Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50
The AirTAC ACQJ40X45-50 is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 0 up to 45 mm directly on the machine without swapping components. The retract stroke remains completely unaffected by this mechanism.
Because the piston area stays the same, output force is identical to a standard ACQ of this bore, delivering 628.3 N push at 0.5 MPa. The unit features a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. It operates at speeds of 30-500 mm/s across a temperature range of -20 to +70 C, using a PT1/8 port and a 16 mm piston rod with an M8x1.25 female thread end.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 45 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 ACQJ40X45-50
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 ACQJ40X45-50 Is Used
Machine Tending Setup
Dial in the exact extend position for varying part heights on a CNC lathe loader without machining new spacers.
Carton Changeover
Adjust the pressing end-stop rapidly during packaging line size changeovers to accommodate different box formats.
Bending Trial Stops
Set trial end positions on a metal bending fixture to find the precise angle before finalizing hard stops.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50 the Right Cylinder?
If your application needs less push force, the 32 mm bore variant provides 402.1 N at 0.5 MPa, while stepping up to the 50 mm bore yields 981.8 N for heavier demands. If the exact 45 mm stroke is always required without variation, a fixed-stroke ACQ cylinder is sufficient. When ordering this adjustable model, confirm the 40 mm bore, 45 mm full stroke, 50 mm adjustment window, female rod thread, and whether you need the S magnet option for sensor grooves.
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 ACQJ40X45-50 FAQ
Push force is 628.3 N and pull is 527.8 N at 0.5 MPa, with a max push of 128 kgf at 1.0 MPa. The full stroke is 45 mm, and the -50 window allows the extend stroke to be shortened down to 0 mm, giving a usable extend range of 0-45 mm. The external adjuster thread is M12x1.25, and the port is PT1/8.
No, the adjuster changes stroke length only, so force remains identical to a standard ACQ. The cylinder uses a fixed elastomer bumper, not an adjustable air cushion. It will not hold a load if air is lost or the valve is centered; for fail-safe holding, use an external rod lock or pilot-operated check valve.
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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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