Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20S 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 ACQJ20X15-20S
The AirTAC ACQJ20X15-20S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. The full stroke is 15 mm with a 20 mm adjustment window, yielding a usable extend range of 0-15 mm. The retract stroke remains completely unaffected by this mechanism.
Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore, delivering 157.1 N push and 117.8 N pull at 0.5 MPa. It features a 10 mm rod diameter, an M5x0.8 port, fixed elastomer bumpers at both ends, and a built-in magnet for position sensing.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20S |
|---|---|
| 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 ACQJ20X15-20S
| 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 ACQJ20X15-20S Is Used
Fixture Position Tuning
Dial in the exact clamping reach on a CNC machining fixture during setup, allowing quick adaptation for different part heights without swapping cylinders.
Product Changeover Stops
Adjust the extend stopper block on a packaging conveyor to accommodate varying carton lengths on the fly, ensuring precise product spacing.
Trial End Positions
Test various pin insertion depths on an electronics assembly machine by turning the external adjuster, finding the optimal end position before finalizing the cycle.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20S the Right Cylinder?
For lighter duties, the 16 mm bore provides 100.5 N push at 0.5 MPa, while the 25 mm bore offers 245.4 N if your application requires more power. If the exact 15 mm end position is fixed and never varies, a standard ACQ20X15 cylinder without the external adjuster is sufficient. When ordering this adjustable version, confirm the 20 mm bore, 15 mm full stroke, 20 mm window, the -S magnet option, and the default female M5x0.8 rod-end 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 ACQJ20X15-20S FAQ
The usable extend range is 0-15 mm (15 mm full stroke minus the 20 mm window), and the retract stroke is unaffected. The force is identical to a standard ACQ20: it provides 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.
An external M8x1.25 threaded stop with a lock nut limits the extend distance, changing only the stroke length, not the force. The cylinder uses fixed elastomer bumpers at both ends for deceleration rather than adjustable air cushions. The built-in -S magnet is compatible with reed or electronic solid-state switches for position feedback.
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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