
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X80-40B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 80mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X80-40B is a double-acting JIS compact cylinder featuring an external male-thread piston rod end (M22x1.5) that couples directly to your load. An external threaded stop with a lock nut limits the extend end position, providing a usable extend range of 40-80 mm from the 80 mm full stroke, while the retract stroke remains completely unaffected.
Because the adjuster changes stroke length only, the piston area stays the same, meaning the force is identical to a standard ACQ of this bore. You get 2513.2 N of push force and 2267.8 N of pull force at 0.5 MPa. The unit relies on a fixed NBR elastomer bumper at each end for deceleration and includes sensor grooves, though this specific configuration ships without a magnet.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X80-40B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 80 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. |
| ×80 | 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 part lengths on a CNC lathe without machining new stop blocks.
Quickly reposition a pneumatic diverter gate on a packaging line to handle different carton sizes on the fly.
Set trial end positions during a new fixture setup on an assembly press to find the optimal clamping depth.
If you need less push force at 0.5 MPa, stepping down to a 63 mm bore yields 1558.6 N, whereas stepping up to a 100 mm bore provides 3927.0 N. A fixed-stroke ACQ is sufficient if your end position never requires tweaking. When ordering, verify the 80 mm bore, 80 mm full stroke, 40 mm adjustable window, the male rod thread, and confirm whether a magnet is needed for your sensors.
Quick checklist
The usable extend range is 40-80 mm. 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 external M20x1.5 threaded stop with lock nut limits the extend stroke without altering the piston area, so force remains identical to a standard ACQ. The unit uses fixed NBR bumpers for deceleration and lacks a magnet, though the body retains sensor grooves.
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