Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 15mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke15 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20B
The AirTAC ACQJ40X15-20B is a double-acting JIS compact cylinder featuring a 40 mm bore and a 15 mm full stroke. It uses an external M12x1.25 threaded stop with a lock nut to restrict the forward extension, yielding a usable extend range of 0-15 mm. The return stroke remains completely unaffected by this mechanism.
Because the piston area is unchanged, output force matches a standard ACQ exactly, delivering 628.3 N push and 527.8 N pull at 0.5 MPa. The body incorporates a 16 mm rod with an M14x1.5 male thread for direct load coupling, alongside fixed NBR elastomer bumpers for end-of-stroke deceleration. Sensor grooves are built into the body, though this specific SKU ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 15 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 ACQJ40X15-20B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 ACQJ40X15-20B Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC fixture without machining new spacers, accommodating varied part heights directly on the machine.
Carton Forming Tippers
Adjust the push-off distance for different box sizes on a packaging line, ensuring precise flap folding without changing out the cylinder.
Assembly Press Positions
Fine-tune the trial end position when pressing bearings, allowing operators to set the exact 0-15 mm insertion depth safely and quickly.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20B the Right Cylinder?
If your setup requires less thrust, the 32 mm bore yields 402.1 N push at 0.5 MPa, whereas stepping up to the 50 mm bore provides 981.8 N. Choose this 40 mm unit when you need 628.3 N of push force alongside precise on-machine end-position tuning. A fixed-stroke ACQ suffices if your extend position never requires adjustment. When ordering, verify the 15 mm base stroke, the 20 mm adjuster window, the male M14x1.5 rod end, and PT1/8 porting.
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 ACQJ40X15-20B FAQ
This cylinder has a 40 mm bore, a 15 mm full stroke, and a 20 mm adjustment window, giving a usable extend range of 0-15 mm. It delivers 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.
An external M12x1.25 threaded screw with a lock nut mechanically limits the extension length, meaning force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for deceleration. Note that it will not hold a load on air loss; install an external rod lock or pilot-operated check valve for fail-safe positioning.
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 ACQJ40X15-20B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.