
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-75SB 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 ACQJ80X75-75SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the extend stroke on the machine across a usable range of 0 to 75 mm, while the retract stroke remains unaffected. Because the piston area is unchanged, the force output is identical to a standard ACQ of the same bore.
This model delivers 2513.2 N push force at 0.5 MPa and includes a male M22x1.5 rod end for direct load coupling. It features a 25 mm piston rod, a PT3/8 port, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. The built-in magnet works with reed or solid-state switches, and the external adjuster uses an M20x1.5 thread.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-75SB |
|---|---|
| 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 stop during product changeover on a stamping press without machining new spacers.
Adjust the extend endpoint on the fly to accommodate varying package dimensions on a packaging line.
Establish trial end positions for clamping fixtures on an assembly machine before finalizing the layout.
Selecting this 80 mm bore provides a 2513.2 N push force at 0.5 MPa. Stepping down to a 63 mm bore drops the push force to 1558.6 N, while stepping up to a 100 mm bore increases it to 3927.0 N. A fixed-stroke ACQ cylinder suffices if your end position never varies, but choose this ACQJ variant when setups require variable extend stops. Confirm the 75 mm full stroke, 75 mm adjustment window, S magnet, and B male rod thread when ordering.
Quick checklist
The usable extend range is 0 to 75 mm. It provides 2513.2 N push and 2267.8 N pull force at 0.5 MPa, 3518.5 N push at 0.7 MPa, and a maximum push force of 513 kgf at 1.0 MPa. The 75 mm window only shortens the extend stroke; it does not alter these force values.
An external M20x1.5 threaded stop with a lock nut limits the extend stroke, while fixed elastomer bumpers decelerate the rod near stroke ends. A plain ACQ-type cylinder does not hold its load on air loss; the rod drifts, so use an external rod lock or pilot-operated check valve for fail-safe holding.
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