Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 35mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke35 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30S
The AirTAC ACQJ40X35-30S 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 stroke from 5 mm up to the full 35 mm directly on the machine, while the retract stroke remains unaffected. Because the piston area stays the same, the output force is identical to a standard ACQ of this bore.
This bore 40 unit features a 16 mm piston rod, PT1/8 port, and an M12x1.25 adjuster thread. It includes a fixed elastomer bumper at each end for end-of-stroke deceleration and a built-in piston magnet (-S) for position sensing. Operating pressure ranges from 0.15 to 1.0 MPa, with a speed capability of 30-500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 35 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 ACQJ40X35-30S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 ACQJ40X35-30S Is Used
Machining Fixture Stops
Dial in the extend position from 5 to 35 mm on CNC machining fixtures to accommodate varying raw material lengths without swapping cylinder parts.
Product Changeover Guides
Adjust the extend end stop on packaging line guide rails during format changeovers to hit exact product dimensions rapidly.
Trial End Positions
Set experimental extend endpoints on testing rigs to find the optimal pressing distance before locking the external nut down.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30S the Right Cylinder?
This 40 mm bore provides 628.3 N push force at 0.5 MPa. If your application needs less force, the 32 mm bore yields 402.1 N push, or for heavier loads, the 50 mm bore provides 981.8 N. A fixed-stroke ACQ is sufficient if your end position never varies, but choose this ACQJ model if setup-varying fixtures require on-the-fly adjustments. When ordering, confirm the 35 mm full stroke, 30 mm window, S magnet option, and the default female M8x1.25 rod-end 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 ACQJ40X35-30S FAQ
The usable extend range is 5-35 mm (35 mm full stroke minus the 30 mm window). 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.
An external M12x1.25 threaded stop with a lock nut limits the extend length, changing stroke length only without reducing piston force. The cylinder uses a fixed elastomer bumper at each end for deceleration, and the -S magnet works with reed or solid-state switches for position sensing.
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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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