
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X90-40 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ32X90-40 is a double-acting JIS compact cylinder featuring an external threaded stop that lets you fine-tune the extend end position directly on your equipment. With a 90mm full stroke and a 40mm adjustment window, the usable extend range spans 50mm to 90mm. The retract movement remains completely unaffected by this mechanism.
Because the piston area stays constant, output force matches a standard ACQ exactly, yielding 402.1N push and 301.6N pull at 0.5MPa. The unit incorporates a fixed NBR elastomer bumper for end-of-stroke deceleration and features built-in sensor grooves, though this specific configuration ships without a magnet. It operates efficiently at speeds between 30 and 500mm/s.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X90-40 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 90 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 | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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. |
|---|---|
| 32 | Bore size in mm. |
| ×90 | 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 extension on a CNC machining fixture to accommodate different part thicknesses without swapping out the entire actuator assembly.
Adjust the physical stop position on a packaging line conveyor to handle varying carton lengths during rapid product changeovers.
Test and set trial end positions on an assembly press, tweaking the 50 to 90mm extend range until the optimal pressing depth is achieved.
When sizing this 32mm bore actuator, compare your load against its 402.1N push force at 0.5MPa. If your application requires less thrust, dropping to a 25mm bore provides 245.4N, while stepping up to a 40mm bore yields 628.3N. If your extend endpoint never varies, a fixed-stroke ACQ cylinder is sufficient and more compact. For this adjustable variant, confirm your ordering code details: 32mm bore, 90mm full stroke, 40mm window, female M8x1.25 rod end, and no magnet.
Quick checklist
The usable extend range is 50mm to 90mm (90mm full stroke minus the 40mm window). Force is identical to a standard ACQ: 402.1N push and 301.6N pull at 0.5MPa, 562.9N push at 0.7MPa, and a maximum push of 82kgf at 1.0MPa. The retract stroke remains fixed at 90mm.
An external M12x1.25 threaded stop with a lock nut limits how far the rod extends, changing only the stroke length, not the piston area, so force is unchanged. The cylinder uses a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion. Note that this model lacks a magnet, though the body retains sensor grooves for adding external reed or solid-state switches.
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