Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 15mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke15 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 ACQJ20X15-20
The AirTAC ACQJ20X15-20 is a double-acting JIS compact cylinder with a 20 mm bore and 15 mm full stroke. An external M8x1.25 threaded stop and lock nut limits the extend end position, providing a usable extend range of 0 to 15 mm. The retract stroke remains unaffected by this adjustment. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
This model delivers 157.1 N push and 117.8 N pull at 0.5 MPa. It features a 10 mm rod diameter, an M5x0.8 port, and fixed elastomer bumpers at both ends for deceleration. The body includes sensor grooves, though this specific configuration ships without a magnet. Operating pressure spans 0.15 to 1.0 MPa, with speeds from 30 to 500 mm/s.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 15 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 ACQJ20X15-20
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 ACQJ20X15-20 Is Used
Prototype Clamp Tuning
Dial in the exact clamping depth on prototype machining fixtures without fabricating custom spacers or swapping cylinder bodies.
Carton Changeover Stops
Adjust the extend end position on packaging lines to accommodate varying carton sizes during quick product changeovers.
Lab Test End Points
Set precise trial end positions for testing probes or actuators on laboratory equipment, tweaking the stroke in fractions of a millimeter.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20 the Right Cylinder?
If your application requires less extend thrust, the adjacent 16 mm bore offers 100.5 N push at 0.5 MPa. For greater force, step up to the 25 mm bore, which provides 245.4 N push at 0.5 MPa. If your end position never changes, a fixed-stroke ACQ20 cylinder is sufficient. When ordering, confirm the 20 mm bore, 15 mm full stroke, 20 mm adjustment window, female M5x0.8 rod thread, and whether you need the magnet option for sensing.
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 ACQJ20X15-20 FAQ
The usable extend range is 0-15 mm (15 mm full stroke minus the 20 mm window). Force is identical to a standard ACQ: 157.1 N push and 117.8 N pull at 0.5 MPa, 219.9 N push at 0.7 MPa, and a maximum push of 32 kgf at 1.0 MPa. The external adjuster thread is M8x1.25.
An external threaded stop with a lock nut limits how far the rod extends, allowing on-machine stroke tuning without changing parts. It only changes stroke length, so the output force remains unchanged. The cylinder uses fixed elastomer bumpers at each end for deceleration, not adjustable air cushions.
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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