
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X45-40S 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 ACQJ80X45-40S 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 extend stroke on the machine across a 5 to 45 mm usable range, shortening the 45 mm full stroke by up to 40 mm. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays the same, the output force is identical to a standard ACQ of this bore, delivering 2513.2 N of push force at 0.5 MPa. It includes a 25 mm piston rod, a PT3/8 port, and fixed elastomer bumpers. The built-in magnet (-S) supports both reed and solid-state electronic switches for position sensing.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X45-40S |
|---|---|
| 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 on a CNC machining fixture to accommodate different raw material thicknesses without swapping cylinder bodies.
Adjust the extend stroke on packaging line diverters to handle varying carton widths on the fly, ensuring precise product routing.
Safely test and set trial end positions on an assembly press, preventing over-travel and workpiece damage during initial setup.
If you need less force, the adjacent 63 mm bore yields 1558.6 N of push at 0.5 MPa, whereas stepping up to the 100 mm bore provides 3927.0 N. If your end-position never varies, a fixed-stroke ACQ cylinder is sufficient and avoids adjuster setup. When ordering this 80 mm bore unit, confirm the 45 mm full stroke, the 40 mm adjustment window, the female M16x2.0 rod-end thread, and the -S magnet requirement.
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 usable extend range is 5-45 mm (a 45 mm full stroke minus a 40 mm window). It has an M20x1.5 adjuster thread, a 25 mm rod, and a PT3/8 port.
No, the external stop only changes the extend length, leaving the piston area and force identical to a standard ACQ. Deceleration relies on fixed elastomer bumpers at both ends, not adjustable air cushions. The -S magnet works with reed or solid-state switches, but note the cylinder will not hold a load if air pressure is lost.
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