Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40SB 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 ACQJ40X75-40SB
The AirTAC ACQJ40X75-40SB is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that restricts the extend end position. With a 75mm full stroke and a 40mm adjustment window, you can fine-tune the usable extend range from 35mm up to 75mm directly on your machinery. The retract stroke remains completely unaffected by this mechanism. A male M14x1.5 rod end (-B) couples directly to your load, while the integrated magnet (-S) enables position detection.
Because the adjuster solely limits travel without altering piston area, output force stays identical to a standard ACQ of the same bore. At 0.5 MPa it generates 628.3N of push and 527.8N of pull force. The body relies on fixed elastomer NBR bumpers at both ends for end-of-stroke deceleration rather than adjustable pneumatic cushions. Operating pressure spans 0.15 to 1.0 MPa, and the PT1/8 port ensures reliable air supply to the 16mm piston rod.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40SB |
|---|---|
| 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 ACQJ40X75-40SB
| 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 ACQJ40X75-40SB Is Used
CNC Machining Fixtures
Dial in the exact clamping reach on machining centers during raw material or part variant changeovers without swapping out cylinder hardware.
Carton Sealing Stops
Modify the extend endpoint on packaging lines to accommodate varying box dimensions on the fly, ensuring precise flap folding and tape application.
Assembly Press Triage
Test multiple insertion depths for press-fit components during new product line setup by tweaking the external stop lock nut between cycles.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-40SB the Right Cylinder?
When sizing this 40mm bore actuator, stepping down to a 32mm bore yields 402.1N push at 0.5 MPa, whereas stepping up to a 50mm bore provides 981.8N. If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder will deliver the exact same holding and driving force. To order correctly, confirm the 40mm bore, 75mm full stroke, 40mm adjuster window, the -S magnet for electronic or reed switches, and the -B male rod thread. Note that a plain compact cylinder will drift if air pressure is lost; utilize an external pilot-operated check valve for fail-safe load holding.
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 ACQJ40X75-40SB FAQ
This 40mm bore cylinder 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 40mm window, allowing an adjustable usable extend range of 35mm to 75mm.
The external M12x1.25 threaded stop with lock nut mechanically limits the extend distance, meaning force remains identical to a standard ACQ since piston area is unchanged. Deceleration is handled by fixed elastomer bumpers rather than adjustable air cushions, and the included -S magnet works with both reed and solid-state electronic switches.
Authorized Export Seller
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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