
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-10B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The ACQJ32X125-10B is a double-acting JIS compact cylinder with a 125 mm stroke, configured as a long-stroke made-to-order variant since it exceeds the 100 mm standard maximum for a 32 mm bore. It features a male-thread piston rod end (M14x1.5) for direct load coupling, and uses PT1/8 ports. An external threaded stop with a lock nut limits the EXTEND end position, giving a usable extend range of 115-125 mm (full 125 mm stroke minus up to 10 mm). The RETRACT stroke remains completely unaffected.
Because the piston area is unchanged, the force is IDENTICAL to a standard ACQ of this bore, delivering 402.1 N push and 301.6 N pull at 0.5 MPa. The unit relies on a fixed elastomer BUMPER at each end for end-of-travel deceleration rather than adjustable air cushions. The body includes magnetic-switch grooves, though this specific SKU ships without a sensor magnet.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-10B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 125 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. |
| ×125 | 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 extension between 115 and 125 mm on a CNC machining fixture without swapping out cylinder bodies during product changeovers.
Adjust the extend stop on a conveyor sorting diverter to accommodate varying box sizes, ensuring the pusher arm travels the precise distance needed.
Fine-tune the end position on a test rig by up to 10 mm to probe different sample depths, relying on the fixed elastomer bumper to soften the impact.
When sizing this cylinder, note the 32 mm bore yields 402.1 N push at 0.5 MPa; dropping to a 25 mm bore reduces push to 245.4 N, while a 40 mm bore increases push to 628.3 N. If the exact 125 mm extension is always required without variation, a fixed-stroke ACQ cylinder suffices. For this adjustable model, confirm the 32 mm bore, 125 mm full stroke, 10 mm window, the male -B rod thread, and that no -S magnet is needed. Remember that a plain cylinder does not hold its load on air loss; for a fail-safe hold, specify an external rod lock or pilot-operated check valve.
Quick checklist
This long-stroke 32 mm bore cylinder has a full stroke of 125 mm with a 10 mm adjustable window, allowing an extend range of 115-125 mm. It provides 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa. The retract stroke is unaffected.
The external M12x1.25 threaded stop with lock nut limits how far the rod extends, shortening the stroke by up to 10 mm. It changes stroke length only, so force remains identical to a standard ACQ. The cylinder uses a fixed elastomer bumper for deceleration and ships without a sensor magnet, though grooves are present for adding reed or solid-state switches.
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