
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-40B 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 ACQJ80X75-40B is a double-acting JIS compact cylinder featuring a male-threaded piston rod (M22x1.5) and an external extend stop. A threaded screw with a lock nut restricts how far the rod travels outward, yielding a usable extend span of 35 to 75 mm. The retract distance remains fixed at the original 75 mm. Because the adjuster solely limits travel and not piston area, output matches a standard ACQ exactly.
This bore 80 unit pushes with 2513.2 N and pulls with 2267.8 N at 0.5 MPa, peaking at 513 kgf under 1.0 MPa. It uses a PT3/8 port and a 25 mm rod. Fixed NBR elastomer bumpers absorb impact at both ends, while the body retains magnetic-switch grooves—though this specific SKU ships without a magnet. Operating speed spans 30-500 mm/s within a -20 to +70 C environment.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-40B |
|---|---|
| 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 milling fixture to accommodate raw casting variations without swapping hard stops.
Adjust the tucking arm extension on a packaging line during format size changes, shifting from small to tall cartons rapidly.
Set trial engagement depths on an automated assembly press to test bearing insertion force before finalizing the mechanical stop.
Selecting this bore 80 unit makes sense when your machine requires exact outward positioning between 35 and 75 mm without machining new spacers. If your application always uses the full 75 mm extension, a fixed-stroke ACQ cylinder is simpler and more cost-effective. For higher energy impacts at rapid cycle speeds, consider adding an external shock absorber since the built-in rubber bumper is non-adjustable. When ordering, confirm the 40 mm window, the 75 mm total length, the male M22x1.5 rod end, and the absence of a sensor 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 outward travel can be fine-tuned within a 35 to 75 mm range via the 40 mm adjustment window, while the retract stroke stays fixed at 75 mm.
An M20x1.5 threaded screw with a lock nut physically limits the outward travel distance, meaning the output force remains identical to a standard ACQ because the piston area is unchanged. Deceleration relies on fixed NBR elastomer bumpers at both ends, not an adjustable air cushion. Note that this model lacks a sensor magnet and will not hold its load if air pressure is lost.
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