Airtac ACK series: rotary clamp cylinder - ACKDL25X90
Photos are for reference only. Not all models have pictures.
Description
Specifications: ACKDL25X90 is an AirTAC 25 mm rotary clamp cylinder. Left rotation is selected by the current order code. It has 90° rotation and two clamp arms. The specification and dimensions below apply to the 2022 catalog configuration identified by the individual code elements.
Product Catalog
Download Airtac Product Catalog (PDF)
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
This model code
Parameter
Details
ACKD
rotary clamp cylinder; double-arm version, 90° only
L
Left / counterclockwise rotation during the downward clamping sequence, as viewed in the catalog rotation diagram
25
25 mm nominal bore
X90
90° rotation
(thread code omitted)
M5×0.8
Design and operating features
Three guide slots maintain rotational guidance. Heat-treated alloy piston-rod construction supports service life.
Single-arm and double-arm versions are distinct order codes; ACKD is restricted to 90° rotation.
Technical specifications
Parameter
Details
Nominal bore
25 mm
Actuation
double acting
Working medium
Compressed air, filtered through a 40 μm filter element
Operating temperature
−20 to +70 °C
Port thread
M5×0.8
Operating pressure
0.15–1 MPa
Proof pressure
1.5 MPa
Rotation angle
90°
Angular tolerance
±1.5°
Total stroke
26 mm
Rotation stroke
14 mm
Straight clamping stroke
12 mm
Stroke tolerance
+1.0/0 mm
Piston speed
50–200 mm/s, subject to the load/inertia limits
Cushion
None; fit external pneumatic throttling for cushioning
Force and load selection
Parameter
Details
0.1 MPa
33.7 N theoretical clamping force
0.2 MPa
67.4 N theoretical clamping force
0.3 MPa
101.1 N theoretical clamping force
0.4 MPa
134.8 N theoretical clamping force
0.5 MPa
168.5 N theoretical clamping force
0.6 MPa
202.2 N theoretical clamping force
0.7 MPa
235.9 N theoretical clamping force
These are theoretical catalog outputs, not a rated workpiece mass. Values below the specified operating-pressure range are table references and do not extend the permitted operating range. Arm bending and rotational inertia can require a lower pressure or speed than the cylinder maximum.
Parameter
Details
Catalog standard-arm rotational inertia
7.651e-05 kg·m²
Arm-length / pressure example
At 80 mm arm length, ACK32/40 must be used below 0.49 MPa; ACK50/63 below 0.78 MPa. This example is not a full-range approval for other lengths.
Inertia / speed example
At 10⁻³ kg·m² arm inertia, ACK32/40 peak piston speed must remain below 100 mm/s; ACK50/63 below 170 mm/s.
Use the arm-length versus pressure and inertia versus maximum-speed curves for the actual bore and fixture. The catalog relates maximum piston speed to average speed by a factor of 1.6; use peak speed when checking the graph. Add the inertia of the selected arm and attached tooling. Keep the assembly within both bending and inertia limits.
Inertia calculation references
Parameter
Details
Units
Mass in kg; lengths in m; inertia I in kg·m²
Slender rod, axis at its center
I = m × a² / 12
Slender rod, divided at the rotation axis
I = (m₁ × a₁² + m₂ × a₂²) / 3
Thin rectangular plate, central perpendicular axis
I = m × (a² + b²) / 12
Cylindrical fixture offset from the axis
I = m × D² / 8 + m × L²
Total moving inertia
I_total = I_arm + I_fixture; include every moving attachment
Dimensions for this configuration
Linear drawing dimensions are in mm unless a thread or angle is stated. Letter labels retain their meaning in the corresponding catalog view. Only the current action and attachment form are selected; parenthesized single-acting values from the source are resolved to this model.
