Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20S
The ACQJ32X300-20S is a double-acting JIS compact cylinder with an external extend stop, allowing on-machine end-position tuning without swapping parts. This long-stroke, made-to-order variant provides a 300mm full stroke with a 20mm adjustment window, yielding a usable extend range of 280 to 300mm. The retract stroke remains completely unaffected by the adjuster.
Because the piston area is unchanged, force output is identical to a standard ACQ of this bore, delivering 402.1N push at 0.5 MPa. The unit features a Ø16mm piston rod, PT1/8 porting, and a fixed NBR elastomer bumper at each end. The built-in magnet (-S) is compatible with reed or solid-state electronic switches for position sensing.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 300 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 ACQJ32X300-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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 ACQJ32X300-20S Is Used
Machining Fixture Clamps
Dial in the exact clamping reach on a CNC mill between setups, using the external stop to compensate for varying raw material thicknesses.
Packaging Diverter Arms
Adjust the pusher extension on a packaging line to handle different carton depths without changing the cylinder hardware.
Assembly Press Stations
Set precise trial end positions for pressing bearings, allowing operators to fine-tune the 280-300mm range directly on the assembly machine.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20S the Right Cylinder?
When sizing this actuator, the neighboring bore 25 yields 245.4N push while bore 40 provides 628.3N at 0.5 MPa, helping you verify if 402.1N is the correct fit. If exact 300mm extend and retract endpoints are fixed and never need variation, a standard ACQ32X300 will suffice without the adjuster. To order the ACQJ variant, confirm the 32mm bore, 300mm full stroke, 20mm window, -S magnet, and the default female M8x1.25 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 ACQJ32X300-20S FAQ
This 32mm bore cylinder has a 300mm full stroke with a -20mm window, giving a usable extend range of 280-300mm. It delivers 402.1N push and 301.6N pull at 0.5 MPa, 562.9N push at 0.7 MPa, and a maximum push of 82kgf at 1.0MPa. The adjuster thread is M12x1.25.
No, the threaded stop only limits how far the rod extends, shortening the forward stroke within the 280-300mm window; the retract stroke is unaffected. Because the piston area remains the same, force is identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for end-stop deceleration, so for high-speed loads an external shock absorber is recommended.
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Related AirTAC ACQJ Compact Cylinders
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