Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X20-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X20-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 20mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke20 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X20-20SB
The AirTAC ACQJ32X20-20SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can tune the usable extend stroke anywhere from 0 up to 20 mm on the machine without swapping parts. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force equals a standard ACQ of the same bore, delivering 402.1 N push and 301.6 N pull at 0.5 MPa. This unit includes a male M14x1.5 rod-end thread for direct load coupling and a built-in piston magnet for position sensing. It uses a fixed elastomer bumper at each end rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X20-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X20-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 20 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 ACQJ32X20-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×20 | 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 ACQJ32X20-20SB Is Used
Machining Fixture Stops
Dial in the exact 0 to 20 mm extend position for clamping parts of varying widths on a CNC milling fixture without machining new stop collars.
Product Changeover Diverter
Adjust the extend stroke on a packaging line diverter gate to accommodate different carton lengths rapidly during product changeover.
Assembly Press Trial
Fine-tune the pressing depth of a 32 mm bore press during setup to test engagement limits before locking the M12x1.25 adjuster nut.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X20-20SB the Right Cylinder?
If your application needs less push force, the 25 mm bore delivers 245.4 N push at 0.5 MPa, while stepping up to the 40 mm bore provides 628.3 N. This 32 mm bore hits 562.9 N at 0.7 MPa and a maximum push of 82 kgf at 1.0 MPa. If your end position never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 20 mm full stroke, the 20 mm adjustment window, the PT1/8 port, the -S magnet for electronic or reed switches, and the -B male 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 ACQJ32X20-20SB FAQ
It delivers 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 full stroke is 20 mm with a 20 mm adjustment window, meaning the usable extend range is 0 to 20 mm. The retract stroke is unaffected.
No, the adjuster only changes the extend stroke length, not the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for end-of-stroke deceleration, not an adjustable air cushion. A plain ACQ does not hold its load on air loss; for a fail-safe hold, use an external rod lock or pilot-operated check valve.
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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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