Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20B 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 ACQJ32X45-20B
The AirTAC ACQJ32X45-20B is a JIS compact double-acting cylinder with a male-thread piston rod (M14x1.5) that couples directly to your load. An external M12x1.25 threaded stop and lock nut limits the extend end position, giving you a usable extend range of 25-45mm from the 45mm full stroke. The retract stroke remains unaffected by this adjustment. Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore: 402.1N push and 301.6N pull at 0.5MPa.
Operating at 0.15-1.0MPa with a PT1/8 port, this unit relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. The body features integrated sensor grooves for tracking position, though this specific configuration ships without a magnet. For applications with high kinetic energy or rapid cycles, adding an external shock absorber is recommended to manage impact loads.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20B |
|---|---|
| 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 ACQJ32X45-20B
| 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 ACQJ32X45-20B Is Used
Fixture Changeovers
Dial in the extend stop from 25 to 45mm during product family changeovers without machining new spacer plates.
Assembly Press Triage
Test different extend endpoints on a 32mm bore assembly press to find the exact seating depth for new components.
Carton Forming Stops
Alter the push length on a packaging flap folder to accommodate varying corrugated box heights directly at the machine.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20B the Right Cylinder?
If your mechanism needs less thrust, dropping to a 25mm bore provides 245.4N push at 0.5MPa, while stepping up to a 40mm bore yields 628.3N push. A standard fixed-stroke ACQ cylinder is sufficient if your end position never requires on-machine tweaking. When ordering this adjustable variant, confirm the 32mm bore, 45mm full stroke, 20mm adjustment window, the male rod thread, and whether you need the -S magnet option for electronic or reed switch sensing.
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 ACQJ32X45-20B FAQ
It 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 45mm with a 20mm adjustment window, allowing the extend stroke to be fine-tuned between 25 and 45mm. The retract stroke is unaffected.
An external M12x1.25 threaded stop with a lock nut limits how far the rod extends, shortening the stroke length only. Because the 32mm piston area remains the same, the output force is identical to a standard ACQ. The cylinder uses a fixed elastomer bumper for deceleration, and this model ships without a sensor magnet.
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1-Year Warranty
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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