Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20 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 ACQJ20X80-20
The AirTAC ACQJ20X80-20 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 range from 60 mm up to the full 80 mm directly on your machinery, while the retract stroke remains completely unaffected. Because the piston area stays the same, output force equals a standard ACQ of this bore.
This 20 mm bore unit delivers 157.1 N push and 117.8 N pull at 0.5 MPa. It uses a 10 mm rod with a female M5x0.8 end thread, an M8x1.25 male adjuster, and an M5x0.8 port. The body includes fixed elastomer TPU bumpers at each end for end-of-stroke deceleration, plus magnetic-switch grooves for adding sensors later, though this specific configuration ships without a magnet.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20 |
|---|---|
| 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 ACQJ20X80-20
| 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 ACQJ20X80-20 Is Used
Machining Fixture Setup
Dial in the exact clamping reach on a CNC fixture during initial setup, shortening the extend stroke from 80 mm down to 60 mm to accommodate varying raw material lengths without swapping cylinders.
Assembly Line Changeover
Adapt a robotic assembly station for a new product variant by rotating the external stopper nut, quickly resetting the end position for different component heights.
Packaging Machine Trial
Establish the precise push-off distance for a carton erector by testing intermediate extend positions on the fly, preventing overtravel before finalizing the mechanical stops.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-20 the Right Cylinder?
Selecting this 20 mm bore provides 157.1 N push at 0.5 MPa; if you need less force, stepping down to a 16 mm bore yields 100.5 N, while moving up to a 25 mm bore provides 245.4 N. If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder will achieve the same output. When ordering this adjustable model, confirm the 80 mm full stroke, the 20 mm adjustment window, the female rod thread, and whether you need the S magnet option for reed or solid-state switches.
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 ACQJ20X80-20 FAQ
This 20 mm bore cylinder provides a push force of 157.1 N and a pull force of 117.8 N at 0.5 MPa, 219.9 N push at 0.7 MPa, and a maximum push of 32 kgf at 1.0 MPa. The usable extend range is 60-80 mm, created by the 20 mm adjustment window on the 80 mm full stroke.
The external M8x1.25 threaded stop and lock nut mechanically block the rod from extending fully, changing only the stroke length without reducing piston area or force. The cylinder uses fixed elastomer bumpers for deceleration rather than adjustable air cushions. Note that a plain ACQ-type does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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