VIDEO:
30 SECOND
PART BUILDER
EXPLAINED
CLK2, Accessory, Foot
SMC's CLK2 series is a perfect choice for holding applications in either a clamped or unclamped state. CLK2 cylinders have a compact lock mechanism which minimizes the extension of the length dimension (2mm shorter), while maintaining the mounting interchangeability with the CLK1 existing product line. The CLK2 is capable of being locked at any position within the entire stroke. A dedicated solenoid valve is not required for unlocking, thus reducing the initial costs and replacement of the existing equipment.
- Accessory, Foot
- Bore sizes: ø40 to ø63
How to order
How to Order
Clamp Cylinder with Lock with Magnetic
Field Resistant Auto Switch
Rod Mounting
ø40, ø50, ø63
Series CLK2G/CLK2P
CLK2G
50
Built-in standard
magnet type
with magnetic field
resistant auto switch
Clevis width
40
50
63
40 mm
50 mm
63 mm
Bore size
Cylinder stroke
50, 75, 100, 125, 150
A Y
100
P4DWSC
CLK2P
50
Built-in strong
magnet type
with magnetic field
resistant auto switch
A Y
B
B
100
P79WSE
None
End bracket
I
IA
Y
YA
Nil
Single knuckle joint (M6 without tap)
Single knuckle joint (M6 with tap)
Double knuckle joint (M6 without tap)
Double knuckle joint (M6 with tap)
Note) Pin (for knuckle), cotter pin and flat
washer are provided as a standard for Y
and YA.
Nil
B
D
L
K
Note 2)
Option
None
Limit switch mounting base
Dog fitting
Note 1)
Foot
Pedestal (for 75, 100, 150 strokes only)
Note 1) When the dog bracket is selected, choose the
rod end bracket IA or YA (M6 with tap).
Note 2) Clevis width B is not available with mounting
base K.
Note 1) PLC: Programmable Logic Controller
Note 2) Refer to page 17 when ordering the auto switch mounting bracket assembly or switch mounting rod assembly.
P4DWSC
P4DWSE
P4DWL
P4DWZ
P79WSE
P74L
P74Z
Type
Applicable
cylinder series
Auto switch
model
Applicable
magnetic field
Electrical entry
AC magnetic field
(Single-phase
AC welding
magnetic field)
DC / AC
magnetic field
Indicator
light
Load
voltage
2-wire
(3–4)
2-wire
(1–4)
2-wire
2-wire
(1–4)
2-wire
24 VDC
24 VDC
24 VDC
100 VAC
Relay,
PLC
Applicable
load
Applicable Magnetic Field Resistant Auto Switches (Refer to page 21 through to 25 for detailed auto switch specifications.)
Pre-wired connector
Grommet
Pre-wired connector
Grommet
(Pre-wired connector)
2-color
display
2-color
display
1-color
display
Wiring
(Pin no. in use)
Solid state
switch
Reed switch
CLK2G
series
CLK2P
series
Lead wire
length
0.3 m
3 m
5 m
0.3 m
3 m
5 m
Port/By-pass piping position
∗ Refer to page 2.
B
F
Retraction locking
Extension locking
Locking direction
Number of auto switches
S
n
Nil
2 pcs.
1 pc.
“n” pcs. (n = 3, 4, 5···n)
Auto switch
P
Nil
Auto switch
model
Without auto switch,
Without switch mounting rod
Without auto switch,
With switch mounting rod
With auto switch,
With switch mounting rod
Note) Select applicable auto switch models
from the table below.
L
R
Nil
Top
Left
Right
Note 1) Viewed from the rod end.
Note 2) When the auto switch D-P79WSE is
mounted, by-pass piping and a switch
mounting rod cannot be place at the
same position.
Switch mounting rod position
1) Built-in standard (strong) magnet type with-
out auto switch and switch mounting rod
Symbol for the auto switch type is "Nil" as
shown below.
CLK2G:(Example) CLK2GA50-50Y
CLK2P:(Example) CLK2PA50-50Y
2) Built-in standard (strong) magnet type with-
out auto switch, with switch mounting rod
Symbol for the auto switch type is "P" as
shown below.
CLK2G:(Example) CLK2GA50-50Y-P
CLK2P:(Example) CLK2PA50-50Y-P
Built-in Standard (Strong)
Magnet Cylinder Part No.
