Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-75S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-75S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke75 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-75S
The AirTAC ACQJ32X75-75S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that restricts the extend end position. You can fine-tune the usable extend range from 0 mm up to 75 mm directly on your machine, while the retract stroke remains unaffected. Because the piston area stays the same, output force equals a standard ACQ of this bore.
This 32 mm bore unit incorporates a fixed NBR elastomer bumper at each end for end-of-stroke deceleration. It includes a built-in piston magnet (-S option) compatible with reed or electronic solid-state switches. Operating pressure spans 0.15-1.0 MPa, and the standard PT1/8 porting handles speeds of 30-500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-75S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-75S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 75 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 ACQJ32X75-75S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×75 | 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 ACQJ32X75-75S Is Used
Machining Fixture Stops
Dial in the exact extend position from 0 to 75 mm on a CNC machining fixture to accommodate different raw material lengths without swapping mechanical parts.
Packaging Changeover
Rapidly adjust the extend stroke on a carton sealing assembly during product size changeovers, using the external M12x1.25 stopper to set new end points.
Assembly Press Tuning
Test and set precise pressing depths on an electronic module assembly line by tweaking the extend limit, finding the optimal end position before finalizing the setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X75-75S the Right Cylinder?
When sizing this actuator, the 32 mm bore yields 402.1 N push and 301.6 N pull at 0.5 MPa. If your application requires less force, stepping down to a 25 mm bore provides 245.4 N push, while moving up to a 40 mm bore offers 628.3 N push. If you do not need to vary the end position, a fixed-stroke ACQ32X75 is simpler and sufficient. To order, confirm the 32 mm bore, 75 mm full stroke, 75 mm adjuster window, the -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 ACQJ32X75-75S 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 75 mm, but the external adjuster allows you to shorten the extend stroke by up to 75 mm, giving a usable extend range of 0-75 mm.
No, the external M12x1.25 threaded stop only limits how far the rod extends; it does not alter the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for deceleration and will not hold a load on air loss, so an external rod lock is needed for fail-safe holding.
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Related AirTAC ACQJ Compact Cylinders
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