Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ25X25-20B
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ25X25-20B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø25mm bore and 25mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ25 mm
- Full stroke25 mm
- Port sizeM5×0.8
- Adjuster threadM10×1.25
About the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ25X25-20B
The AirTAC ACQJ25X25-20B is a double-acting JIS compact cylinder with an external extend stop. A threaded screw and lock nut limit the outward stroke, giving a usable extend range of 5-25 mm from the 25 mm base length. The return stroke remains completely unaffected.
Output force matches a standard ACQ because the piston area is unchanged. At 0.5 MPa it delivers 245.4 N push and 188.9 N pull. The body includes magnetic switch grooves, though this specific unit ships without a magnet. It features a male M10x1.25 rod end and fixed elastomer bumpers at each end.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ25X25-20B Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ25X25-20B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Full stroke | 25 mm |
| Adjuster thread | M10×1.25 |
| 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 | M6×1.0 (F) / M10×1.25 (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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 189 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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 ACQJ25X25-20B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 25 | 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 ACQJ25X25-20B Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC lathe without machining new spacers, shortening the extend stroke up to 20 mm on the fly.
Carton Forming Tensioners
Adjust the push depth for varying box flap heights on a packaging line, relying on the fixed elastomer bumper to absorb end impacts.
Product Changeover Guides
Switch guide rails on a conveyor system by turning the external M10x1.25 adjuster to set the new 5 to 25 mm extend endpoint.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ25X25-20B the Right Cylinder?
If 188.9 N pull at 0.5 MPa is insufficient, stepping up to the 32 mm bore raises push to 402.1 N. Conversely, the 20 mm bore offers 157.1 N push if a lighter footprint is acceptable. Choose a fixed-stroke ACQ if your end position never requires tweaking. Confirm the 25 mm bore, 25 mm base stroke, 20 mm adjuster window, male rod thread, and no magnet for this build.
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 ACQJ25X25-20B FAQ
This cylinder provides 245.4 N push and 188.9 N pull at 0.5 MPa, 343.6 N push at 0.7 MPa, and a maximum push of 50 kgf at 1.0 MPa. The usable extend range is 5-25 mm, meaning the 25 mm full stroke can be shortened by up to 20 mm.
No, the adjuster only limits the extend length, so force remains identical to a standard ACQ of the same bore. The retract stroke is unaffected. The unit uses fixed elastomer bumpers for end deceleration and lacks a sensor magnet, though grooves are present.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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