Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-30SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 25mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke25 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-30SB
The AirTAC ACQJ40X25-30SB 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 0-25 mm (full 25 mm stroke minus the 30 mm window), while the retract stroke remains unaffected. The M12x1.25 adjuster thread allows precise on-machine end-position tuning without swapping parts.
Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore: 628.3 N push and 527.8 N pull at 0.5 MPa. This 40 mm bore unit features a 16 mm rod, PT1/8 port, fixed NBR elastomer bumpers at both ends, and a male M14x1.5 rod-end thread for direct load coupling. The included -S magnet works with reed or solid-state switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-30SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 25 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 ACQJ40X25-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 ACQJ40X25-30SB Is Used
Machining Fixture Clamps
Dial in the exact clamping extension on a CNC fixture during setup, allowing rapid accommodation of varying raw material thicknesses without machining new stop blocks.
Assembly Line Product Changeover
Quickly reposition the extend end stop for a new product variant on an automated assembly line, reducing downtime between runs using the external lock nut.
Carton Sealing Presses
Fine-tune the pressing stroke on packaging equipment to handle different carton heights, ensuring consistent sealing force without bottoming out the mechanism.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-30SB the Right Cylinder?
If you need slightly less push force, the adjacent 32 mm bore yields 402.1 N push at 0.5 MPa, whereas stepping up to the 63 mm bore provides 1558.6 N. Choose this 40 mm model when your setup requires 628.3 N of push force alongside variable extend positioning within a 0-25 mm window. If your application only needs a fixed 25 mm end stop, a standard ACQ cylinder will suffice. To order, confirm the 40 mm bore, 25 mm full stroke, 30 mm adjustable window, -S magnet, and -B male 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 ACQJ40X25-30SB FAQ
It provides 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The full stroke is 25 mm with a 30 mm adjustable window, giving a usable extend range of 0-25 mm.
No, the external M12x1.25 threaded stop only changes the extend stroke length, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for end-of-stroke deceleration, and because it lacks an air brake, the rod will drift on air loss unless you add an external rod lock.
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 ACQJ40X25-30SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.