
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-75SB 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.
The AirTAC ACQJ80X90-75SB is a double-acting JIS compact cylinder with an 80 mm bore and a 90 mm full stroke. An external threaded stop and lock nut limit the rod extension, providing a usable extend range of 15 to 90 mm. The retract stroke remains completely unaffected by this adjustment. Because the piston area stays constant, output force is identical to a standard ACQ of this size.
Equipped with a male M22x1.5 rod end, this unit couples directly to your load. It features a 25 mm piston rod, PT3/8 porting, and an M20x1.5 adjuster thread. The body includes fixed elastomer bumpers for end-of-stroke deceleration and magnetic-switch grooves. The integrated magnet (-S) supports both reed and solid-state sensors.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-75SB |
|---|---|
| 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 machining center during setup, accommodating different raw casting widths without swapping out cylinder hardware.
Adjust the extend endpoint on a carton sealing machine to handle varied box lengths on the fly, minimizing downtime between production runs.
Test multiple working depths on an assembly press to find the optimal engagement point for new components before finalizing the mechanical stops.
Selecting this 80 mm bore yields a push force of 2513.2 N at 0.5 MPa. If your application requires less force, stepping down to a 63 mm bore provides 1558.6 N, while moving up to a 100 mm bore offers 3927.0 N. If the end position never needs tuning, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 90 mm full stroke, 75 mm window, -S magnet, and -B male rod thread.
Quick checklist
The usable extend range is 15 to 90 mm. Force is identical to a standard ACQ: push is 2513.2 N and pull is 2267.8 N at 0.5 MPa, push is 3518.5 N at 0.7 MPa, and maximum push is 513 kgf at 1.0 MPa.
The M20x1.5 threaded stop limits extension length without changing piston area, so force remains unchanged. Fixed elastomer bumpers decelerate the rod near stroke ends. Note that this cylinder will drift and not hold a load on air loss; use an external rod lock for fail-safe holding.
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