
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X45-40 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X45-40 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend stroke on the machine from 5 mm up to the full 45 mm, shortening the travel by up to 40 mm without swapping parts. The retract stroke remains completely unaffected.
Because the piston area is unchanged, the force is identical to a standard ACQ of this bore, delivering 2513.2 N push and 2267.8 N pull at 0.5 MPa. The cylinder body includes magnetic-switch grooves, though this specific model ships without a magnet. It uses a fixed elastomer bumper at each end rather than an adjustable air cushion, and operates at speeds of 30-500 mm/s.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X45-40 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 45 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. |
| ×45 | 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 for varying raw material thicknesses on a CNC machining fixture without manufacturing new stop collars.
Rapidly adapt the extend end-stop during product family changeovers on an automated assembly line to handle different component heights.
Adjust the tamping depth on a packaging conveyor to settle different carton sizes, preventing crushing while ensuring a secure fold.
Choosing this 80 mm bore unit provides a maximum push force of 513 kgf at 1.0 MPa. If your application needs less force, stepping down to a 63 mm bore yields 1558.6 N push at 0.5 MPa, whereas moving up to a 100 mm bore provides 3927.0 N push at 0.5 MPa. If the end position never varies, a fixed-stroke ACQ suffices. When ordering, confirm the 45 mm full stroke, the 40 mm adjuster window, the female M16x2.0 rod end, and the PT3/8 port.
Quick checklist
The usable extend range is 5-45 mm (full 45 mm stroke minus the 40 mm window). Force is identical to a standard ACQ: push is 2513.2 N and pull is 2267.8 N at 0.5 MPa, push is 3518.5 N at 0.7 MPa, and max push is 513 kgf at 1.0 MPa. The retract stroke is unaffected.
An external M20x1.5 threaded stop with a lock nut mechanically limits the extend travel, changing only the stroke length, not the force. The cylinder uses a fixed NBR elastomer bumper at each end, not an adjustable air cushion. A plain ACQ-type does not hold its load on air loss; for a fail-safe hold, use an external rod lock or pilot-operated check valve.
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