
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-30B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
This double-acting JIS compact cylinder features an external threaded stop with a lock nut to regulate the extend end position. For the ACQJ80X90-30B, the full stroke is 90 mm and the adjustment window is 30 mm, yielding a usable extend range of 60 to 90 mm. The retract stroke remains completely unaffected by this mechanism.
Because the piston area is unchanged, output force is identical to a standard ACQ of the same bore. The 80 mm bore generates 2513.2 N push and 2267.8 N pull at 0.5 MPa, with a maximum push capacity of 513 kgf at 1.0 MPa. It includes a 25 mm male rod end (M22x1.5) for direct coupling, PT3/8 ports, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-30B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 90 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. |
| ×90 | 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 fixture during setup or tooling changes without machining new spacers.
Adjust the extend position of a diverting gate on a packaging line to handle different carton lengths rapidly.
Test varying end positions on an assembly press to find the optimal engagement depth before finalizing the mechanical stop.
When sizing this actuator, stepping down to a 63 mm bore yields 1558.6 N push at 0.5 MPa, while stepping up to a 100 mm bore provides 3927.0 N push. If your application requires a fixed extend length without on-the-fly adjustments, a standard ACQ cylinder will suffice. To order, confirm the 80 mm bore, 90 mm full stroke, 30 mm adjustment window, the male rod thread (-B), and note that this unit ships without a sensor magnet (-S omitted).
Quick checklist
The usable extend range is 60-90 mm (90 mm full stroke minus the 30 mm window). Force is identical to a standard ACQ: 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 how far the rod extends, shortening the stroke without changing the piston area, so force remains constant. Fixed elastomer bumpers handle deceleration at stroke ends. Note that a plain cylinder will drift on air loss; use an external rod lock for fail-safe holding.
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