Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20S 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 ACQJ20X80-20S
The AirTAC ACQJ20X80-20S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend travel from 60 mm up to the full 80 mm directly on the machine, while the retract stroke remains completely unaffected.
Because the adjuster only alters travel length and not piston area, the output force is identical to a standard ACQ of this bore. The 10 mm piston rod, M5x0.8 port, and fixed elastomer bumper keep the envelope compact, while the built-in magnet (-S) supports reed or solid-state sensors.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20S |
|---|---|
| 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 ACQJ20X80-20S
| 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 ACQJ20X80-20S Is Used
Machining Fixture Stops
Dial in the extend position from 60 to 80 mm on a CNC fixture to accommodate varying raw material thicknesses without machining new stop blocks.
Packaging Changeover
Adjust the extend endpoint on the fly during product format changes on a carton sealing line, saving time by avoiding mechanical teardown.
Assembly Press Setup
Test and set precise end positions for pressing operations on a factory floor, tweaking the stroke window to find the exact contact pressure.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20S the Right Cylinder?
If you need slightly less push force, the adjacent bore 16 delivers 100.5 N at 0.5 MPa, whereas stepping up to bore 25 provides 245.4 N. A fixed-stroke ACQ20 is sufficient if your end position never requires shifting. To order this adjustable unit correctly, confirm the 20 mm bore, 80 mm full stroke, 20 mm window, the -S magnet, and your required rod 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 ACQJ20X80-20S FAQ
The push force is 157.1 N and pull is 117.8 N at 0.5 MPa, with a push of 219.9 N at 0.7 MPa and a maximum push of 32 kgf at 1.0 MPa. The full stroke is 80 mm with a 20 mm adjustment window, giving a usable extend range of 60-80 mm.
An external M8x1.25 threaded stop with a lock nut limits the extend travel, allowing on-machine tuning without replacing parts. The adjuster changes stroke length only, so force remains identical to a standard ACQ, and a fixed elastomer bumper decelerates 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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