Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 35mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke35 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S
The AirTAC ACQJ32X35-20S is a double-acting JIS compact cylinder with a 32mm bore and a 35mm full stroke. An external threaded stop with a lock nut limits the extend end position, giving a usable forward range of 15-35mm. The retract stroke remains completely unaffected by this mechanism. Because the piston area stays the same, the output force is identical to a standard ACQ of this bore, delivering 402.1N push at 0.5 MPa.
This unit includes the -S magnet for mounting reed or electronic solid-state switches directly in the body grooves. It features a 16mm rod, a female M8x1.25 rod-end thread, and a PT1/8 port. Deceleration is handled by a fixed NBR elastomer bumper at each end, ensuring compact dimensions without adjustable air cushions.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 35 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.
Theoretical Output Force (Ø32mm)
| 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.
Model Code: Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | 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).
Where the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S Is Used
Machining Fixture Stops
Dial in exact clamping reach on a CNC fixture during setup, shortening the extend stroke from 35mm down to 15mm to clear varying raw part heights.
Packaging Changeover
Adapt end-of-stroke pushing positions for different carton widths on a packaging line without swapping out the entire cylinder body.
Prototype Press Testing
Find the optimal contact pressure distance on a test rig by fine-tuning the forward stop on the fly, relying on the fixed bumper for consistent end deceleration.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S the Right Cylinder?
Choosing this 32mm bore provides 402.1N push and 301.6N pull force at 0.5 MPa. If your application requires less force, the next size down is a 25mm cylinder offering 245.4N push, while stepping up to a 40mm bore yields 628.3N push. A standard fixed-stroke ACQ is sufficient if your end position never needs tweaking. Confirm your ordering essentials: 32mm bore, 35mm full stroke, 20mm window, -S magnet, and female rod thread.
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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X35-20S FAQ
The usable extend range is 15-35mm (a 35mm full stroke minus up to a 20mm window). It delivers 402.1N push and 301.6N pull at 0.5 MPa, 562.9N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
No, the external M12x1.25 stopper only limits how far the rod extends, leaving piston area and force unchanged. The retract stroke is unaffected, and a fixed elastomer bumper handles deceleration at both ends.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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