Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke50 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40B
The AirTAC ACQJ40X50-40B is a double-acting JIS compact cylinder featuring an external adjustable extend stop. An external M12x1.25 threaded rod with a lock nut lets you fine-tune the extend end position on the machine without swapping parts. This -40 window means the usable extend range runs from 10 mm up to the full 50 mm stroke, while the retract stroke remains completely unaffected.
Because the piston area is unchanged, the force output is identical to a standard ACQ of this bore. It delivers 628.3 N push and 527.8 N pull at 0.5 MPa. This specific variant includes a male M14x1.5 piston rod end for direct load coupling, fixed elastomer bumpers at both ends for end-of-stroke deceleration, and a PT1/8 port. The body retains sensor grooves, though this unit ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 50 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 ACQJ40X50-40B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 ACQJ40X50-40B Is Used
Machining Fixture Positioning
Dial in the exact extend stop from 10 to 50 mm on a CNC machining fixture to accommodate varying part thicknesses without fabricating new spacer blocks.
Assembly Line Changeover
Speed up product changeovers on an automated assembly line by turning the external M12x1.25 adjuster to set new extend end positions for different product sizes.
Packaging Machine Setup
Establish trial end positions on a packaging machine carton sealer, testing different extend lengths to find the optimal pressing depth before locking the nut.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40B the Right Cylinder?
This 40 mm bore cylinder provides 879.6 N push force at 0.7 MPa and a maximum push of 128 kgf at 1.0 MPa. If your application requires less force, the 32 mm bore offers 402.1 N push at 0.5 MPa; for heavier loads, stepping up to the 50 mm bore yields 981.8 N push at 0.5 MPa. Choose this adjustable model when you need on-machine end-position tuning during setup or product changeovers; if the exact 50 mm end position is fixed and never varies, a standard ACQ40X50 will suffice. Confirm ordering essentials: 40 mm bore, 50 mm full stroke, 40 mm adjustment window, male rod thread (-B), and no magnet.
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 ACQJ40X50-40B FAQ
The force is identical to a standard ACQ40 cylinder because the adjuster only changes stroke length, not piston area. 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. With a full stroke of 50 mm and a 40 mm adjustment window, the usable extend range is 10-50 mm.
An external M12x1.25 threaded stop with a lock nut limits how far the rod extends, allowing you to shorten the extend stroke by up to 40 mm without changing parts; the retract stroke is unaffected. This model ships without a sensor magnet, though the body retains sensor grooves. Fixed elastomer bumpers handle end-of-stroke deceleration, and for fail-safe load holding on air loss, an external rod lock is required.
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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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