Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 80mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke80 mm
- Port sizeM5×0.8
- Adjuster threadM8×1.25
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S
The AirTAC ACQJ20X80-100S is a double-acting JIS compact cylinder with an external M8x1.25 threaded stop and lock nut that limits the extend stroke. You can fine-tune the usable extend range from 0 up to 80mm directly on your machinery without swapping parts, while the retract stroke remains completely unaffected.
Because the piston area stays the same, output force is identical to a standard ACQ bore 20 unit, delivering 157.1N push at 0.5MPa. This 20mm bore variant includes a 10mm piston rod, an M5x0.8 port, and a built-in magnet for reed or solid-state switches. It relies on fixed TPU elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 80 mm |
| Adjuster thread | M8×1.25 |
| Port size | M5×0.8 |
| 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 | M5×0.8 (F) / M8×1.25 (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.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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.
Model Code: Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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).
Where the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S Is Used
CNC Fixture Tuning
Dial in the exact extend position for varying raw material sizes on a CNC machining fixture without machining new spacers.
Carton Changeover
Adjust the extend stroke on the fly during packaging line format changeovers to accommodate different package dimensions.
Prototype Testing
Sweep through multiple extend end positions during laboratory prototype testing to find the optimal mechanical contact point.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S the Right Cylinder?
If your setup requires less push power, the 16mm bore provides 100.5N at 0.5MPa, whereas stepping up to the 25mm bore yields 245.4N for heavier loads. A fixed-stroke ACQ20 cylinder is adequate if your extend endpoint never needs alteration. When ordering this adjustable model, verify the 80mm full stroke, the 100mm adjuster window, the -S magnet option, and the default female M5x0.8 rod-end thread.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-100S FAQ
It delivers 157.1N push and 117.8N pull at 0.5MPa, 219.9N push at 0.7MPa, and a maximum push of 32kgf at 1.0MPa. The full stroke is 80mm with a 100mm window, allowing a usable extend range of 0-80mm.
No, the adjuster only changes the extend stroke length, not the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected, and fixed elastomer bumpers decelerate the load at both ends.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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