Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20B 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 ACQJ40X175-20B
The ACQJ40X175-20B 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 extend travel on the machine without swapping parts, yielding a usable extend range of 155-175mm (full 175mm stroke minus up to a 20mm window). The RETRACT stroke remains unaffected. This long-stroke made-to-order variant exceeds the 100mm standard maximum for this 40mm bore, yet the piston area is unchanged, so the force is identical to a standard ACQ.
It features a 16mm piston rod with a male M14x1.5 thread end (-B) for direct load coupling, and a PT1/8 port. The R adjuster thread is M12x1.25. Fixed elastomer bumpers decelerate the piston at each end, while the body retains sensor grooves, though this specific model ships without a magnet. Operating pressure spans 0.15-1.0 MPa with speeds of 30-500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20B |
|---|---|
| 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 ACQJ40X175-20B
| 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 ACQJ40X175-20B Is Used
Machining Fixture Stops
Dial in the exact extend stop from 155 to 175mm during CNC machining fixture setups to accommodate varying part thicknesses without machining new spacers.
Product Changeover Diverter
Adjust the extend end position on a packaging conveyor diverter on the fly when switching between different carton lengths on the production line.
Assembly Press Trial
Find the optimal end position for an assembly press during initial product trials, locking the M12x1.25 adjuster nut once the perfect engagement depth is found.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20B the Right Cylinder?
When sizing this actuator, consider the adjacent bores: a 32mm bore yields 402.1N push at 0.5 MPa, while a 50mm bore provides 981.8N push at 0.5 MPa. This 40mm unit delivers 628.3N push and 527.8N pull at 0.5 MPa. If your extend travel is fixed and never requires on-machine adjustment, a standard ACQ cylinder of the same 175mm stroke would suffice. Confirm your ordering essentials: 40mm bore, 175mm full stroke, 20mm window, male M14x1.5 rod thread (-B), and no magnet. Note that a plain ACQ-type does not hold its load on air loss; for fail-safe holding, specify 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 ACQJ40X175-20B FAQ
The force is identical to a standard ACQ of the same bore because the adjuster only changes stroke length. It provides 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 usable extend range is 155-175mm (a 175mm full stroke minus up to a 20mm window).
An external threaded stop with a lock nut limits the extend stroke, allowing you to shorten the travel on the machine without changing parts; the retract stroke is unaffected. Fixed elastomer bumpers decelerate the piston at both ends. The body has sensor grooves, but this model ships without a magnet, so it cannot trigger reed or solid-state switches without modification.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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