Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30 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 ACQJ40X50-30
The AirTAC ACQJ40X50-30 is a double-acting JIS compact cylinder featuring an external extend-stop mechanism. A threaded adjuster with a lock nut lets you set the forward stroke anywhere from 20 to 50 mm, while the return stroke remains fixed at the full 50 mm. This allows rapid on-site end-position tuning without swapping parts.
Because the piston area is unchanged, output force matches a standard ACQ exactly, yielding 628.3 N push and 527.8 N pull at 0.5 MPa. The unit relies on a fixed NBR elastomer bumper for end-of-travel deceleration rather than an adjustable air cushion. It includes sensor grooves for track mounting, though this specific configuration ships without a piston magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30 |
|---|---|
| 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 ACQJ40X50-30
| 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 ACQJ40X50-30 Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC milling fixture to accommodate raw material thickness variations without re-engineering the tooling plate.
Carton Changeover Flaps
Quickly alter the folding stroke on a packaging line to process different box heights, using the external stop to prevent over-travel.
Assembly Press Trials
Safely test and set the precise insertion depth of bearings on an automated press, moving the end position in small increments during first-article runs.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30 the Right Cylinder?
For lighter duty, 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. If you do not require on-the-fly extend-length adjustments, a fixed-stroke ACQ40X50 will achieve the same clamping power. When ordering this adjustable variant, confirm the 40 mm bore, 50 mm base stroke, 30 mm window, female M8x1.25 rod-end, and PT1/8 porting. Remember that a standard compact cylinder will drift if air pressure is lost, so add an external rod lock if fail-safe load holding is required.
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 ACQJ40X50-30 FAQ
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. The usable extend range is 20-50 mm (a 50 mm full stroke minus up to a 30 mm window).
An external M12x1.25 threaded stop with a lock nut limits the forward extension distance, leaving the retract stroke unaffected. The force remains identical to a standard ACQ because the piston area is unchanged, and end-of-travel deceleration is handled by a fixed elastomer bumper rather than an adjustable air cushion.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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