Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke75 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75B
The AirTAC ACQJ40X75-75B is a double-acting JIS compact cylinder featuring a 75mm full stroke and a male-thread rod end (M14x1.5) that couples directly to your load. An external adjuster screw with an M12x1.25 thread and lock nut limits the extend end position. You can fine-tune the usable extend range from 0mm up to 75mm directly on the machine without swapping parts. The retract stroke remains completely unaffected.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore. At 0.5 MPa it delivers 628.3N of push force and 527.8N of pull force. The body incorporates sensor grooves for reed or solid-state switches, though this specific SKU ships without a magnet. Deceleration is handled by fixed NBR elastomer bumpers at both ends rather than adjustable air cushions.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 75 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 ACQJ40X75-75B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 ACQJ40X75-75B Is Used
Machining Fixture Stops
Dial in the exact extend position for varying raw material blanks on a CNC machining fixture without machining new stop collars.
Product Changeover Guides
Rapidly reposition the extend end stop on a packaging line when switching between different carton sizes or product heights.
Prototype End Positions
Safely test and iterate trial extend end points during new machine commissioning to find the optimal mechanical motion profile.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-75B the Right Cylinder?
Selecting this 40mm bore cylinder involves sizing against its neighbours: a 32mm bore provides 402.1N push at 0.5 MPa, while a 50mm bore yields 981.8N. If your extend end position never varies, a fixed-stroke ACQ cylinder is sufficient and simpler. When ordering the ACQJ variant, confirm the 75mm full stroke, the 75mm adjustment window, the male M14x1.5 rod thread, and whether you need the -S magnet option for position sensing. Note that a plain compact cylinder does not hold its load on air loss; for fail-safe holding, integrate an external rod lock or pilot-operated check valve.
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 ACQJ40X75-75B FAQ
It provides 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The full stroke is 75mm with a 75mm adjustment window, yielding a usable extend range of 0-75mm.
The external M12x1.25 threaded stop with lock nut limits the extend stroke length only; it does not alter piston area, so force remains identical to a standard ACQ. Deceleration relies on fixed NBR elastomer bumpers, not adjustable air cushions, so external shock absorbers are recommended for high-energy loads.
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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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