
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-30 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ32X70-30 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 70mm and a 30mm adjustment window, the usable extend range spans 40-70mm. The retract stroke remains completely unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
This 32mm bore unit delivers a push force of 402.1N and pull of 301.6N at 0.5MPa. It features a 16mm piston rod, a PT1/8 port, and fixed elastomer bumpers at both ends for reliable deceleration. The body includes magnetic-switch grooves for adding reed or solid-state sensors, though this specific configuration ships without a magnet.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-30 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 70 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| 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 | M8×1.25 (F) / M14×1.5 (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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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.
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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).
Dial in the exact clamping distance on a CNC machining fixture during setup or tooling changes without machining new stop collars.
Adjust the extend position of a packaging line diverter arm to handle different box formats rapidly on the fly.
Sweep through various extend lengths on a lab test rig to find the optimal contact point before finalizing a machine design.
When sizing this actuator, consider the 25mm bore variant offering 245.4N push force, or the 40mm bore providing 628.3N push force at 0.5MPa. A fixed-stroke ACQ is sufficient if your end position never varies. To order, confirm the 32mm bore, 70mm full stroke, 30mm window, female rod-end thread M8x1.25, and whether the -S magnet option is needed.
Quick checklist
This 32mm bore cylinder provides a push force of 402.1N and a pull force of 301.6N at 0.5MPa, 562.9N push at 0.7MPa, and a maximum push of 82kgf at 1.0MPa. The full stroke is 70mm with a 30mm window, allowing an adjustable extend range of 40-70mm.
An external M12x1.25 threaded adjuster with a lock nut limits the extend length without changing the piston area, so force remains identical to a standard ACQ. Deceleration is handled by fixed elastomer bumpers at each end, not an adjustable air cushion.
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