
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-30S 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 ACQJ80X70-30S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You get an on-machine usable extend range of 40-70 mm from the 70 mm full stroke, shortening travel by up to 30 mm without changing parts. The retract stroke remains completely unaffected.
Because the piston area stays the same, force is identical to a standard ACQ of this bore: 2513.2 N push and 2267.8 N pull at 0.5 MPa. The bore 80 body uses a PT3/8 port, a 25 mm rod with an M16x2.0 female thread end, and an M20x1.5 adjuster thread. Fixed NBR elastomer bumpers absorb impact at both ends, and the -S magnet enables detection with reed or solid-state switches.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X70-30S |
|---|---|
| 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 extend position of a clamping fixture on a CNC mill during a new product changeover without machining custom spacers.
Adjust the pusher extend distance on a packaging conveyor to handle varying carton widths on the fly.
Set precise lower end positions for light pressing operations on an assembly line, testing different depths before locking the nut.
If you need less push force at 0.5 MPa, the 63 mm bore yields 1558.6 N; stepping up to the 100 mm bore provides 3927.0 N. Choose this 80 mm bore when your application requires roughly 2.5 kN of extend force but the exact end position varies between setups. A fixed-stroke ACQ suffices if your extend position never changes. Confirm your ordering essentials: 80 mm bore, 70 mm full stroke, 30 mm window, the -S magnet, and the female rod thread.
Quick checklist
It delivers 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. The 70 mm full stroke can be shortened by up to 30 mm via the external stop, giving a usable extend range of 40-70 mm.
The external M20x1.5 threaded stop with lock nut mechanically limits how far the rod extends, shortening the stroke length only. The piston area is unchanged, so force remains identical to a standard ACQ. Fixed elastomer bumpers decelerate the load at both ends, and the -S magnet works with reed or solid-state switches.
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