
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-20 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 ACQJ80X90-20 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that restricts the extend end position. You can fine-tune the usable extend range from 70 mm up to the full 90 mm stroke directly on your equipment, while the retract stroke remains unaffected. The adjuster features an M20x1.5 thread.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore. At 0.5 MPa, it provides 2513.2 N of push force and 2267.8 N of pull force. The unit incorporates fixed elastomer bumpers at both ends for end-of-stroke deceleration and includes magnetic-switch grooves, though this specific configuration ships without a magnet.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-20 |
|---|---|
| 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 product changeover without machining new stop spacers.
Vary the extend position on packaging lines to accommodate different box heights on the fly.
Test multiple part-insertion depths on a single unit by shifting the extend endpoint via the lock nut.
When sizing this 80 mm bore actuator, dropping down to a 63 mm bore yields 1558.6 N push at 0.5 MPa, whereas stepping up to a 100 mm bore provides 3927.0 N. If your application never requires stroke adjustments, a fixed-stroke ACQ cylinder is sufficient. To order this adjustable version correctly, confirm the 80 mm bore, 90 mm full stroke, 20 mm adjustment window, female rod-end thread (M16x2.0), and whether a magnet (-S) is needed for sensors.
Quick checklist
The usable extend range is 70 to 90 mm (90 mm full stroke minus the 20 mm window). 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 screw with a lock nut limits the extend distance, changing only the stroke length and not the piston area, so force remains identical to a standard ACQ. Deceleration is handled by fixed elastomer bumpers at both ends, not adjustable air cushions.
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