
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-20SB 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 ACQJ80X90-20SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You get a usable extend range of 70-90mm, as the 20mm window allows you to shorten the full 90mm stroke directly on the machine. The retract stroke remains completely unaffected. Because the piston area stays the same, the output force is identical to a standard ACQ of this bore size.
This model includes a male-thread piston rod end (M22x1.5) for direct load coupling and a built-in piston magnet (-S) for position sensing. It uses a PT3/8 port and a 25mm rod. Fixed elastomer bumpers handle end-of-stroke deceleration, while the external adjuster utilizes an M20x1.5 thread. Operating pressure spans 0.15-1.0 MPa, and the unit runs at speeds between 30-500 mm/s across a -20 to +70 C temperature range.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-20SB |
|---|---|
| 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 machining centers when raw part thickness varies, using the external stop to prevent over-travel without reprogramming the press.
Adjust the extend stroke on packaging conveyors to meet different carton sizes, shifting the stop position by up to 20mm during rapid product family changeovers.
Set trial end positions on automated assembly presses, fine-tuning the 70-90mm extend range to test insertion depths before locking the nut for production runs.
If you need less push force, the 63mm bore yields 1558.6N push at 0.5MPa, while stepping up to the 100mm bore provides 3927.0N push at 0.5MPa. Choose this 80mm bore if your application requires exactly 2513.2N of push force at 0.5MPa. A fixed-stroke ACQ is sufficient if your end position never varies, but select this ACQJ variant for on-the-fly adjustments. Confirm your ordering essentials: 80mm bore, 90mm full stroke, 20mm window, magnet (-S), and male rod thread (-B).
Quick checklist
It delivers 2513.2N push and 2267.8N pull at 0.5MPa, 3518.5N push at 0.7MPa, and a maximum push of 513kgf at 1.0MPa. The usable extend range is 70-90mm, meaning the 90mm full stroke can be shortened by up to a 20mm window.
The adjuster only changes the extend stroke length, leaving the force identical to a standard ACQ because the piston area is unchanged. The included -S magnet works with reed or electronic solid-state switches, and fixed elastomer bumpers decelerate the rod at both ends.
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