
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ40X100-10SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend stroke. You can fine-tune the extend end position directly on the machine without swapping parts, yielding a usable extend range of 90-100mm. The retract stroke remains completely unaffected by this adjustment. An M12x1.25 adjuster thread manages the stroke length, while the fixed elastomer bumper decelerates the piston at both ends.
Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore, delivering 628.3N push and 527.8N pull at 0.5MPa. This specific configuration includes a built-in piston magnet (-S) for position sensing alongside a male M14x1.5 rod-end thread (-B) for direct load coupling. Operating pressure spans 0.15-1.0MPa, and the PT1/8 port ensures reliable pneumatic supply.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 100 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.
| 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.
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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).
Dial in the exact clamping reach on a CNC machining fixture during part changeovers, using the external stop to accommodate varying raw material lengths without fabricating custom spacers.
Adjust the pressing depth on automated packaging lines to handle different box heights, ensuring consistent sealing pressure without reprogramming the machine's pneumatic logic.
Set precise trial end positions on a small metal bending press, allowing operators to tweak the 90-100mm extend range on the fly to dial in the perfect bend angle.
If your application requires less push force at 0.5MPa, the adjacent ACQJ32 bore provides 402.1N push and 301.6N pull. For heavier demands, the ACQJ50 bore yields 981.8N push and 824.6N pull. A standard fixed-stroke ACQ cylinder is sufficient if your end position never varies. When ordering, confirm the 40mm bore, 100mm full stroke, 10mm window, -S magnet, and -B male rod thread.
Quick checklist
The usable extend range is 90-100mm (a 100mm full stroke minus up to 10mm). Force is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128 kgf at 1.0MPa.
The M12x1.25 external threaded stop with lock nut limits only the extend length, leaving the retract stroke unaffected. It does not change the piston area, so force remains unchanged. The cylinder uses a fixed elastomer bumper, not an adjustable air cushion. Note that this cylinder will not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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