Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 25mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke25 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10S
The AirTAC ACQJ40X25-10S is a double-acting JIS compact cylinder with a 25mm base stroke and an external rod-end stop that allows you to trim the forward extension by up to 10mm. This yields a usable extend span of 15-25mm, tunable directly on your equipment without swapping parts. The retract distance remains completely unaffected by this mechanism. A 16mm piston rod and PT1/8 porting handle the air supply.
Output force mirrors a standard ACQ of the same bore because the piston area is unaltered. You get 628.3N push and 527.8N pull at 0.5MPa, or 879.6N push at 0.7MPa. The unit relies on a fixed NBR elastomer bumper at each end for end-of-travel deceleration rather than an adjustable air cushion. Because this variant includes the -S magnet, it supports both reed and solid-state electronic sensors via its integrated mounting grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 25 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 ACQJ40X25-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 ACQJ40X25-10S Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC lathe fixture, adjusting the 15-25mm forward position to accommodate raw blanks of slightly varying lengths without retooling.
Carton Forming Arms
Tune the tucking arm extension on a packaging line to handle different box depths, using the external stop to prevent over-travel on smaller cartons.
Assembly Press Positioning
Set precise trial end positions for pressing bearings on an assembly line, allowing operators to tweak the 10mm window to find the optimal seating depth.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X25-10S the Right Cylinder?
If your setup only requires a fixed 25mm forward movement, a standard ACQ40X25-S will suffice and costs less. Choose this adjustable model when you need to fine-tune the endpoint within a 15-25mm window during product changeovers. For higher force demands, stepping up to a 50mm bore yields 981.8N push at 0.5MPa; dropping to a 32mm bore reduces the push to 402.1N. When ordering, verify the 40mm bore, 25mm full stroke, 10mm adjuster window, the -S magnet option, and the default M8x1.25 female rod-end thread. The external adjuster uses an M12x1.25 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 ACQJ40X25-10S FAQ
The usable extend range is 15-25mm (a 25mm full stroke shortened by up to 10mm). It delivers 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa.
No, the force remains identical to a standard ACQ40 because the piston area is unchanged. The external M12x1.25 threaded stop only limits the forward length. End-of-travel deceleration is handled by a fixed elastomer bumper, not an adjustable air cushion.
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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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