
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-30 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X75-30 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You get a usable extend range of 45-75 mm (the 75 mm full stroke minus the 30 mm window), while the retract stroke remains completely unaffected. Because the piston area is unchanged, the force output is identical to a standard ACQ of this bore.
This 80 mm bore unit delivers 2513.2 N of push force and 2267.8 N of pull force at 0.5 MPa, peaking at a 513 kgf maximum push at 1.0 MPa. It incorporates a fixed NBR elastomer bumper at each end for end-of-stroke deceleration and includes sensor grooves, though this specific configuration ships without a magnet. The PT3/8 port and 25 mm rod ensure robust pneumatic performance.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-30 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 75 mm |
| Adjuster thread | M20×1.5 |
| Port size | PT3/8 |
| 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 | M16×2.0 (F) / M22×1.5 (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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 family changeovers without machining new stop collars.
Set the perfect extend distance for a conveyor sorting arm to accommodate varying package widths on the fly.
Establish trial end positions on a light assembly press, tweaking the 45-75 mm range to prevent overtravel and material damage.
For lower force requirements, the 63 mm bore provides 1558.6 N of push at 0.5 MPa, while stepping up to the 100 mm bore yields 3927.0 N. If your machine design has a fixed, unchanging extend position and never requires on-the-fly adjustments, a standard ACQ80 cylinder will suffice. When ordering, verify the 80 mm bore, 75 mm full stroke, 30 mm adjustable window, female M16x2.0 rod thread, and whether you need the -S magnet option for reed or solid-state switches.
Quick checklist
The usable extend range is 45-75 mm (75 mm full stroke minus the 30 mm window). Force is identical to a standard ACQ80: 2513.2 N push and 2267.8 N pull at 0.5 MPa, 3518.5 N push at 0.7 MPa, and a maximum push of 513 kgf at 1.0 MPa.
An M20x1.5 threaded adjuster with a lock nut mechanically limits the extend stroke, meaning the rod drifts and will not hold the load on air loss. The cylinder relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion, so external shock absorbers are recommended for high-energy loads.
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