Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-20
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-20 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 30mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke30 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-20
The AirTAC ACQJ40X30-20 is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You get a usable extend range of 10-30 mm, dialed in directly on the machine, while the retract stroke remains unaffected. Because the piston area stays the same, output force is identical to a standard ACQ of this bore.
This 40 mm bore unit pushes 628.3 N and pulls 527.8 N at 0.5 MPa. It features a 16 mm rod, a PT1/8 port, and fixed elastomer bumpers at both ends rather than adjustable air cushions. The body includes magnetic-switch grooves, though this specific SKU ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-20 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-20 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 30 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 ACQJ40X30-20
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 ACQJ40X30-20 Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC fixture during part changeovers without swapping out the entire cylinder body.
Carton Forming Limits
Adjust the folding arm extension on a packaging line to accommodate varying box heights on the fly.
Assembly Press Tonnage
Set precise trial end positions for a press operation to prevent over-travel when seating delicate bearings.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X30-20 the Right Cylinder?
Choose this 40 mm bore if your setup needs an extend range between 10 and 30 mm. If a fixed 30 mm extend is always sufficient, a standard ACQ40X30 avoids the external adjuster hardware. For higher force, the 50 mm bore pushes 981.8 N at 0.5 MPa; for less, the 32 mm bore provides 402.1 N. Confirm your ordering essentials: bore, full stroke, 20 mm window, female M8x1.25 rod thread, and whether you need the S magnet option for sensing.
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 ACQJ40X30-20 FAQ
This cylinder delivers a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa, with a push of 879.6 N at 0.7 MPa. The maximum push is 128 kgf at 1.0 MPa. It has a 20 mm adjustment window, giving a usable extend range of 10-30 mm.
An external M12x1.25 threaded stop with a lock nut mechanically limits the extend length, leaving retract unchanged. Force stays identical to a standard ACQ because the piston area is not altered. The cylinder uses fixed NBR bumpers, not adjustable air cushions, and it will not hold a load if air pressure is lost.
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
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