
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-30B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X70-30B is a double-acting JIS compact cylinder with a 70mm full stroke and a 30mm extend adjustment window, allowing a usable forward range of 40 to 70mm. An external M20x1.5 threaded stop and lock nut lets you fine-tune the forward end position directly on your machinery without swapping parts. The return stroke remains fixed at the full 70mm.
Because the piston area is unchanged, output force equals a standard ACQ, delivering 2513.2N push and 2267.8N pull at 0.5MPa. This variant features a male M22x1.5 rod end for direct load coupling, a PT3/8 port, and fixed NBR elastomer bumpers. Note that this specific unit ships without a sensor magnet, though the body retains magnetic switch grooves for future upgrades.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-30B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 70 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. |
| ×70 | 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 CNC machining fixtures during product changeovers, utilizing the 40-70mm forward range to accommodate varying raw material widths.
Adjust the tucking depth on carton sealing machinery without changing hardware, ensuring precise flap folding for different box profiles.
Set trial end positions on light assembly presses, tweaking the 30mm window to find the optimal contact point before finalizing the mechanical setup.
Choose this 80mm bore if your application requires 2513.2N push at 0.5MPa with on-the-fly forward stroke tuning. If you need less force, stepping down to a 63mm bore yields 1558.6N push, while moving up to a 100mm bore provides 3927.0N. A fixed-stroke ACQ is sufficient if your end position never varies. When ordering, confirm the 70mm full stroke, 30mm window, male M22x1.5 rod (-B), and the absence of the magnet option.
Quick checklist
This cylinder provides 2513.2N push and 2267.8N pull at 0.5MPa, 3518.5N push at 0.7MPa, and a maximum push of 513kgf at 1.0MPa. The full stroke is 70mm with a 30mm adjustment window, giving a usable extend range of 40-70mm. The retract stroke remains unaffected at 70mm.
The external M20x1.5 threaded stop limits only the forward stroke length, meaning output force stays identical to a standard ACQ. It relies on fixed elastomer bumpers for end-of-stroke deceleration, not an adjustable air cushion. A plain cylinder does not hold its load on air loss, so use an external rod lock for fail-safe holding.
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