Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 30mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke30 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30S
The AirTAC ACQJ40X30-30S is a double-acting JIS compact cylinder featuring an external M12x1.25 threaded stop with a lock nut that limits the extend stroke. You get a usable extend range of 0-30 mm, while the retract stroke remains completely unaffected. Because the piston area stays the same, output force is identical to a standard ACQ of this bore.
Operating from 0.15 to 1.0 MPa, this unit delivers 628.3 N push and 527.8 N pull at 0.5 MPa. It uses a PT1/8 port, a 16 mm rod, and a fixed NBR elastomer bumper at each end for end-of-stroke deceleration. The -S option includes a piston magnet compatible with reed or solid-state electronic switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 30 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 ACQJ40X30-30S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 ACQJ40X30-30S Is Used
Machining Fixture Clamps
Dial in the exact clamping extension on a CNC fixture without machining new stop spacers for every part revision.
Carton Forming Stops
Adjust the pusher end position on the fly when switching between different carton heights on a packaging line.
Lab Test Probes
Set precise trial end positions for material testing probes, fine-tuning the 0-30 mm extend window as needed.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-30S the Right Cylinder?
When sizing this 40 mm bore actuator, note the neighbouring bores: a 32 mm bore yields 402.1 N push at 0.5 MPa, while a 50 mm bore provides 981.8 N. If your extend position never varies, a fixed-stroke ACQ cylinder is simpler and sufficient. To order this adjustable version correctly, confirm the 40 mm bore, 30 mm full stroke, 30 mm adjustment window, the -S magnet, and your required 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 ACQJ40X30-30S FAQ
This 40 mm bore cylinder has a 30 mm full stroke with a 30 mm adjustment window, giving a usable extend range of 0-30 mm. Force is unchanged from a standard ACQ: 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut limits the extend stroke only; retract is unaffected. The adjuster changes stroke length, not piston area, so force remains identical to a standard ACQ. The cylinder uses a fixed NBR bumper for deceleration, but a plain ACQ will not hold a load on air loss—add an external rod lock for fail-safe holding.
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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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