Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30B 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 ACQJ40X35-30B
The AirTAC ACQJ40X35-30B is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the EXTEND end position. You can fine-tune the usable extend range from 5 mm up to the full 35 mm directly on the machine without swapping parts, while the RETRACT stroke remains completely unaffected. The adjuster features an M12x1.25 thread.
Because the piston area is unchanged, force output is identical to a standard ACQ of this bore: 628.3 N push and 527.8 N pull at 0.5 MPa. This 40 mm bore unit uses a PT1/8 port, a Ø16 mm rod, and includes a male M14x1.5 rod-end thread (-B) for direct load coupling. It relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30B |
|---|---|
| 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 ACQJ40X35-30B
| 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 ACQJ40X35-30B Is Used
Machining Fixture Tuning
Dial in the exact extend stop from 5 to 35 mm on a CNC fixture to accommodate varying part thicknesses without machining new spacers.
Assembly Line Changeover
Rapidly reposition the end-of-stroke limit during product family changeovers on an automated assembly press, saving setup minutes.
Packaging Machine Trials
Test different extend end positions for a sealing or folding head on packaging equipment to find the optimal crimp depth.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-30B the Right Cylinder?
For lower force needs, the 32 mm bore delivers 402.1 N push at 0.5 MPa; for higher demands, the 50 mm bore provides 981.8 N. If your extend position never varies, a fixed-stroke ACQ is simpler. When ordering this adjustable version, confirm the 40 mm bore, 35 mm full stroke, 30 mm window, the male M14x1.5 rod thread (-B), and note this unit ships without a magnet (-S omitted).
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 ACQJ40X35-30B FAQ
The usable extend range is 5-35 mm (full 35 mm 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 stroke only; the retract stroke is unaffected and force is unchanged. The cylinder uses a fixed NBR elastomer bumper at each end for deceleration, not an adjustable air cushion. Note that a plain ACQ-type will not hold its load on air loss; use an external rod lock for fail-safe holding.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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