
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-50 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 ACQJ80X75-50 is a double-acting JIS compact cylinder featuring an external M20x1.5 threaded stop with a lock nut. This mechanism lets you fine-tune the extend end position directly on the machine, providing a usable extend range of 25 to 75 mm from the 75 mm full stroke. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays the same, output force is identical to a standard ACQ of this bore. At 0.5 MPa it delivers 2513.2 N of push force and 2267.8 N of pull force. The body includes magnetic-switch grooves for adding sensors, though this specific configuration ships without a magnet. Deceleration relies on a fixed NBR elastomer bumper at each end rather than an adjustable air cushion.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-50 |
|---|---|
| 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 extend position of a 25 to 75 mm clamping stroke on a CNC lathe to accommodate raw casting variations without machining new spacer blocks.
Quickly reposition a 513 kgf maximum push diverter arm on a packaging line during format changes, using the external M20x1.5 adjuster to hit the new end stop.
Adjust the downward extend travel on the fly for varying box heights, relying on the fixed elastomer bumper to absorb the 30-500 mm/s operational speed impacts.
When sizing this 80 mm bore actuator, note that a 63 mm unit provides 1558.6 N push at 0.5 MPa, while stepping up to a 100 mm bore yields 3927.0 N. Choose this adjustable model if your fixture setup requires varying the extend stop by up to 50 mm without swapping parts; otherwise, a fixed-stroke ACQ is simpler. To order, confirm the 80 mm bore, 75 mm full stroke, 50 mm window, female M16x2.0 rod thread, and PT3/8 porting.
Quick checklist
This 80 mm bore cylinder 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 75 mm full stroke features a 50 mm adjustable window, allowing the usable extend range to be set anywhere from 25 mm up to 75 mm.
The external M20x1.5 threaded stop with lock nut limits only the extend stroke length; it does not alter piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for end deceleration. It will not hold a load on air loss, so an external rod lock or pilot-operated check valve is required for fail-safe holding.
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