Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 150mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke150 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20S
The ACQJ40X150-20S is a double-acting JIS compact cylinder featuring a 150mm long stroke and an external extend stop. A threaded screw with a lock nut lets you fine-tune the extend end position on the machine, yielding a usable forward range of 130-150mm. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays constant, output force matches a standard ACQ exactly: 628.3N push and 527.8N pull at 0.5MPa. This made-to-order 150mm variant exceeds the 100mm standard maximum for this bore. It includes a 16mm rod, an M8x1.25 female rod-end thread, and fixed NBR elastomer bumpers for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 150 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 ACQJ40X150-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 ACQJ40X150-20S Is Used
Machining Center Stops
Dial in the exact clamping reach on a CNC fixture without machining custom spacers, utilizing the 130-150mm forward travel window.
Packaging Line Changeover
Rapidly reposition a product diverting gate during format size shifts by twisting the external M12x1.25 adjuster to the required length.
Assembly Press Testing
Establish trial end positions for a pressing operation on automated lines, safely testing different engagement depths before finalizing the mechanical setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20S the Right Cylinder?
Selecting this 40mm bore provides 628.3N push at 0.5MPa, sitting between the 32mm bore (402.1N push) and the 50mm bore (981.8N push). If your equipment never requires end-position tweaking, a fixed-stroke ACQ cylinder is the simpler choice. When ordering this unit, confirm the 150mm full stroke, the 20mm adjustment window, the S magnet option, and the PT1/8 port size.
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 ACQJ40X150-20S FAQ
This cylinder generates 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The full stroke is 150mm, but the external adjuster provides a 20mm window, allowing the usable extend range to be set anywhere from 130mm up to 150mm.
No, the external M12x1.25 threaded stop changes only the extend length, not the piston area, so force remains identical to a standard ACQ. The unit uses fixed elastomer bumpers rather than adjustable air cushions. Note that a standard compact cylinder will drift if air pressure is lost, so an external rod lock is required for fail-safe load holding.
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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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