Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-10S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke40 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-10S
The AirTAC ACQJ40X40-10S is a double-acting JIS compact cylinder with an external threaded stop and lock nut on the rod-end side. This mechanism lets you fine-tune the extend end position on the machine, providing a usable extend range of 30-40 mm (full 40 mm stroke minus up to a 10 mm window). The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore, delivering 628.3 N of push at 0.5 MPa. The unit features a 16 mm piston rod, an M12x1.25 adjuster thread, and a built-in piston magnet (-S) for position sensing. It uses a fixed elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-10S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 40 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 ACQJ40X40-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 ACQJ40X40-10S Is Used
Machining Fixture Clamping
Dial in the exact clamping reach on a machining fixture without machining new spacers, accommodating different part heights on the same tombstone.
Carton Sealing Stops
Adjust the flap-folding end position on a packaging line during product size changeovers, using the external stop to set the precise 30-40 mm extend point.
Assembly Press Trial
Test multiple press-in depths for a bearing insertion on an assembly machine by tweaking the lock nut position until the optimal insertion depth is validated.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-10S the Right Cylinder?
For this 40 mm bore, the push force is 628.3 N at 0.5 MPa. If your application requires less force, the next size down is a 32 mm bore providing 402.1 N of push; if you need more power, stepping up to a 50 mm bore yields 981.8 N. If the extend position never needs tuning, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 40 mm bore, 40 mm full stroke, 10 mm adjustable window, the -S magnet option, and your required 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 ACQJ40X40-10S FAQ
The usable extend range is 30-40 mm (a 10 mm adjustable window off the 40 mm full stroke). The force is identical to a standard ACQ: 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 M12x1.25 threaded stop with a lock nut limits how far the rod extends, shortening the extend stroke only. The retract stroke is unaffected, and because the piston area remains the same, the output force does not change. The cylinder uses fixed elastomer bumpers, and the -S magnet works with both reed and electronic solid-state switches.
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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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Related AirTAC ACQJ Compact Cylinders
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