Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke125 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50S
The ACQJ32X125-50S is a double-acting JIS compact cylinder featuring a 125mm total stroke that exceeds the 100mm standard maximum for a 32mm bore, making it a long-stroke made-to-order variant. It uses an external M12x1.25 threaded stop with a lock nut to restrict the forward extend position. You can trim the forward travel by up to 50mm, yielding a usable extend range of 75-125mm. The return retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force equals that of a standard ACQ equivalent, delivering 402.1N push and 301.6N pull at 0.5MPa. The unit incorporates fixed NBR elastomer bumpers at both ends for end-of-travel deceleration rather than adjustable air cushions. Equipped with a piston magnet (-S), it supports both reed and electronic solid-state sensors housed within its body grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 125 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 ACQJ32X125-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 ACQJ32X125-50S Is Used
Machining Fixture Tuning
Dial in the exact clamping reach on a CNC machining fixture during part-changeover without machining new spacer plates.
Carton Sealing Stops
Adjust the flap-folding arm extension on a packaging line to accommodate varying box heights rapidly on the fly.
Press Trial Positions
Set trial end positions for a light-assembly press to test engagement depths before finalizing the mechanical hard stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-50S the Right Cylinder?
If you do not need to tweak the forward endpoint on the machine, a fixed-stroke ACQ cylinder suffices. For sizing, stepping down to a 25mm bore yields 245.4N push, while moving up to a 40mm bore provides 628.3N push at 0.5MPa. When ordering this unit, verify the 32mm bore, 125mm full stroke, 50mm window, -S magnet, and female M8x1.25 rod-end thread. Remember that a plain ACQ-type cylinder will not hold a load on air loss; add 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 ACQJ32X125-50S FAQ
It provides 402.1N push and 301.6N pull at 0.5MPa, 562.9N push at 0.7MPa, and a maximum push of 82kgf at 1.0MPa. The usable extend range is 75-125mm (125mm full stroke minus the 50mm window).
The M12x1.25 external threaded stop with a lock nut limits only the extend stroke length; it does not alter piston area, so force remains identical to a standard ACQ. Fixed elastomer bumpers decelerate the rod at both ends, and the -S magnet enables tracking with reed or solid-state switches.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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