this
formula. The software program “mass
moments of inertia”, available on the
electronic catalogue, can also be
used for calculation purposes.
m1xl21
) m2xl 22
3
Mass moment of inertia J as a function of the time t required for a single stroke
 32
 40
2
J0 +
-H-
2
Maximum permissible mass moment of
inertia:
= mass of the clamping finger
= length of the clamping finger
= mass of the screw
= centre distance between
screw and piston rod
10 mm stroke
20 mm stroke
 63
2
2
 50
20 mm stroke
50 mm stroke
8
è Internet: www.festo.com/catalogue/...
Subject to change – 2014/05
Linear/swivel clamp CLR
Technical data
Assembling a clamping finger
Step 1
Step 2
Place the clamping finger on the
cone of the piston rod
Screw the mounting screw into the
threaded hole of the piston rod
until the clamping finger can still
just be turned
Hold the piston rod in place at the
spanner flat using a spanner
Turn the clamping finger with a
second spanner until the alignment
corresponds to the application
Step 3
Tighten the mounting screw using
the tightening torque below
Tightening torques [Nm]
Piston 
Max. tightening torque
clamping finger screw
-H-
12
16
20
25
32
40
50
63
1.2
3
12
12
24
24
47
47
Note
No calculations are required when
using the Festo clamping finger. The
accessory is matched to the cylinder
and can be operated without flow
control at the maximum permissible
pressure. When manufacturing the
clamping finger in-house, the follow­
ing values must be checked and
calculations performed.
l [mm]
Maximum permissible clamping arm length l as a function of the operating pressure p
p [bar]
2014/05 – Subject to change
 12/16
 20/25
 32/40
 50/63
è Internet: www.festo.com/catalogue/...
9
Linear/swivel clamp CLR
Technical data
Download CAD data è www.festo.com
Dimensions
Basic design  12 … 63
+ = plus clamping stroke length
++ = plus 2x clamping stroke length
Variant K11-R8  25 … 63
+ = plus clamping stroke length
++ = plus 2x clamping stroke length

AF
BG
12
16
20
25
32
40
50
63
10
12
17

L5
B
E
EE
H
KF
L1
3.25
M3
M4
–
4.75
M6
L2
L3
L4
[mm]
19.5
15
26
–
28.4
32.2
27
38.2
MM

PL
27.5
29
35.5
39.5
47
54.5
65.5
75.5
PL1
M5
Gx
R
8.9
10.15
12.7
14.2
RT
M8
M10
8.1
7.65
TG
WH
[mm]
12
16
20
25
32
40
50
63
10
60.6
62.5
79.5
82.5
101
102.5
117.9
124.9
3.5
4.6
21.8
23.5
43.8
46.55
53.05
54.3
58.8
62.75
ß1
ß2
5
7
3
10
5
13
6
17
8
K11-R8
4.9
6
8
6
6.5
15.1
15
7.4
12
6
6
9.9
16
7.5
7.5
10.3
20
18.2
19.3
23.7
26.3
31.5
36.7
44.3
51.5
è Internet: www.festo.com/catalogue/...
M4
M5
M6
M8
16
18
22
26
32.5
38
46.5
56.5
10.9
16.4
–
24.5
20.4
28.5
20.8
Subject to change – 2014/05
Linear/swivel clamp CLR
Technical data
Ordering data – Swivel direction right
Type
Piston 
[mm]
Stroke
[mm]
Part No.
Type
12
10
20
535431
535433
CLR-12-10-R-P-A
CLR-12-20-R-P-A
16
10
20
535435
535437
CLR-16-10-R-P-A
CLR-16-20-R-P-A
20
10
20
535439
535441
CLR-20-10-R-P-A
CLR-20-20-R-P-A
25
10
20
535443
535445
CLR-25-10-R-P-A
CLR-25-20-R-P-A
32
10
20
543177
543179
CLR-32-10-R-P-A-B
CLR-32-20-R-P-A-B
40
10
20
535453
535456
CLR-40-10-R-P-A
CLR-40-20-R-P-A
50
20
50
535459
535462
CLR-50-20-R-P-A
CLR-50-50-R-P-A
63
20
50
535465
535468
CLR-63-20-R-P-A
CLR-63-50-R-P-A
Ordering data – Swivel direction right, with dust and welding spatter protection
Type
Piston 
Stroke
Part No.
