Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X25-10SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X25-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 25mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke25 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 ACQJ20X25-10SB
The AirTAC ACQJ20X25-10SB 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 usable extend range from 15 mm up to the full 25 mm on the machine, while the retract stroke remains unaffected. Because the piston area is unchanged, the force is identical to a standard ACQ of this bore.
This 20 mm bore unit delivers 157.1 N push force at 0.5 MPa and uses an M5x0.8 port. It includes a fixed elastomer bumper at each end for deceleration and features a male M8x1.25 piston rod end for direct load coupling. The integrated magnet (-S) supports both reed and solid-state switches.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X25-10SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X25-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 25 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 ACQJ20X25-10SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 ACQJ20X25-10SB Is Used
Machining Fixture Stops
Dial in the extend stop within the 15 to 25 mm window to accommodate varying raw material thicknesses on a CNC milling fixture without machining new spacers.
Carton Changeover Flaps
Adjust the rod extension externally during a packaging line product changeover to hit different carton heights quickly without swapping out the entire cylinder.
Prototype Positioning
Use the external lock nut to find the optimal end position during prototype testing on a lab automation rig before locking the final travel distance down.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X25-10SB the Right Cylinder?
When sizing this 20 mm bore actuator, note it provides 157.1 N push and 117.8 N pull at 0.5 MPa. If your application requires less force, the neighboring 16 mm bore offers 100.5 N push, or you can step up to the 32 mm bore for 402.1 N push if higher output is needed. If your end position never varies, a fixed-stroke ACQ cylinder is sufficient. To order, confirm the 20 mm bore, 25 mm full stroke, 10 mm adjuster window, the -S magnet, and the -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 ACQJ20X25-10SB FAQ
The usable extend range is 15-25 mm (a 25 mm full stroke shortened by up to 10 mm). It delivers 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 retract stroke is unaffected by the adjustment.
No, the external M8x1.25 threaded stop changes the extend length only, not the piston area, so force remains identical to a standard ACQ. Deceleration is handled by a fixed elastomer bumper at each end. Note that a plain cylinder does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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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