A
B
16.5 mm
19.5 mm
ø40, ø50, ø63
ø50, ø63
Nil
TN
Rc
NPT
Port type
CLK2P
CLK2G
1
Clamp Cylinder with Lock Specifications
Standard Stroke
Bore size
Action
Fluid
Proof pressure
Maximum operating pressure
Minimum operating pressure
Locking action
Locking pressure
Locking direction
Lock application
Ambient and fluid temperature
Lubrication
Piston speed
Stroke length tolerance
Cushion
Thread tolerance
Mounting
Lock holding force N
Note 1)
(Max. static load)
Double acting, Single rod
Air
1.5 MPa
1.0 MPa
0.2 MPa
Spring locking
0.05 MPa
One direction (Retraction, Extension)
0.5 MPa or equivalent
Drop prevention, Position holding
Without auto switch: –10°C to 70°C
With auto switch : –10°C to 60°C
Non-lube
50 to 500 mm/s
+1.0/0
Retraction direction (Head end): With air cushion
JIS Class 2
Double clevis
Note 2)
40
629 982 1559
50 63
Note 1)Be sure to comply with guidelines in the back of page 3 when selecting cylinders.
Note 2)Pin (for clevis), cotter pin, flat washer are equipped as standard.
Clevis width
ø40, ø50, ø63
ø50, ø63
16.5 mm
19.5 mm
Retraction
locking type
Extension
locking type
Bore size (mm)
40, 50, 63
Standard stroke (mm)
50, 75, 100, 125, 150
Theoretical Output
Rod size
(mm)
Piston area
(mm
2
)
Operating
direction
Bore size
(mm)
40
50
63
16
20
20
OUT
IN
OUT
IN
OUT
IN
1260
1060
1960
1650
3120
2800
0.3
378
318
588
495
934
840
0.4
504
424
784
660
1250
1120
0.5
630
530
980
825
1560
1400
0.6
756
636
1180
990
1870
1680
Operating pressure (MPa)
Unit: N
Accessories (Options)
Symbol
Description
I
IA
B
D
L
K
Y
YA
Single knuckle joint
M6 without tap
M6 with tap
M6 without tap
M6 with tap
CLK-I04
CLK-IA04
CKB-I04
CKB-IA04
CKB-Y04
CKB-YA04
CLK-Y04
CLK-YA04
CKA-Y04
CKA-YA04
CK-B04
CK-D04
CK-L04
CKA-K075
CKA-K100
CKA-K150
—
—
—
Limit switch mounting base
Dog fitting
Foot
Pedestal
For 75 stroke
For 100 stroke
For 150 stroke
Double knuckle joint (knuckle
pin, cotter pin, flat washer
are equipped as a standard.)
Parts no.
CLK2GA/CLK2PA
series
CLK2GB/CLK2PB
series
50, 63 50, 6340
Weight (Basic weight is for a 0 mm stroke.)
Bore size (mm)
Cylinder
basic
weight
Single knuckle joint
Limit switch mounting base
Dog fitting
Foot
Pedestal
CLK2G series
CLK2P series
Additional weight per 25 mm stroke
63
B: 1.96 F: 2.02
B: 2.06 F: 2.08
0.13
50
B: 1.48 F: 1.54
B: 1.49 F: 1.55
0.11
0.20
0.34
0.22
0.12
0.24
2.04
40
B: 1.05 F: 1.11
B: 1.12 F: 1.18
0.08
0.25
0.36
Unit: kg
Note) The above values do not include the weight of the auto switch and bracket.
Calculation
Example) CLK2PB50-100Y-B
• Basic weight ··· 1.49 (ø50)
• Additional weight ··· 0.11/25 mm
• Cylinder stroke ··· 100 mm
• Double knuckle joint ··· 0.34 (Y)
1.49 + 0.11 x 100 / 25 + 0.34 = 2.27 kg
Port/By-pass Piping Position
Locking direction
B: Retraction
locking
F: Extension
locking
Symbol
Nil
2
3
4
5
6
—
—
—
Port
position
By-pass
piping
position
By-pass
piping
on left
By-pass
piping
on right
By-pass
piping
on left
By-pass
piping
on right
By-pass
piping
on top
By-pass
piping
on top
Port
on
top
Port
on
left
Port
on
right
Port
on
top
Port
on
left
Port
on
right
Port By-pass piping
CLK2P
CLK2G
Symbol
Double knuckle joint (Pin, cotter pin,
flat washer are included.)
2
Series CLK2G/CLK2P
Clamp Cylinder with Lock
With Magnetic Field Resistant Auto Switch
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