Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40B 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 ACQJ32X125-40B
The AirTAC ACQJ32X125-40B is a double-acting JIS compact cylinder with an external extend stop, configured here as a long-stroke variant exceeding the 100 mm standard maximum for a 32 mm bore. An external M12x1.25 threaded adjuster and lock nut limit the outward travel, yielding a usable extend span of 85 to 125 mm. The return stroke remains fixed at its original length.
Because the piston area is unchanged, output force equals a standard ACQ: 402.1 N push and 301.6 N pull at 0.5 MPa. The unit features a 16 mm rod with a male M14x1.5 thread end for direct load coupling, a PT1/8 port, and fixed NBR elastomer bumpers at both ends. Body sensor grooves are present, though this specific SKU ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40B |
|---|---|
| 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 ACQJ32X125-40B
| 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 ACQJ32X125-40B Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC fixture during new part setup, shifting the extend stop anywhere from 85 to 125 mm without machining new spacers.
Packaging Changeover
Reposition a carton sealing head rapidly for different box lengths by turning the external M12x1.25 adjuster nut to match the new product format.
Assembly Press Prototyping
Safely test trial end positions on an electronic assembly press, fine-tuning the 32 mm bore contact point before locking the rod into final production.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X125-40B the Right Cylinder?
For sizing context, a 25 mm bore yields 245.4 N push at 0.5 MPa, while stepping up to a 40 mm bore provides 628.3 N. If your extend position never varies, a fixed-stroke ACQ cylinder is simpler and sufficient. When ordering this unit, verify the 32 mm bore, 125 mm total stroke, 40 mm adjuster window, male M14x1.5 rod (-B), and confirm no magnet is needed.
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 ACQJ32X125-40B FAQ
It has a 125 mm full stroke with a 40 mm adjustment window, giving a usable extend range of 85-125 mm. The 32 mm bore generates 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa. The return stroke is unaffected.
The M12x1.25 threaded stop with lock nut physically limits outward travel to change stroke length only; force remains identical to a standard ACQ because piston area is unchanged. Deceleration relies on fixed NBR elastomer bumpers, not an adjustable air cushion, so for high-energy loads you should add an external shock absorber. This model lacks a magnet and will drift if air pressure is lost, requiring an external rod lock for fail-safe holding.
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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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