Parameter
Details
A
85
AC
65
AD
16
AE
23
B
40
BC
16
CB
76
D
14
F
26
G
35
J
4.5
JB
30
L
M6×1
LA
29.5
LD
60
P
M5×0.8
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Internal structure and principal materials
Parameter
Details
1 Socket screw
Medium-carbon steel
2 Clamp arm
Free-cutting steel
3 Profiled seal
NBR
4 O-ring
NBR
5 Piston rod
Hard-chrome-plated, ground S45C
6 Body
Aluminum alloy
7 Piston seal
NBR
8 Wear ring / pad
PTFE + graphite
9 Socket screw
Medium-carbon steel
10 Socket screw
Medium-carbon steel
11 O-ring
NBR
12 Locating pin
S45C
13 Rear cover
Aluminum alloy
14 O-ring
NBR
15 Pressure block
SCr440
16 Shaft sleeve
SCr440
17 Steel ball
Carbon steel
18 Rotary shaft
SCr440
19 Bumper
PTFE
20 Screw
Medium-carbon steel
21 Hex nut
Medium-carbon steel
Part numbers refer to this series and the illustrated configuration. The parts list describes construction; it is not a supplied spare-parts kit or an independent ordering list.
Accessories and configuration boundaries
The current ACK / ACKD code determines the single- or double-arm assembly. Custom arm design must satisfy the bending and inertia graphs. No independent replacement-arm order code is printed in this series table.
Installation and use
Use clean compressed air filtered through a 40 μm element and flush all tubing before connection. Fit meter-out flow control at the ports; rotational impact grows rapidly when speed is excessive.
Clamp only during the straight clamping stroke, after rotation is complete. The clamping face must be parallel to the workpiece and perpendicular to the cylinder axis; avoid clamping on a slope.
Keep the workpiece stationary after clamping. Prevent side loads and impacts; do not use the cylinder to straighten a workpiece.
When adjusting or removing a clamp arm, support the arm with an open-ended wrench and use the hex wrench on its fastener. Do not lock the cylinder body and transmit the tightening torque through its internal mechanism.
Protect the ports and rod against contamination and corrosion during storage. Exhaust residual air and support the load before maintenance.
Use a compact miniature push-in fitting at the body port so the fitting hex does not interfere with the clamp-arm screw on the 180° ACK or double-arm ACKD configuration.
Catalog reference weight
392.5 g. Catalog reference only; the actual product governs. This is not a measured packed shipping weight.
Product form
Specifications: ACKDL25X90 is an AirTAC 25 mm rotary clamp cylinder. Left rotation is selected by the current order code. It...
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Description
Specifications: ACKDL25X90 is an AirTAC 25 mm rotary clamp cylinder. Left rotation is selected by the current order code. It has 90° rotation and two clamp arms. The specification and dimensions below apply to the 2022 catalog configuration identified by the individual code elements.
Product Catalog
Download Airtac Product Catalog (PDF)
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
This model code
Parameter
Details
ACKD
rotary clamp cylinder; double-arm version, 90° only
L
Left / counterclockwise rotation during the downward clamping sequence, as viewed in the catalog rotation diagram
25
25 mm nominal bore
X90
90° rotation
(thread code omitted)
M5×0.8
Design and operating features
Three guide slots maintain rotational guidance. Heat-treated alloy piston-rod construction supports service life.
Single-arm and double-arm versions are distinct order codes; ACKD is restricted to 90° rotation.
Technical specifications
Parameter
Details
Nominal bore
25 mm
Actuation
double acting
Working medium
Compressed air, filtered through a 40 μm filter element
Operating temperature
−20 to +70 °C
Port thread
M5×0.8
Operating pressure
0.15–1 MPa
Proof pressure
1.5 MPa
Rotation angle
90°
Angular tolerance
±1.5°
Total stroke
26 mm
Rotation stroke
14 mm
Straight clamping stroke
12 mm
Stroke tolerance
+1.0/0 mm
Piston speed
50–200 mm/s, subject to the load/inertia limits
Cushion
None; fit external pneumatic throttling for cushioning
Force and load selection
Parameter
Details
0.1 MPa
33.7 N theoretical clamping force
0.2 MPa
67.4 N theoretical clamping force
0.3 MPa
101.1 N theoretical clamping force
0.4 MPa
134.8 N theoretical clamping force
0.5 MPa
168.5 N theoretical clamping force
0.6 MPa
202.2 N theoretical clamping force
0.7 MPa
235.9 N theoretical clamping force
These are theoretical catalog outputs, not a rated workpiece mass. Values below the specified operating-pressure range are table references and do not extend the permitted operating range. Arm bending and rotational inertia can require a lower pressure or speed than the cylinder maximum.
