Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50SB 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 ACQJ140X75-50SB
The AirTAC ACQJ140X75-50SB is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that limits the extend end position. You can tune the usable extend stroke on the machine from 25 mm up to the full 75 mm, while the retract stroke remains completely unaffected. This big-bore compact unit handles standard strokes up to 300 mm.
Because the piston area is unchanged by the adjuster, the output force is identical to a standard ACQ of this bore. The Ø32 mm piston rod uses an M30x1.5 male thread to couple directly to your load. The body incorporates fixed NBR elastomer bumpers at each end and magnetic-switch grooves, with the included -S magnet enabling detection by reed or solid-state electronic sensors.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50SB |
|---|---|
| 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 ACQJ140X75-50SB
| 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 ACQJ140X75-50SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 25 to 75 mm extend position during heavy press commissioning without machining new spacers or changing hardware.
Large Fixture Changeover
Accommodate varying large-product dimensions on machining lines by rapidly turning the external M27x2.0 adjuster to shift the end stop.
Assembly Machine Trials
Establish trial end positions for clamping bulky assemblies, relying on the fixed elastomer bumper to decelerate the rod near stroke end.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-50SB the Right Cylinder?
For lower force needs, the Ø100 bore delivers 3927.0 N push at 0.5 MPa, whereas the Ø160 variant provides 10053.1 N push. If your end position never varies, a fixed-stroke ACQ cylinder is simpler. When ordering this adjustable version, confirm the 140 mm bore, 75 mm full stroke, 50 mm window, the -S magnet, and the -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 ACQJ140X75-50SB 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 50 mm window, yielding a usable extend range of 25-75 mm. The retract stroke is unaffected.
The external threaded stop with a lock nut physically limits how far the rod extends, shortening the stroke length only. It does not alter the piston area, so the output force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers, and a plain ACQ will not hold its load on air loss; for fail-safe holding, add an external rod lock.
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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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