
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 35mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
This double-acting JIS compact cylinder features an external threaded stop with a lock nut that limits the EXTEND end position. You get a usable extend range of 25-35mm, letting you fine-tune the forward travel on the machine without swapping parts. The RETRACT stroke remains completely unaffected. Because the piston area stays the same, force output is identical to a standard ACQ of this bore.
Delivering 157.1N push and 117.8N pull at 0.5MPa, it uses a fixed elastomer bumper at each end for end-of-stroke deceleration. The -S magnet enables position sensing with reed or solid-state switches, while the -B male M8x1.25 rod end couples directly to your load. It operates at 30-500mm/s with an M5x0.8 port.
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 35 mm |
| Adjuster thread | M8×1.25 |
| Port size | M5×0.8 |
| 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 | M5×0.8 (F) / M8×1.25 (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 | 157 N | 118 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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. |
|---|---|
| 20 | Bore size in mm. |
| ×35 | 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 exact forward clamping depth during machine commissioning without machining custom spacers.
Quickly readjust the extend stop to accommodate different part heights on a packaging line.
Set precise pusher distances for varying component widths on automated assembly fixtures.
If you need less push force, the 16mm bore delivers 100.5N at 0.5MPa; stepping up to the 25mm bore provides 245.4N. Choose this 20mm adjustable version when setups require varying extend endpoints. If the forward position never changes, a fixed-stroke ACQ suffices. Confirm your ordering essentials: 20mm bore, 35mm full stroke, 10mm window, -S magnet, and -B male rod thread.
Quick checklist
It provides 157.1N push and 117.8N pull at 0.5MPa, 219.9N push at 0.7MPa, and a maximum push of 32kgf at 1.0MPa. The full stroke is 35mm with a 10mm window, yielding a usable extend range of 25-35mm.
No, the adjuster changes stroke length only, so force remains identical to a standard ACQ. The external M8x1.25 stop limits extend travel while retract stays fixed. It uses fixed elastomer bumpers for deceleration, and the -S magnet works with reed or electronic switches.
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