
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X5-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 5mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ40X5-10SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend stroke. With a 5mm full stroke and a 10mm adjuster window, the usable extend range is 0-5mm. The retract stroke remains completely unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore.
This model features a 40mm bore, a 16mm rod, and PT1/8 ports. It includes an M12x1.25 external adjuster thread for precise end-position tuning on the machine without changing parts. The unit relies on a fixed elastomer bumper at each end for deceleration and includes a built-in piston magnet for position sensing.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X5-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 5 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. |
| ×5 | 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 depth on machining fixtures where a 5mm movement requires micro-adjustments between material batches.
Reposition the end stop rapidly on packaging lines when switching carton sizes, using the external thread to set the new extend limit.
Test prototype end positions during machine commissioning without fabricating new spacers or ordering alternate stroke lengths.
For lower force requirements, the 32mm bore variant yields a 402.1N push at 0.5MPa, whereas stepping up to the 50mm bore provides 981.8N. If your extend position never needs tuning, a fixed-stroke ACQ cylinder suffices. When ordering this unit, verify the 40mm bore, 5mm full stroke, 10mm window, the S magnet, and the B male rod thread (M14x1.5).
Quick checklist
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. The full stroke is 5mm with a 10mm window, allowing a usable extend range of 0-5mm.
The external M12x1.25 threaded stop limits only the extend length without changing the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected, and deceleration relies on a fixed elastomer bumper. The -S magnet supports reed or solid-state switches.
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