
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X175-40B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ32X175-40B is a double-acting JIS compact cylinder featuring a 175mm stroke and a male-thread piston rod (M14x1.5) for direct load coupling. Because this 175mm length exceeds the 100mm standard maximum for a 32mm bore, it is supplied as a long-stroke made-to-order variant. An external M12x1.25 threaded stop with a lock nut lets you fine-tune the extend end position on the machine without swapping parts. The usable extend range spans 135 to 175mm, while the retract stroke remains completely unaffected.
Output force stays identical to a standard ACQ of this bore, as the adjuster alters stroke length only. At 0.5MPa it delivers 402.1N of push force and 301.6N of pull force, peaking at 82kgf at 1.0MPa. The body incorporates fixed NBR elastomer bumpers at each end for end-of-stroke deceleration rather than adjustable air cushions. Although the housing features magnetic-switch grooves, this specific configuration ships without a magnet.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X175-40B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 175 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. |
| ×175 | 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 extend position from 135 to 175mm on a CNC machining fixture to accommodate raw part tolerances without machining new spacers.
Rapidly reposition a diverting gate on a packaging conveyor during product format changes by twisting the external stop screw.
Test different end-of-stroke depths on an assembly press safely by limiting the extend stroke in 1mm increments before finalizing the mechanical setup.
When sizing this unit, consider the 32mm bore alongside its neighbors: a 25mm bore yields 245.4N push at 0.5MPa, whereas a 40mm bore provides 628.3N. If your extend end position never varies, a fixed-stroke ACQ cylinder is sufficient and avoids the adjuster overhang. For this model, confirm the 32mm bore, 175mm full stroke, 40mm adjustment window, and the male M14x1.5 rod end. Note that a plain compact cylinder drifts if air pressure drops; use an external rod lock or pilot-operated check valve for fail-safe load holding.
Quick checklist
This 32mm bore cylinder provides 402.1N push and 301.6N pull at 0.5MPa, 562.9N push at 0.7MPa, and a maximum push of 82kgf at 1.0MPa. The full stroke is 175mm, and with the 40mm adjustment window, the usable extend range is 135 to 175mm.
The M12x1.25 threaded stop and lock nut mechanically limit how far the rod extends, shortening the stroke without changing the piston area or force output. Deceleration is handled by fixed NBR elastomer bumpers at both ends, not an adjustable air cushion. This unit lacks a sensor magnet but retains switch grooves for adding reed or solid-state sensors if needed.
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