Type
[mm]
[mm]
25
10
20
535483
535485
CLR-25-10-R-P-A-K11-R8
CLR-25-20-R-P-A-K11-R8
32
10
20
535487
535490
CLR-32-10-R-P-A-B-K11-R8
CLR-32-20-R-P-A-B-K11-R8
40
10
20
535493
535496
CLR-40-10-R-P-A-K11-R8
CLR-40-20-R-P-A-K11-R8
50
20
50
535499
535502
CLR-50-20-R-P-A-K11-R8
CLR-50-50-R-P-A-K11-R8
63
20
50
535505
535508
CLR-63-20-R-P-A-K11-R8
CLR-63-50-R-P-A-K11-R8
2014/05 – Subject to change
è Internet: www.festo.com/catalogue/...
11
Linear/swivel clamp CLR
Technical data
Ordering data – Swivel direction left
Type
Piston 
[mm]
Stroke
[mm]
Part No.
Type
12
10
20
535432
535434
CLR-12-10-L-P-A
CLR-12-20-L-P-A
16
10
20
535436
535438
CLR-16-10-L-P-A
CLR-16-20-L-P-A
20
10
20
535440
535442
CLR-20-10-L-P-A
CLR-20-20-L-P-A
25
10
20
535444
535446
CLR-25-10-L-P-A
CLR-25-20-L-P-A
32
10
20
543178
543180
CLR-32-10-L-P-A-B
CLR-32-20-L-P-A-B
40
10
20
535454
535457
CLR-40-10-L-P-A
CLR-40-20-L-P-A
50
20
50
535460
535463
CLR-50-20-L-P-A
CLR-50-50-L-P-A
63
20
50
535466
535469
CLR-63-20-L-P-A
CLR-63-50-L-P-A
Ordering data – Swivel direction left, with dust and welding spatter protection
Type
Piston 
Stroke
Part No.
Type
[mm]
[mm]
12
25
10
20
535484
535486
CLR-25-10-L-P-A-K11-R8
CLR-25-20-L-P-A-K11-R8
32
10
20
535488
535491
CLR-32-10-L-P-A-B-K11-R8
CLR-32-20-L-P-A-B-K11-R8
40
10
20
535494
535497
CLR-40-10-L-P-A-K11-R8
CLR-40-20-L-P-A-K11-R8
50
20
50
535500
535503
CLR-50-20-L-P-A-K11-R8
CLR-50-50-L-P-A-K11-R8
63
20
50
535506
535509
CLR-63-20-L-P-A-K11-R8
CLR-63-50-L-P-A-K11-R8
è Internet: www.festo.com/catalogue/...
Subject to change – 2014/05
Linear/swivel clamp CLR
Technical data
Ordering data – Swivel direction straight
Type
Piston 
Stroke
[mm]
[mm]
Part No.
Type
40
10
20
535455
535458
CLR-40-10-G-P-A
CLR-40-20-G-P-A
50
20
50
535461
535464
CLR-50-20-G-P-A
CLR-50-50-G-P-A
63
20
50
535467
535470
CLR-63-20-G-P-A
CLR-63-50-G-P-A
Ordering data – Swivel direction straight, with dust and welding spatter protection
Type
Piston 
Stroke
Part No.
Type
[mm]
[mm]
-H-
40
10
20
535495
535498
CLR-40-10-G-P-A-K11-R8
CLR-40-20-G-P-A-K11-R8
50
20
50
535501
535504
CLR-50-20-G-P-A-K11-R8
CLR-50-50-G-P-A-K11-R8
63
20
50
535507
535510
CLR-63-20-G-P-A-K11-R8
CLR-63-50-G-P-A-K11-R8
Note
The swivel direction can easily be
adjusted subsequently.
E.g.: A CLR-12-10-R-P-A with righthand swivel can be converted to the
left-hand swivel variant
CLR-12-10-L-P-A by loosening the
guide pin and rotating the slotted
guide plate.
2014/05 – Subject to change
è Internet: www.festo.com/catalogue/...
13
Linear/swivel clamp CLR
Accessories
Foot mounting HNA
Materials:
Galvanised steel
Free of copper and PTFE
RoHS-compliant
++ = plus 2x clamping stroke length
Dimensions and ordering data
For 
AB
AH

[mm]
H14
12
16
20
25
32
40
50
63
1)
5.8
7
10
21
22
27
29
33.5
38
45
50
AO
AT
AU
SA
TR
US
XA
CRC1)
Weight
Part No.
