Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke40 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30B
The AirTAC ACQJ40X40-30B is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 10 mm up to the full 40 mm directly on the machine without swapping parts, while the retract stroke remains completely unaffected. It includes a male M14x1.5 rod-end thread for direct load coupling.
Because the piston area is unchanged, force is identical to a standard ACQ of this bore, delivering 628.3 N push and 527.8 N pull at 0.5 MPa. The unit features a fixed NBR elastomer bumper at each end for end-of-stroke deceleration and operates at speeds from 30 to 500 mm/s. Note that a plain cylinder does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 40 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 ACQJ40X40-30B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 ACQJ40X40-30B Is Used
Machining Fixture Stops
Dial in the exact extend position from 10 to 40 mm on a milling fixture to accommodate different part lengths without manufacturing new stop collars.
Carton Forming Adjustments
Modify the extend endpoint on the fly during carton size changeovers, ensuring precise folding pressure for various package dimensions.
Assembly Press Tuning
Set trial end positions for pressing bearings or pins, allowing operators to test stroke depth quickly before finalizing the mechanical setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30B the Right Cylinder?
If you need less push force, the adjacent 32 mm bore provides 402.1 N push at 0.5 MPa, whereas the larger 50 mm bore yields 981.8 N if your application demands more power. A fixed-stroke ACQ cylinder is sufficient if your end position never requires adjustment. For this adjustable model, confirm the 40 mm full stroke, the 30 mm window, the PT1/8 port, and the male M14x1.5 rod thread (-B) when ordering.
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 ACQJ40X40-30B FAQ
The usable extend range is 10-40 mm (40 mm full stroke minus the 30 mm window). The force is identical to a standard ACQ: 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 retract stroke is unaffected by the adjuster.
An external M12x1.25 threaded stop with a lock nut limits how far the rod extends, changing only the stroke length, not the piston area, so force remains unchanged. The cylinder uses fixed NBR elastomer bumpers at both ends for deceleration rather than an adjustable air cushion. This model ships without a sensor magnet, though the body retains sensor grooves.
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 ACQJ40X40-30B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.