Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20S 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 ACQJ40X175-20S
The ACQJ40X175-20S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You get a 175mm total stroke with a 20mm adjustment window, allowing the usable extend range to be fine-tuned between 155mm and 175mm directly on the machine. The retract stroke remains completely unaffected by this mechanism. Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore. This long-stroke variant exceeds the 100mm standard maximum for this bore size, making it a made-to-order item within the 32-100mm long-stroke range up to 300mm.
It features a 16mm piston rod, a PT1/8 port, and a female M8x1.25 rod-end thread. The external adjuster uses an M12x1.25 thread. Operating pressure spans 0.15 to 1.0 MPa, with a fixed NBR elastomer bumper at each end to decelerate the load near the stroke limits. The built-in piston magnet works with reed or electronic solid-state switches for position sensing.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20S |
|---|---|
| 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 ACQJ40X175-20S
| 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 ACQJ40X175-20S Is Used
Fixture Setup Variation
Dial in the exact clamping reach on machining fixtures that require slight positional tweaks without fabricating new piston rods.
Product Changeover Stops
Modify the extend endpoint rapidly on packaging lines when switching to a different carton size or product format.
Trial End Positions
Establish optimal pressing distances on test rigs by adjusting the extend limit in the 155-175mm range during process development.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20S the Right Cylinder?
Choosing this 40mm bore yields 628.3N push and 527.8N pull force at 0.5 MPa. Stepping down to a 32mm bore drops push force to 402.1N, while a 50mm bore raises it to 981.8N. If your application never requires end-position tuning, a fixed-stroke ACQ cylinder suffices. When ordering, verify the 40mm bore, 175mm full stroke, 20mm window, the S magnet option, and the default female rod thread.
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 ACQJ40X175-20S FAQ
The push force is 628.3N and pull is 527.8N at 0.5 MPa, with 879.6N push at 0.7 MPa and a maximum push of 128kgf at 1.0 MPa. The usable extend range is 155-175mm, set by the 20mm adjustment window on the 175mm full stroke.
An external M12x1.25 threaded stop with a lock nut limits the extend distance without changing the piston area, so force remains identical to a standard ACQ. A fixed elastomer bumper decelerates the load near stroke end; it does not hold the load on air loss, so use an external rod lock for fail-safe holding.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.