Type
537237
537238
537239
537240
537241
537242
537243
537244
HNA-12
HNA-16
HNA-20
HNA-25
HNA-32
HNA-40
HNA-50
HNA-63
[g]
5
4.75
3
6.25
7
9
8
4
13
16
18
5
21
86.6
88.5
111.5
114.5
133
138.5
159.5
166.9
16
18
22
26
32
36
45
50
26
27.5
34.5
38.5
46
54
64
75
84.5
86.4
111.9
114.9
137.4
140.9
159.7
166.7
1
1
1
1
1
1
1
1
39
42
84
90
123
157
278
328
Corrosion resistance class 1 according to Festo standard 940 070
Components subject to low corrosion stress. Transport and storage protection. Parts that do not have primarily decorative surface requirements, e.g. in internal areas that are not visible or behind covers.
-H-
Note
The foot mounting HNA can only be
used for the variant K11-R8 with a
diameter of 40 or over.
14
è Internet: www.festo.com/catalogue/...
Subject to change – 2014/05
Linear/swivel clamp CLR
Accessories
Flange mounting FNC
j 12 … 25
j 32 … 63
Materials:
Galvanised steel
Free of copper and PTFE
RoHS-compliant
++ = plus 2x clamping stroke length
Dimensions and ordering data
For 
E
FB

[mm]
H13
12
16
20
25
32
40
50
63
1)
28
29
36
40
45
54
65
75
MF
R
TF
UF
ZF
CRC1)
Weight
Part No.
Type
537245
537246
537247
537248
174376
174377
174378
174379
FNC-12
FNC-16
FNC-20
FNC-25
FNC-32
FNC-40
FNC-50
FNC-63
[g]
5.5
8
–
6.6
7
10
9
12
32
36
45
50
40
43
55
60
64
72
90
100
50
55
70
76
80
90
110
120
79.5
81.4
103.9
106.9
131.4
132.9
150.7
157.7
1
1
1
1
1
1
1
1
79
88
141
165
221
291
536
679
Corrosion resistance class 1 according to Festo standard 940 070
Components subject to low corrosion stress. Transport and storage protection. Parts that do not have primarily decorative surface requirements, e.g. in internal areas that are not visible or behind covers.
Clamping finger CLR-…-FS
Materials: clamping finger:
12 … 40: anodised aluminium
50 … 63: high-alloy stainless steel
Mounting screw, tightening bolt, lock
nut: galvanised steel
Dust cap: neoprene
++ = plus 2x clamping stroke length
For 
B1

[mm]
12
16
20
25
32
40
50
63
D1
10
11
11
16
15
20
19
25
24
2014/05 – Subject to change
L1
+1.1/-1.2
Basic design
K11-R8
76.5
79.4
104.4
107.4
133.3
134.8
153.2
160.2
–
115.5
141.4
142.9
160.85
167.85
L7
Part No.
Type
11.8
12.25
17.5
15.5
25.75
22
32.5
27.5
535551
535552
535553
CLR-12-FS
CLR-16-FS
CLR-20/25-FS
535554
CLR-32/40-FS
535555
CLR-50/63-FS
è Internet: www.festo.com/catalogue/...
15
Linear/swivel clamp CLR
Accessories
Ordering data – One-way flow control valves
Connection
Thread
For tubing O.D.
[mm]
Technical data è Internet: grl
Material
Part No.
Type
3
4
6
3
4
6
8
Metal design
193137
193138
193139
193142
193143
193144
193145
GRLA-M5-QS-3-D
GRLA-M5-QS-4-D
GRLA-M5-QS-6-D
GRLA-x-QS-3-D
GRLA-x-QS-4-D
GRLA-x-QS-6-D
GRLA-x-QS-8-D
Gx
4
6
8
Metal design
195597
195598
195599
GRLA-F-x-QS-4-D
GRLA-F-x-QS-6-D
GRLA-F-x-QS-8-D
Gx
6
8
Metal design
162965
162966
GRLA-x-QS-6-RS-B
GRLA-x-QS-8-RS-B
M5
3
4
6
3
4
6
8
Metal design
193153
193154
193155
193156
193157
193158
193159
GRLZ-M5-QS-3-D
GRLZ-M5-QS-4-D
GRLZ-M5-QS-6-D
GRLZ-x-QS-3-D
GRLZ-x-QS-4-D
GRLZ-x-QS-6-D
GRLZ-x-QS-8-D
Material
Part No.
