
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X45-50B 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 ACQJ80X45-50B is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. The full stroke is 45 mm and the adjustable window is 50 mm, yielding a usable extend range of 0-45 mm. The retract stroke remains unaffected by this adjustment. Because the piston area stays constant, the output force equals that of a standard ACQ equivalent.
This bore 80 unit delivers 2513.2 N push and 2267.8 N pull at 0.5 MPa. It features a 25 mm piston rod with an M22x1.5 male thread for direct load coupling, a PT3/8 port, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. The body includes sensor grooves, though this specific configuration ships without a magnet.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X45-50B |
|---|---|
| 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 endpoint on a machining fixture without swapping cylinders when raw material thickness varies.
Quickly reposition the extend stop during product changeover on an assembly line to accommodate different part heights.
Set trial end positions for a packaging clamp to test carton sealing pressure before finalizing the mechanical setup.
When sizing this bore 80 unit, note the 2513.2 N push force at 0.5 MPa. Stepping down to a bore 63 yields 1558.6 N push, while a bore 100 provides 3927.0 N. If your application never requires altering the extend endpoint, a fixed-stroke ACQ cylinder is sufficient. To order this adjustable variant correctly, confirm the 80 mm bore, 45 mm full stroke, 50 mm window, the male rod thread option B, and whether a magnet is needed for position sensing.
Quick checklist
The usable extend range is 0-45 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.
An external M20x1.5 threaded stop with a lock nut limits the extend stroke length only; the force remains identical to a standard ACQ. Fixed NBR bumpers decelerate the rod near stroke end, but for fail-safe load holding on air loss, an external rod lock is required.
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