Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke70 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40
The AirTAC ACQJ32X70-40 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut. This mechanism limits the extend end position, allowing you to fine-tune the usable extend range from 30 mm up to the full 70 mm stroke directly on your machine. The retract stroke remains completely unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore.
Operating at 0.15-1.0 MPa, this 32 mm bore unit delivers a push force of 402.1 N and a pull force of 301.6 N at 0.5 MPa. It incorporates a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. The body includes sensor grooves for adding reed or solid-state switches, though this specific configuration ships without a magnet. The piston rod measures 16 mm with a PT1/8 port and a female M8x1.25 rod-end thread.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 70 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 ACQJ32X70-40
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 ACQJ32X70-40 Is Used
Machining Fixture Clamps
Dial in the exact clamping reach on a CNC fixture by adjusting the extend stop from 30 to 70 mm, accommodating different raw material thicknesses without fabricating custom spacers.
Product Changeover Stops
Rapidly reposition the end-of-stroke stop on a packaging line when switching between box sizes, using the external M12x1.25 adjuster thread to securely lock the new extend position.
Prototype Press End Points
Test various engagement depths on an assembly press by tuning the extend stroke within the 40 mm window, finding the optimal travel before committing to a final fixed-stroke cylinder.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-40 the Right Cylinder?
When sizing this 32 mm bore actuator, consider the neighbouring bores for your force requirements: a 25 mm bore provides 245.4 N push at 0.5 MPa, while a 40 mm bore yields 628.3 N. If your extend position never varies, a fixed-stroke ACQ cylinder is sufficient. To order this adjustable version, confirm the 32 mm bore, 70 mm full stroke, 40 mm adjustment window, female M8x1.25 rod thread, and whether you need the -S magnet option for 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 ACQJ32X70-40 FAQ
At 0.5 MPa, the push force is 402.1 N and the pull force is 301.6 N; at 0.7 MPa the push force is 562.9 N, with a maximum push of 82 kgf at 1.0 MPa. The full stroke is 70 mm with a 40 mm adjustment window, yielding a usable extend range of 30-70 mm. The external adjuster uses an M12x1.25 thread.
No, the external stop only changes the extend travel distance, not the piston area, so the force remains identical to a standard ACQ. The unit relies on a fixed elastomer bumper for deceleration and does not hold loads on air loss; for a fail-safe hold, use an external rod lock.
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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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