Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50S
The AirTAC ACQJ40X45-50S is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that limits the extend end position. With a 45mm full stroke and a 50mm adjustment window, the usable extend range is 0-45mm. The retract stroke remains completely unaffected by this mechanism. A built-in piston magnet (-S) is included for position sensing.
Because the adjuster only alters stroke length and not piston area, the output force is identical to a standard ACQ bore 40. It delivers 628.3N push and 527.8N pull at 0.5MPa, rising to 879.6N push at 0.7MPa, with a maximum push of 128kgf at 1.0MPa. The cylinder uses fixed NBR elastomer bumpers at both ends and features a 16mm rod with an M8x1.25 female rod-end thread.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 45 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 ACQJ40X45-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 ACQJ40X45-50S Is Used
Machining Fixture Stops
Dial in the exact extend position on a CNC machining fixture to accommodate different raw material thicknesses without manufacturing custom spacer plates.
Assembly Line Changeover
Rapidly reconfigure end-of-stroke stops on an automated assembly press when switching between different product variants running down the same conveyor.
Packaging Machine Trials
Test and set precise tucking or folding arm end positions on packaging equipment during format changeovers to prevent product damage.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50S the Right Cylinder?
If your application requires less push force, the adjacent bore 32 model provides 402.1N push at 0.5MPa. For heavier loads, stepping up to the bore 50 version yields 981.8N push at 0.5MPa. Choose this ACQJ variant when your fixture setup demands variable extend end positions; if the extend distance is permanently fixed, a standard ACQ cylinder will suffice. Confirm your ordering essentials: 40mm bore, 45mm full stroke, 50mm window, magnet option S, and female rod thread.
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 ACQJ40X45-50S FAQ
The usable extend range is 0-45mm, derived from the 45mm full stroke minus the 50mm adjustment window. Force is identical to a standard ACQ bore 40: push is 628.3N and pull is 527.8N at 0.5MPa, push is 879.6N at 0.7MPa, and maximum push is 128kgf at 1.0MPa.
An external M12x1.25 threaded stop with a lock nut limits how far the rod extends, shortening the stroke without changing the piston area or force. The retract stroke is unaffected, and fixed elastomer bumpers decelerate the load at both ends. The built-in magnet (-S) works with reed or electronic solid-state switches fitted into the cylinder grooves.
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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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