
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X80-75 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 80mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ32X80-75 is a double-acting JIS compact cylinder featuring an external M12x1.25 threaded stop with a lock nut. This mechanism limits the extend end position, providing a usable forward range of 5 to 80 mm by subtracting up to 75 mm from the 80 mm full stroke. The retract stroke remains completely unaffected.
Because the 32 mm piston area stays constant, output force is identical to a standard ACQ, yielding 402.1 N push and 301.6 N pull at 0.5 MPa. The body incorporates sensor grooves for reed or solid-state switches, though this specific unit ships without a magnet. Deceleration relies on a fixed NBR elastomer bumper rather than an adjustable air cushion.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X80-75 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 80 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. |
| ×80 | 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 lathe during raw material changes without machining new spacer blocks.
Fine-tune the folding arm extension on a packaging line to accommodate varying corrugated box heights rapidly.
Establish trial end positions for pressing bearings on an automated assembly line to prevent over-travel damage.
When sizing this unit, consider the 32 mm bore delivering 402.1 N push at 0.5 MPa. Stepping down to a 25 mm bore provides 245.4 N, while moving up to a 40 mm bore offers 628.3 N. If your application never requires end-position tuning, a fixed-stroke ACQ cylinder suffices. To order, confirm the 32 mm bore, 80 mm full stroke, 75 mm adjuster window, female M8x1.25 rod thread, and PT1/8 porting. Add the -S suffix if a magnet is required for position sensing.
Quick checklist
This 32 mm bore cylinder delivers 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa. The usable extend range is 5 to 80 mm, created by the 75 mm adjustment window subtracted from the 80 mm full stroke.
The external M12x1.25 threaded stop mechanically blocks the rod from extending further, shortening the forward stroke without altering piston area, so force remains identical to a standard ACQ. The fixed NBR bumper decelerates the load near stroke end, but a plain cylinder does not hold position on air loss; use an external rod lock or pilot-operated check valve for fail-safe load holding.
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