Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X150-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X150-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 150mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke150 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X150-75SB
The AirTAC ACQJ140X150-75SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the EXTEND end position. With a full stroke of 150 mm and a 75 mm adjustment window, the usable extend range runs from 75 mm up to 150 mm. The RETRACT stroke remains completely unaffected by this mechanism. Because the piston area stays the same, the output force is identical to a standard ACQ of this 140 mm bore.
This big-bore compact variant delivers 7696.9 N push force at 0.5 MPa. It includes a male-thread piston rod end (M30x1.5) for direct load coupling, a female rod-end thread (M22x2.5), and an M27x2.0 external adjuster thread. The body uses fixed NBR elastomer bumpers at each end rather than adjustable air cushions, and the integrated piston magnet (-S) supports both reed and solid-state electronic switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X150-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X150-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 150 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 ACQJ140X150-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×150 | 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 ACQJ140X150-75SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 75 to 150 mm extend position on heavy-duty stamping presses without machining new spacer blocks during product changeovers.
Large Fixture Positioning
Fine-tune the end stop on multi-model automotive welding fixtures to accommodate varying part heights rapidly on the factory floor.
Assembly Press Force
Set precise bottoming depth on large pneumatic assembly presses, using the fixed elastomer bumper to absorb the 7696.9 N impact at 0.5 MPa.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X150-75SB the Right Cylinder?
When sizing this 140 mm bore, stepping down to a 125 mm bore yields 6135.9 N push at 0.5 MPa, while stepping up to a 160 mm bore provides 10053.1 N. If your machine requires a fixed extend position and never varies, a standard ACQ cylinder without the external stopper suffices. For this adjustable model, confirm the 150 mm full stroke, the 75 mm window, the -S magnet, and the -B male rod thread (M30x1.5) when ordering.
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 ACQJ140X150-75SB FAQ
The usable extend range is 75 to 150 mm (full 150 mm stroke minus up to 75 mm). 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.
An external M27x2.0 threaded stop with a lock nut limits the extend distance without changing the piston area, so force remains identical to a standard ACQ. The fixed NBR bumper decelerates the rod near stroke end, but a plain ACQ does not hold its load on air loss; for a fail-safe hold, use an external rod lock or pilot-operated check valve.
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Related AirTAC ACQJ Compact Cylinders
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