Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke250 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40S
The ACQJ32X250-40S is a double-acting JIS compact cylinder with a 250mm full stroke and a built-in piston magnet (-S). An external threaded stop with a lock nut limits the extend end position, allowing you to fine-tune the usable extend travel from 210mm up to 250mm directly on the machine without swapping parts. The retract stroke remains unaffected. Because the piston area is unchanged, the force output is identical to a standard ACQ of this bore.
This made-to-order long-stroke variant exceeds the 100mm standard maximum for a 32mm bore, reaching up to the 300mm long-stroke limit. It features a 16mm piston rod, a PT1/8 port, and fixed elastomer bumpers at both ends. The integrated magnet supports position sensing using either reed or solid-state switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 250 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 ACQJ32X250-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 ACQJ32X250-40S Is Used
Multi-Fixture Machining
Set up varying end stops for different part lengths on a single CNC machining station without machining new spacers.
Carton Forming Adjustments
Dial in the exact folding stroke during packaging line product changeovers to prevent carton crushing.
Prototype Assembly Testing
Trial various extend end positions on an automated assembly rig to find the optimal pressing depth before finalizing the mechanical design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40S the Right Cylinder?
For a 32mm bore at 0.5 MPa, this cylinder delivers 402.1N push and 301.6N pull. If your application requires less force, the 25mm bore offers 245.4N push, while the 40mm bore provides 628.3N push for heavier demands. If you do not need to adjust the end position on-site, a fixed-stroke ACQ cylinder will suffice. When ordering, confirm the 32mm bore, 250mm full stroke, 40mm adjustable window, magnet (-S), 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 ACQJ32X250-40S FAQ
The push force is 402.1N and pull is 301.6N at 0.5 MPa, with a push of 562.9N at 0.7 MPa and a maximum push of 82 kgf at 1.0 MPa. The usable extend range is 210-250mm (250mm full stroke minus up to the 40mm window). The retract stroke is unaffected.
The external M12x1.25 threaded stop with a lock nut mechanically limits how far the rod extends, shortening the stroke length only. It does not change the piston area, so force remains identical to a standard ACQ. Deceleration is handled by fixed elastomer bumpers, not an adjustable air cushion.
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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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