Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 30mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke30 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-30SB
The AirTAC ACQJ140X30-30SB is a double-acting, single-rod JIS compact cylinder engineered for big-bore tasks up to 300mm stroke. It features an external threaded stop with a lock nut on the extend side, allowing you to fine-tune the end position directly on the machine. The usable extend range spans 0-30mm, shortening the 30mm full stroke by up to 30mm, while the retract stroke remains completely unaffected.
Because the piston area stays constant, output force is identical to a standard ACQ of this bore, yielding 7696.9N push and 7294.8N pull at 0.5MPa. The rod end terminates in a male M30x1.5 thread for direct load coupling, and the -S magnet enables tracking via reed or solid-state switches. Deceleration relies on a fixed NBR elastomer bumper rather than an adjustable air cushion, and a plain pneumatic valve will not hold the load safely on air loss without an external rod lock.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 30 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 ACQJ140X30-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×30 | 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 ACQJ140X30-30SB Is Used
Press Tonnage Trial
Dial in the exact extend depth on a multi-stage press during material forming tests without machining custom spacers for each sheet thickness.
Heavy Fixture Changeover
Shift the extend stop rapidly when swapping large machining fixtures on an automated line, accommodating new part tolerances via the external lock nut.
Bending Roll Setup
Establish precise end positions on a heavy-duty metal bending roll, tweaking the 0-30mm window to find the exact deflection angle for new profiles.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-30SB the Right Cylinder?
Choose this big-bore 140mm unit when your setup requires heavy thrust and adaptable extend stops. Stepping down to a 125mm bore drops the 0.5MPa push force to 6135.9N, whereas stepping up to a 160mm bore raises it to 10053.1N. If the extend end position never varies, a fixed-stroke ACQ cylinder is simpler and sufficient. When ordering, confirm the 30mm full stroke, 30mm adjustment window, PT3/8 port, M27x2.0 adjuster thread, the -S magnet for sensing, and the -B male M30x1.5 rod end.
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 ACQJ140X30-30SB FAQ
It provides 7696.9N push and 7294.8N pull at 0.5MPa, 10775.7N push at 0.7MPa, and a maximum push of 1570 kgf at 1.0MPa. The full stroke is 30mm with a 30mm adjustment window, yielding a usable extend range of 0-30mm. The retract stroke is unaffected by the adjuster.
An external M27x2.0 threaded stop with a lock nut limits the extend distance without altering the piston area, meaning force remains identical to a standard ACQ. Deceleration uses a fixed NBR elastomer bumper. The cylinder will drift if air is lost or the valve is centered, so an external rod lock or pilot-operated check valve is required for fail-safe load holding.
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