Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10S
The ACQJ40X300-10S is a double-acting JIS compact cylinder built for applications requiring precise extend positioning over a long distance. As a made-to-order long-stroke variant, it provides a 300mm total stroke while incorporating an external M12x1.25 threaded stop and lock nut. This mechanism allows you to fine-tune the extend end position within a 290 to 300mm usable range directly on the machine. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force is identical to a standard ACQ of the same bore, delivering 628.3N push and 527.8N pull at 0.5 MPa. The actuator features a 16mm piston rod, a female M8x1.25 rod-end thread, and a PT1/8 port. It includes fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. The integrated -S magnet enables position detection using either reed or electronic solid-state switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 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 (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 ACQJ40X300-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ40X300-10S Is Used
Precision Material Feed Stops
Dial in the exact extend position on a long-stroke feed mechanism to accommodate different raw material lengths without machining new hard stops.
Automated Product Changeover
Quickly reconfigure the extend endpoint on a packaging line when switching between carton sizes, using the external lock nut to set the new 290-300mm limit.
Long-Reach Assembly Pressing
Trial and set the precise end position for a component pressing task on an automotive assembly fixture, ensuring optimal contact without over-travel.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10S the Right Cylinder?
Selecting this 40mm bore actuator involves balancing force and spatial constraints. If lower thrust is acceptable, a 32mm bore provides 402.1N push at 0.5 MPa; conversely, stepping up to a 50mm bore yields 981.8N push. A standard fixed-stroke ACQ is sufficient if your extend endpoint never requires variation. When ordering this cylinder, confirm the 40mm bore, 300mm full stroke, 10mm adjuster window, the -S magnet option, and the female M8x1.25 rod thread. Note that a plain compact cylinder will drift and lose its load on air loss, so an external rod lock or pilot-operated check valve is necessary for fail-safe holding.
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 ACQJ40X300-10S FAQ
This 40mm bore cylinder has a 300mm full stroke with a 10mm adjustable window, giving a usable extend range of 290-300mm. The thrust is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The port size is PT1/8.
An external M12x1.25 threaded screw with a lock nut limits the extend stroke length without altering piston area, so force remains unchanged. The retract stroke is unaffected. Deceleration relies on fixed NBR elastomer bumpers, not adjustable air cushions. The included -S magnet works with both reed and electronic solid-state switches for position sensing.
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Related AirTAC ACQJ Compact Cylinders
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