Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20S
The AirTAC ACQJ32X45-20S is a double-acting JIS compact cylinder with a 32mm bore and a 45mm full stroke. An external M12x1.25 threaded stop and lock nut let you fine-tune the extend end position on the machine, yielding a usable extend range of 25-45mm. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore: 402.1N push and 301.6N pull at 0.5MPa. This unit includes the -S piston magnet for position sensing and relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 45 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 ACQJ32X45-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×45 | 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 ACQJ32X45-20S Is Used
Machining Fixture Stops
Dial in the exact 25-45mm extend endpoint on a CNC machining fixture to accommodate raw part tolerances without swapping mechanical spacers.
Product Changeover Pins
Rapidly reposition the extending locating pin on an assembly line when switching between product variants, using the external M12x1.25 adjuster.
Packaging Fold Testing
Test carton fold depths on packaging machinery by tweaking the extend stroke in-machinery to find the optimal forming position before finalizing the design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20S the Right Cylinder?
If you need less push, the 25mm bore yields 245.4N at 0.5MPa, while stepping up to the 40mm bore provides 628.3N. Choose this 32mm model when your fixture setup requires precise 25-45mm extend endpoints without machining new spacers. If your end position never varies, a fixed-stroke ACQ cylinder is sufficient. Confirm your ordering essentials: 32mm bore, 45mm full stroke, 20mm window, S magnet, and the default female M8x1.25 rod-end 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 ACQJ32X45-20S FAQ
This 32mm bore cylinder operates at 0.15-1.0 MPa and provides 402.1N push and 301.6N pull at 0.5MPa, or 562.9N push at 0.7MPa, with a maximum push of 82kgf at 1.0MPa. The full stroke is 45mm with a 20mm adjustable window, allowing a usable extend range of 25-45mm. The port size is PT1/8.
An external threaded stop with a lock nut limits the extend stroke, shortening it by up to 20mm without changing the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected. Deceleration relies on fixed NBR elastomer bumpers, not adjustable air cushions, and the included -S magnet works with reed or electronic solid-state switches.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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