Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X175-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X175-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke175 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X175-20S
The AirTAC ACQJ32X175-20S is a double-acting, single-rod JIS compact cylinder built for applications requiring a tunable extend endpoint. It features an external M12x1.25 threaded stop with a lock nut on the rod-end side, allowing you to fine-tune the forward stroke on the machine without swapping parts. This -20mm window yields a usable extend range of 155 to 175mm, while the retract stroke remains completely unaffected.
As a long-stroke made-to-order variant, this 175mm unit exceeds the standard 100mm maximum for the Ø32 bore size. The piston area is unchanged by the adjuster, meaning force output is identical to a standard ACQ of this size: 402.1N push and 301.6N pull at 0.5 MPa. It includes a built-in piston magnet (-S) for position sensing and relies on fixed NBR elastomer bumpers at each end for end-of-travel deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X175-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X175-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 ACQJ32X175-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | 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 ACQJ32X175-20S Is Used
Multi-Format CNC Fixturing
Dial in the exact clamping reach on CNC machining centers handling varied part lengths, using the external stop to shift the 155-175mm extend point without reprogramming tool offsets.
Packaging Line Changeover
Rapidly adapt product reject arms or folding mechanisms on packaging conveyors during format size changes, relying on the lock nut to secure the new extended endpoint.
Assembly Press Trial Stops
Establish safe trial end positions for pressing sub-components on automated assembly lines, making minute mechanical adjustments to the stroke window before finalizing the motion controller.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X175-20S the Right Cylinder?
When sizing this actuator, stepping down to a Ø25 bore drops the 0.5 MPa push force to 245.4N, whereas stepping up to a Ø40 bore increases it to 628.3N. If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder will provide the exact same holding and force characteristics in a shorter footprint. For ordering, confirm the 32mm bore, 175mm full stroke, 20mm adjuster window, the -S magnet requirement, and the default female M8x1.25 rod-end thread. Note that a plain compact cylinder will drift and lose its load on air loss, so specify an external rod lock or pilot-operated check valve if fail-safe holding is required.
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 ACQJ32X175-20S FAQ
This 32mm bore cylinder has a 175mm full stroke with a 20mm adjustable window, giving a usable extend range of 155-175mm. Force is identical to a standard ACQ: 402.1N push and 301.6N pull at 0.5 MPa, 562.9N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa. The port size is PT1/8.
An external M12x1.25 threaded stop and lock nut mechanically limits the forward extension, shortening the stroke without altering piston area or force. The retract stroke is unaffected. Deceleration is handled by fixed elastomer bumpers, not adjustable air cushions. The included -S magnet works with both reed and electronic solid-state switches mounted in the body grooves.
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Related AirTAC ACQJ Compact Cylinders
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