Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-50S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-50S 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 ACQJ20X80-50S
The AirTAC ACQJ20X80-50S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend stroke. You can fine-tune the extend end position on the machine, yielding a usable extend range of 30-80mm from the 80mm full stroke. The retract stroke remains completely unaffected.
Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore, delivering 157.1N push and 117.8N pull at 0.5 MPa. The 10mm rod uses an M8x1.25 male rod-end thread, and the M8x1.25 adjuster allows precise positioning. Fixed elastomer bumpers handle end-of-stroke deceleration, while the included -S magnet enables tracking with reed or solid-state switches.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-50S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-50S |
|---|---|
| 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 ACQJ20X80-50S
| 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 ACQJ20X80-50S Is Used
Multi-Product Machining Stops
Quickly dial in the extend stop from 30 to 80mm on a CNC loading station when switching between part families.
Variable Carton Sealing Jigs
Adjust the pressing end position on the fly for different box heights without swapping out the pneumatic hardware.
Assembly Press Trial
Set trial end positions for a riveting fixture safely, finding the exact contact depth before locking the nut.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-50S the Right Cylinder?
If your application only needs a fixed 80mm extend, a standard ACQ20X80 cylinder is sufficient. Choose this ACQJ20X80-50S variant when setups vary or trial end positions are required. For higher force, the 25mm bore offers 245.4N push at 0.5 MPa, whereas the 16mm bore provides 100.5N push. Confirm your ordering essentials: 20mm bore, 80mm full stroke, 50mm window, -S magnet, and female 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 ACQJ20X80-50S FAQ
It delivers 157.1N push and 117.8N pull at 0.5 MPa, 219.9N push at 0.7 MPa, and a maximum push of 32 kgf at 1.0 MPa. The full stroke is 80mm with a 50mm window, allowing an adjustable usable extend range of 30-80mm.
No, the adjuster changes stroke length only, so force remains identical to a standard ACQ. The external M8x1.25 threaded stop limits the extend stroke, while the retract stroke is unaffected. Fixed elastomer bumpers decelerate movement at both ends, and the -S magnet works with reed or electronic 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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