Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20SB 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 ACQJ20X80-20SB
The AirTAC ACQJ20X80-20SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend stroke anywhere from 60 mm up to the full 80 mm directly on the machine, while the retract stroke remains completely unaffected. Because the piston area is unchanged, output force is identical to a standard ACQ of this bore.
This 20 mm bore unit pushes 157.1 N and pulls 117.8 N at 0.5 MPa, operating at speeds from 30 to 500 mm/s. It incorporates a fixed elastomer bumper at each end for end-of-stroke deceleration and includes a built-in piston magnet. The male M8x1.25 rod-end thread couples directly to your load, and the external adjuster uses an M8x1.25 thread.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20SB |
|---|---|
| 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 ACQJ20X80-20SB
| 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 ACQJ20X80-20SB Is Used
Machining Fixture Stops
Dial in the extend position from 60 to 80 mm on a CNC machining fixture to accommodate raw part tolerances without machining new spacers.
Packaging Changeover
Rapidly adjust the end stop during packaging line format changes to push varying carton sizes accurately.
Assembly Press Trials
Set trial end positions on an electronic assembly press, tweaking the stroke by up to 20 mm to find the optimal pressing depth.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20SB the Right Cylinder?
Selecting this 20 mm bore provides 157.1 N of push force at 0.5 MPa; dropping to a 16 mm bore reduces push to 100.5 N, whereas stepping up to 25 mm yields 245.4 N. A fixed-stroke ACQ is sufficient if your extend position never requires tweaking, but this adjustable model saves time during product changeovers. Confirm your ordering essentials: 20 mm bore, 80 mm full stroke, 20 mm adjustment window, -S magnet, and -B male 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 ACQJ20X80-20SB FAQ
At 0.5 MPa it provides 157.1 N push and 117.8 N pull force, and 219.9 N push at 0.7 MPa, with a maximum push of 32 kgf at 1.0 MPa. The full stroke is 80 mm, and the external stop allows the usable extend range to be adjusted from 60 to 80 mm.
No, the external M8x1.25 threaded stop changes only the extend stroke length, leaving the force identical to a standard ACQ. The cylinder relies on fixed elastomer bumpers for deceleration, and the -S magnet works with both reed and solid-state switches.
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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