Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke50 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50
The AirTAC ACQJ40X50-50 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut on the extend side. This adjuster allows you to fine-tune the extend end position directly on your machinery without swapping components. With a full stroke of 50 mm and a 50 mm adjustment window, the usable extend range runs from 0 mm up to 50 mm. The retract stroke remains completely unaffected by this mechanism.
Because the piston area stays the same, the output force is identical to a standard ACQ of this bore, delivering a push force of 628.3 N at 0.5 MPa. The cylinder body incorporates fixed elastomer NBR bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. It features a 16 mm piston rod, a PT1/8 port, and a female M8x1.25 rod-end thread. While this specific unit ships without a magnet, the body retains magnetic-switch grooves for adding sensing capabilities if needed later.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 50 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 ACQJ40X50-50
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 ACQJ40X50-50 Is Used
Machining Fixture Stops
Dial in the exact clamping extend position on a CNC machining fixture during setup, allowing rapid adaptation for different part heights without manufacturing new stop collars.
Product Changeover Guides
Reconfigure conveyor routing stops quickly during packaging line product changeovers by turning the external M12x1.25 adjuster thread to meet new carton dimensions.
Assembly Press Testing
Establish trial end positions on an electronic assembly press, safely testing insertion depths from 0 to 50 mm before finalizing the mechanical hard stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50 the Right Cylinder?
When sizing this actuator, consider the neighboring bores: stepping down to a 32 mm bore yields 402.1 N push at 0.5 MPa, while stepping up to a 50 mm bore provides 981.8 N. If your application requires a fixed 50 mm extend stroke without on-machine end-position tuning, a standard ACQ40X50 cylinder will suffice. To order this adjustable version correctly, confirm the 40 mm bore, 50 mm full stroke, 50 mm adjustment window, standard female rod thread, and whether you require the -S magnet option for reed or solid-state switches.
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 ACQJ40X50-50 FAQ
The usable extend range is 0-50 mm (the 50 mm full stroke minus the 50 mm window). The force is identical to a standard ACQ40: push is 628.3 N and pull is 527.8 N at 0.5 MPa, push is 879.6 N at 0.7 MPa, and maximum push is 128 kgf at 1.0 MPa.
The external threaded stop with a lock nut limits only the extend stroke length, meaning the retract stroke remains unaffected. The adjuster changes stroke length only, so piston area and force stay the same. The cylinder uses fixed elastomer NBR bumpers at both ends for deceleration, not adjustable air cushions.
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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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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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