Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75S 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 ACQJ140X75-75S
The AirTAC ACQJ140X75-75S is a double-acting, big-bore JIS compact cylinder featuring an external threaded stop with a lock nut that restricts the extend end position. With a full stroke of 75 mm and an adjustment window of 75 mm, you can fine-tune the usable extend travel anywhere from 0 mm up to 75 mm directly on your machine. The retract movement remains completely unaffected by this mechanism. Equipped with an integrated piston magnet (-S), it supports both reed and solid-state electronic switches.
Because the adjuster only limits travel and does not alter the piston face area, output force remains identical to a standard ACQ of this size. At 0.5 MPa, it delivers 7696.9 N of push force and 7294.8 N of pull force. The unit relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. For fail-safe load holding during air loss, incorporate an external rod lock or pilot-operated check valve, as the cylinder will drift if air pressure is removed.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75S |
|---|---|
| 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 ACQJ140X75-75S
| 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 ACQJ140X75-75S Is Used
Press Tonnage Calibration
Dial in exact pressing depth on heavy stamping equipment during setup, preventing over-travel without swapping out physical spacer collars.
Product Changeover Stops
Rapidly adapt extend endpoints on packaging lines when switching between different carton sizes, using the external lock nut to set new positions.
Heavy Fixture Positioning
Secure heavy industrial welding fixtures into precise clamping ranges, allowing operators to tweak the final 0-75 mm of travel on the fly.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-75S the Right Cylinder?
Selecting this 140 mm bore unit provides massive power in a compact riveted body, pushing 7696.9 N at 0.5 MPa. If your application requires slightly less force, stepping down to a 125 mm bore yields 6135.9 N of push. If you need more thrust, moving up to a 160 mm bore provides 10053.1 N. A standard fixed-stroke ACQ cylinder is sufficient if your end-stop never requires variation. Confirm your ordering requirements by specifying the 140 mm bore, 75 mm full stroke, 75 mm adjustable window, the -S magnet option, and the default female M22x2.5 rod-end 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 ACQJ140X75-75S FAQ
This cylinder provides 7696.9 N push and 7294.8 N pull force at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The usable extend range is 0-75 mm, derived from the 75 mm full stroke minus the 75 mm adjustment window.
An external M27x2.0 threaded stop with a lock nut mechanically limits the extend distance, meaning force is identical to a standard ACQ because piston area is unchanged. The cylinder uses fixed NBR elastomer bumpers for deceleration instead of adjustable air cushions, so for high-energy loads you should slow the approach or add external shock absorbers.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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