
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X5-10S 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 ACQJ40X5-10S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. With a 5mm full stroke and a 10mm adjustment window, the usable extend range is 0-5mm. The retract stroke remains unaffected by this mechanism. Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore.
This bore 40mm unit delivers 628.3N push and 527.8N pull at 0.5MPa. It features a fixed elastomer bumper at each end for end-of-stroke deceleration, and the included -S piston magnet works with reed or electronic solid-state switches. The piston rod measures 16mm with a female M8x1.25 rod-end thread, and the external adjuster utilizes an M12x1.25 thread.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X5-10S |
|---|---|
| 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 precise 0-5mm clamping contact on machined parts without swapping physical spacers on the fixture plate.
Adapt end positions rapidly on a packaging line when shifting between slightly different carton depths or product heights.
Establish optimal trial end stops on new assembly machinery during R&D runs before finalizing hard mechanical stops.
When sizing this actuator, consider the neighbouring bores: a 32mm bore provides 402.1N push at 0.5MPa, while a 50mm bore yields 981.8N. This 40mm option provides 628.3N push, striking a balance for medium-duty tasks. If your application never requires altering the extend position, a fixed-stroke ACQ cylinder will suffice. To order this adjustable version, confirm the 40mm bore, 5mm full stroke, 10mm window, the -S magnet, and the female rod thread.
Quick checklist
This cylinder provides 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 5mm full stroke has a 10mm window, allowing a usable extend range of 0-5mm. The retract stroke is unaffected.
The external M12x1.25 threaded stop with a lock nut mechanically limits the extend length, meaning the output force remains identical to a standard ACQ because the piston area is unchanged. The unit relies on a fixed elastomer bumper at each end for deceleration rather than an adjustable air cushion.
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