Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke75 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB
The ACQJ140X75-75SB is a double-acting JIS compact cylinder featuring an external M27x2.0 threaded stop with a lock nut. This mechanism limits the extend end position, providing a usable forward travel range of 0-75 mm from a 75 mm full stroke. The retract distance remains completely unaffected by this adjustment.
Output force mirrors a standard ACQ of identical bore size because the piston area is unchanged. Operating at 0.5 MPa yields 7696.9 N of push force and 7294.8 N of pull force. The unit includes an M30x1.5 male rod end for direct load coupling, NBR fixed elastomer bumpers for end-of-stroke deceleration, and a piston magnet compatible with reed or solid-state switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 75 mm |
| Adjuster thread | M27×2.0 |
| Port size | PT3/8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Rod thread | M22×2.5 (F) / M30×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
Theoretical Output Force (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
Model Code: Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×75 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Where the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB Is Used
Heavy Press Setup
Dialing in the exact extend contact point on a 140 mm press without machining new spacers, using the 0-75 mm window to test different material thicknesses.
Product Changeover
Adapting a large clamping station for new part families by turning the external stop screw, avoiding the need to swap out the entire actuator assembly.
Prototype Positioning
Finding the optimal end-of-stroke location on an automated welding fixture during initial runs, locking the M27x2.0 adjuster once the ideal spot is found.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB the Right Cylinder?
Selecting this 140 mm bore actuator provides 7696.9 N push at 0.5 MPa. A smaller 125 mm bore yields 6135.9 N push, whereas scaling up to 160 mm provides 10053.1 N. If your machinery never requires end-position tuning, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 75 mm full stroke, 75 mm window, PT3/8 port, S magnet, and B male rod thread.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75SB FAQ
It delivers 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The full stroke is 75 mm with a 75 mm window, allowing an adjustable extend range of 0-75 mm.
An external threaded screw physically blocks the rod from extending further, shortening the stroke without changing the piston area, so force remains identical to a standard ACQ. It uses fixed NBR bumpers rather than adjustable cushions, and because it is a pneumatic cylinder, the rod will drift on air loss unless paired with an external rod lock.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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