Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-20B
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-20B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 30mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke30 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 ACQJ20X30-20B
The AirTAC ACQJ20X30-20B is a double-acting JIS compact cylinder with an external extend stop. A threaded rod with a lock nut lets you shorten the extend stroke by up to 20mm. This gives a usable extend range of 10-30mm. The retract stroke remains unaffected.
Because the piston area stays the same, the force is identical to a standard ACQ of this bore. You get 157.1N push and 117.8N pull at 0.5MPa. The body features sensor grooves and fixed TPU bumpers. This unit has a male M8x1.25 rod end and an M5x0.8 port.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-20B Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-20B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 30 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 ACQJ20X30-20B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×30 | 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 ACQJ20X30-20B Is Used
Machining Fixture Stops
Dial in the exact 10-30mm extend position for varying part dimensions on a CNC lathe loader without machining new stop collars.
Carton Changeover
Quickly reset the extend end stop on a packaging line when switching box sizes, using the M8x1.25 male rod to push the flap folder.
Prototype End Positions
Test multiple extend endpoints on a lab test rig to find the ideal travel before locking the adjuster nut in place.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-20B the Right Cylinder?
If you need less push force, the 16mm bore gives 100.5N push at 0.5MPa. For more power, the 25mm bore yields 245.4N. Choose this 20mm bore when your fixture needs 157.1N push force and exact 10-30mm extend positioning. If the end position never changes, a fixed-stroke ACQ is simpler. When ordering, confirm the 30mm full stroke, 20mm window, male M8x1.25 rod thread, and M5x0.8 port.
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 ACQJ20X30-20B FAQ
It delivers 157.1N push and 117.8N pull at 0.5MPa, 219.9N push at 0.7MPa, and a maximum push of 32kgf at 1.0MPa. The full stroke is 30mm with a 20mm window, allowing a usable extend range of 10-30mm.
The external M8x1.25 threaded stop with lock nut limits the extend distance without changing the piston area, so force remains identical to a standard ACQ. Fixed TPU bumpers decelerate the rod at both ends. Note that this model lacks a sensor magnet and will not hold a load on air loss without an external rod lock.
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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