Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-50
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-50 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 ACQJ40X75-50
The AirTAC ACQJ40X75-50 is a double-acting JIS compact cylinder featuring a 75mm full stroke and an external M12x1.25 threaded stop with a lock nut. This mechanism lets you fine-tune the extend end position directly on your machinery, providing a usable forward range of 25 to 75mm. The return stroke remains fixed at its standard length. Because the piston area stays constant, output force equals that of a standard ACQ unit of the same bore.
Operating at 0.15 to 1.0 MPa, this 40mm bore pneumatic actuator delivers 628.3N push and 527.8N pull at 0.5MPa. It incorporates a fixed NBR elastomer bumper at each end for end-of-travel deceleration rather than an adjustable air cushion. The body includes magnetic-switch grooves, though this specific configuration ships without a magnet. The rod end features a female M8x1.25 thread, and the port size is PT1/8.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-50 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-50 |
|---|---|
| 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 ACQJ40X75-50
| 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 ACQJ40X75-50 Is Used
Machining Fixture Clamps
Dial in the exact clamping reach on a CNC machining center during part changeovers without machining new spacer blocks.
Carton Forming Stops
Adjust the folding stroke on a packaging line to accommodate varying box heights quickly and reliably.
Assembly Press Positioning
Set trial end positions for pressing bearings on an assembly line, allowing precise depth control before final lockdown.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-50 the Right Cylinder?
When sizing this actuator, compare its 628.3N push force at 0.5MPa against neighboring bores: a 32mm bore yields 402.1N, while a 50mm bore provides 981.8N. If your application never requires altering the extend length, a fixed-stroke ACQ cylinder is sufficient. For ordering, confirm the 40mm bore, 75mm full stroke, 50mm adjustment window, female rod thread, and whether you need the -S magnet option for solid-state or reed sensors.
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 ACQJ40X75-50 FAQ
This 40mm bore cylinder delivers a push force of 628.3N and a pull force of 527.8N at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The full stroke is 75mm with a 50mm adjustment window, resulting in a usable extend range of 25 to 75mm.
The external M12x1.25 threaded stop and lock nut physically limit how far the rod extends, shortening the forward stroke without changing the piston area or force. The retract stroke is unaffected. Deceleration relies on fixed elastomer bumpers, not adjustable air cushions. Because it is a standard double-acting cylinder, it will not hold a load if air pressure is lost; use an external rod lock for fail-safe holding.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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