
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-40 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 ACQJ80X75-40 is a double-acting JIS compact cylinder featuring an external M20x1.5 threaded stop with a lock nut. This mechanism limits the extend end position, providing a usable forward range of 35 to 75 mm. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force equals a standard ACQ of this bore. At 0.5 MPa you get 2513.2 N push and 2267.8 N pull. The body includes fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration and retains sensor grooves, though this specific unit ships without a magnet.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-40 |
|---|---|
| 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 lathe during part changeovers without swapping out cylinder hardware.
Modify the folding stroke depth on a packaging line to accommodate various box sizes while keeping the return stroke constant.
Test and set the precise ejection height for stamped components directly on the machine before locking the nut down.
Choosing this 80 mm bore yields 2513.2 N push at 0.5 MPa. If your application requires less thrust, stepping down to a 63 mm bore provides 1558.6 N push. If you need more power, a 100 mm bore delivers 3927.0 N. A fixed-stroke ACQ is sufficient if your end position never varies. Confirm your ordering needs: 80 mm bore, 75 mm full stroke, 40 mm adjuster window, female rod thread, and no magnet.
Quick checklist
This 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 usable extend range is 35 to 75 mm, created by a 40 mm adjustment window on a 75 mm full stroke.
The M20x1.5 threaded stop physically blocks the rod from extending further, shortening only the forward stroke without changing piston area or force. It relies on fixed elastomer bumpers for deceleration, not an air cushion. Note that a plain cylinder does not hold its load on air loss; install an external rod lock for fail-safe holding.
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