Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X40-10S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X40-10S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke40 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 ACQJ20X40-10S
The AirTAC ACQJ20X40-10S 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 rod extension on the machine across a 30 to 40 mm usable range (40 mm full stroke minus the 10 mm window). The retract stroke remains completely unaffected. An M8x1.25 adjuster thread handles the end-position modifications.
Because the piston area stays the same, force output is identical to a standard ACQ of this bore. The 20 mm bore generates 157.1 N of push force and 117.8 N of pull force at 0.5 MPa. The body features fixed elastomer bumpers at both ends for end-of-stroke deceleration, and the included -S magnet works with reed or solid-state electronic switches via the built-in sensor grooves.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X40-10S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X40-10S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 40 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 ACQJ20X40-10S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 ACQJ20X40-10S Is Used
Tooling Setup Variation
Dial in the exact clamping extension on machining fixtures when raw material thicknesses vary between production batches.
Product Changeover Stops
Modify the extended diverting arm position on packaging lines to handle different carton widths without swapping hardware.
Trial End Positions
Test and establish the precise extend endpoint for new automated assembly processes before finalizing the mechanical layout.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X40-10S the Right Cylinder?
If your application requires less push force, the 16 mm bore provides 100.5 N at 0.5 MPa. For heavier loads, stepping up to the 25 mm bore yields 245.4 N. A standard fixed-stroke ACQ20 is sufficient if your extend position never needs adjustment. To order this cylinder correctly, confirm the 20 mm bore, 40 mm full stroke, 10 mm adjustable 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 ACQJ20X40-10S FAQ
At 0.5 MPa it provides 157.1 N push and 117.8 N pull force, and 219.9 N push at 0.7 MPa. The maximum push is 32 kgf at 1.0 MPa. The full stroke is 40 mm with a 10 mm adjustable window, allowing a usable extend range of 30 to 40 mm.
An external M8x1.25 threaded stop with a lock nut limits how far the rod extends, shortening the stroke without altering the piston area. The force remains identical to a standard ACQ, and fixed elastomer bumpers decelerate the load at stroke ends.
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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