Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke175 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40SB
The AirTAC ACQJ40X175-40SB is a double-acting JIS compact cylinder with an external extend-stop mechanism. It features a 175mm total stroke and a 40mm adjustment window, allowing you to set the usable extend length anywhere from 135mm to 175mm directly on your equipment. The retract distance remains completely unaffected. Because the piston area stays constant, output force equals a standard ACQ, yielding 628.3N push at 0.5MPa. This long-stroke variant exceeds the 100mm standard maximum for bore 40, making it a made-to-order solution for deeper reach requirements.
This unit includes a male M14x1.5 piston rod end for direct load coupling and a built-in magnet (-S) for position sensing. The external adjuster utilizes an M12x1.25 thread with a lock nut to secure the modified end position. It retains the classic compact C-clip body design, fixed NBR elastomer bumpers for end-of-stroke deceleration, and integrated magnetic-switch grooves. Porting is PT1/8, and operating pressure ranges from 0.15 to 1.0MPa.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 175 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 ACQJ40X175-40SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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 ACQJ40X175-40SB Is Used
Machining Fixture Stops
Dial in the exact 135-175mm extend position on a CNC machining fixture to accommodate varying raw casting dimensions without fabricating new spacer blocks.
Packaging Line Diverters
Adjust the diverting arm endpoint on the fly during packaging product changeovers, ensuring precise routing of different carton widths.
Assembly Press Trials
Test multiple insertion depths on an assembly press by tuning the external stop nut, finding the optimal seating force before finalizing the mechanical setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40SB the Right Cylinder?
If your application requires less push force, the adjacent ACQJ32 bore provides 402.1N push at 0.5MPa, whereas stepping up to an ACQJ50 yields 981.8N. Choose this 40mm bore if 628.3N is adequate for your load. Remember that a fixed-stroke standard ACQ cylinder is sufficient if you never need to alter the extend endpoint after initial setup. To order correctly, verify the 40mm bore, 175mm full stroke, 40mm window, male rod thread (-B), and magnet (-S). Note that a plain ACQ cylinder will drift and lose its load position on air loss; for fail-safe holding, consider adding an external rod lock or pilot-operated check valve.
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 ACQJ40X175-40SB FAQ
This cylinder provides 628.3N push and 527.8N pull at 0.5MPa, and 879.6N push at 0.7MPa, with a maximum push of 128kgf at 1.0MPa. The full stroke is 175mm, but the external stop allows the usable extend range to be adjusted from 135mm to 175mm (a 40mm window).
No, the output force remains identical to a standard ACQ of the same 40mm bore because the piston area is unchanged; the external M12x1.25 threaded stop merely limits how far the rod extends. The cylinder relies on fixed elastomer bumpers for deceleration, and the included magnet works with reed or solid-state electronic switches.
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Related AirTAC ACQJ Compact Cylinders
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