Type
Metal design
151161
151162
151166
151167
151168
GRLA-M5-PK-3-B
GRLA-M5-PK-4-B
GRLA-1/8-PK-3-B
GRLA-1/8-PK-4-B
GRLA-1/8-PK-6-B
For exhaust air
M5
Gx
For supply air
Gx
Ordering data – One-way flow control valves
Connection
Thread1)
For tubing I.D.
[mm]
Technical data è Internet: grla
For exhaust air
M5
Gx
1)
3
4
3
4
6
Union nut for barbed connector only with screw-in thread Gx
Technical data è Internet: pun
Ordering data – Tubing
Standard O.D. tubing
16
Flame-retardant
Material
For use in the immediate
vicinity of welding
applications
Polyurethane
è Internet: www.festo.com/catalogue/...
PUN-V0
Subject to change – 2014/05
Linear/swivel clamp CLR
Accessories
Ordering data – Proximity sensor for T-slot, magneto-resistive
Type of mounting
Switching
output
Technical data è Internet: smt
Electrical connection
Cable length
[m]
Part No.
Type
Cable, 3-wire
Plug M8x1, 3-pin
Plug M12x1, 3-pin
Cable, 3-wire
Plug M8x1, 3-pin
2.5
0.3
0.3
2.5
0.3
574335
574334
574337
574338
574339
SMT-8M-A-PS-24V-E-2,5-OE
SMT-8M-A-PS-24V-E-0,3-M8D
SMT-8M-A-PS-24V-E-0,3-M12
SMT-8M-A-NS-24V-E-2,5-OE
SMT-8M-A-NS-24V-E-0,3-M8D
Cable, 3-wire
7.5
574340
SMT-8M-A-PO-24V-E-7,5-OE
N/O contact
Inserted in the slot from above,
flush with the cylinder profile,
short design
PNP
NPN
N/C contact
Inserted in the slot from above,
flush with the cylinder profile,
short design
PNP
Electrical connection
Cable length
[m]
Part No.
Technical data è Internet: sme
Type
Cable, 3-wire
Cable, 2-wire
Plug M8x1, 3-pin
Cable, 3-wire
Plug M8x1, 3-pin
2.5
5.0
2.5
0.3
2.5
0.3
543862
543863
543872
543861
150855
150857
SME-8M-DS-24V-K-2,5-OE
SME-8M-DS-24V-K-5,0-OE
SME-8M-ZS-24V-K-2,5-OE
SME-8M-DS-24V-K-0,3-M8D
SME-8-K-LED-24
SME-8-S-LED-24
Cable, 3-wire
7.5
160251
SME-8-O-K-LED-24
Electrical connection, right
Cable length
[m]
Part No.
Technical data è Internet: nebu
Type
Straight socket, M8x1, 3-pin
Cable, open end, 3-wire
Straight socket, M12x1, 5-pin
Cable, open end, 3-wire
Angled socket, M8x1, 3-pin
Cable, open end, 3-wire
Angled socket, M12x1, 5-pin
Cable, open end, 3-wire
2.5
5
2.5
5
2.5
5
2.5
5
541333
541334
541363
541364
541338
541341
541367
541370
NEBU-M8G3-K-2.5-LE3
NEBU-M8G3-K-5-LE3
NEBU-M12G5-K-2.5-LE3
NEBU-M12G5-K-5-LE3
NEBU-M8W3-K-2.5-LE3
NEBU-M8W3-K-5-LE3
NEBU-M12W5-K-2.5-LE3
NEBU-M12W5-K-5-LE3
Part No.
Type
151680
ABP-5-S
Ordering data – Proximity sensors for T-slot, magnetic reed
Type of mounting
Switching
output
N/O contact
Inserted in the slot from above, flush with Contacting
the cylinder profile
Insertable in the slot lengthwise, flush
with the cylinder profile
Contacting
Insertable in the slot lengthwise, flush
with the cylinder profile
Contacting
N/C contact
Ordering data – Connecting cables
Electrical connection, left
Ordering data – Slot cover for T-slot
Mounting
Length
[m]
Inserted from
above
2014/05 – Subject to change
2x 0.5
è Internet: www.festo.com/catalogue/...
17