Parameter
Details
Catalog standard-arm rotational inertia
7.651e-05 kg·m²
Arm-length / pressure example
At 80 mm arm length, ACK32/40 must be used below 0.49 MPa; ACK50/63 below 0.78 MPa. This example is not a full-range approval for other lengths.
Inertia / speed example
At 10⁻³ kg·m² arm inertia, ACK32/40 peak piston speed must remain below 100 mm/s; ACK50/63 below 170 mm/s.
Use the arm-length versus pressure and inertia versus maximum-speed curves for the actual bore and fixture. The catalog relates maximum piston speed to average speed by a factor of 1.6; use peak speed when checking the graph. Add the inertia of the selected arm and attached tooling. Keep the assembly within both bending and inertia limits.
Inertia calculation references
Parameter
Details
Units
Mass in kg; lengths in m; inertia I in kg·m²
Slender rod, axis at its center
I = m × a² / 12
Slender rod, divided at the rotation axis
I = (m₁ × a₁² + m₂ × a₂²) / 3
Thin rectangular plate, central perpendicular axis
I = m × (a² + b²) / 12
Cylindrical fixture offset from the axis
I = m × D² / 8 + m × L²
Total moving inertia
I_total = I_arm + I_fixture; include every moving attachment
Dimensions for this configuration
Linear drawing dimensions are in mm unless a thread or angle is stated. Letter labels retain their meaning in the corresponding catalog view. Only the current action and attachment form are selected; parenthesized single-acting values from the source are resolved to this model.
Parameter
Details
A
85
AC
65
AD
16
AE
23
B
40
BC
16
CB
76
D
14
F
26
G
35
J
4.5
JB
30
L
M6×1
LA
29.5
LD
60
P
M5×0.8
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Internal structure and principal materials
Parameter
Details
1 Socket screw
Medium-carbon steel
2 Clamp arm
Free-cutting steel
3 Profiled seal
NBR
4 O-ring
NBR
5 Piston rod
Hard-chrome-plated, ground S45C
6 Body
Aluminum alloy
7 Piston seal
NBR
8 Wear ring / pad
PTFE + graphite
9 Socket screw
Medium-carbon steel
10 Socket screw
Medium-carbon steel
11 O-ring
NBR
12 Locating pin
S45C
13 Rear cover
Aluminum alloy
14 O-ring
NBR
15 Pressure block
SCr440
16 Shaft sleeve
SCr440
17 Steel ball
Carbon steel
18 Rotary shaft
SCr440
19 Bumper
PTFE
20 Screw
Medium-carbon steel
21 Hex nut
Medium-carbon steel
Part numbers refer to this series and the illustrated configuration. The parts list describes construction; it is not a supplied spare-parts kit or an independent ordering list.
Accessories and configuration boundaries
The current ACK / ACKD code determines the single- or double-arm assembly. Custom arm design must satisfy the bending and inertia graphs. No independent replacement-arm order code is printed in this series table.
Installation and use
Use clean compressed air filtered through a 40 μm element and flush all tubing before connection. Fit meter-out flow control at the ports; rotational impact grows rapidly when speed is excessive.
Clamp only during the straight clamping stroke, after rotation is complete. The clamping face must be parallel to the workpiece and perpendicular to the cylinder axis; avoid clamping on a slope.
Keep the workpiece stationary after clamping. Prevent side loads and impacts; do not use the cylinder to straighten a workpiece.
When adjusting or removing a clamp arm, support the arm with an open-ended wrench and use the hex wrench on its fastener. Do not lock the cylinder body and transmit the tightening torque through its internal mechanism.
Protect the ports and rod against contamination and corrosion during storage. Exhaust residual air and support the load before maintenance.
Use a compact miniature push-in fitting at the body port so the fitting hex does not interfere with the clamp-arm screw on the 180° ACK or double-arm ACKD configuration.
Catalog reference weight
392.5 g. Catalog reference only; the actual product governs. This is not a measured packed shipping weight.