Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-30
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-30 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 ACQJ20X30-30
The AirTAC ACQJ20X30-30 is a double-acting JIS compact cylinder featuring an external M8x1.25 threaded stop with a lock nut. This mechanism limits the extend end position, providing a usable extend range of 0-30 mm by trimming up to 30 mm from the 30 mm full stroke. The retract stroke remains completely unaffected.
Because the piston area stays constant, output force is identical to a standard ACQ of this bore, delivering 157.1 N push at 0.5 MPa. The body includes magnetic-switch grooves, though this specific unit ships without a magnet. It relies on a fixed TPU elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-30 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-30 |
|---|---|
| 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 ACQJ20X30-30
| 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 ACQJ20X30-30 Is Used
Prototype Positioning
Dial in trial extend end positions on a new machining fixture without machining custom spacers or swapping components.
Product Changeover
Quickly re-set the extend stop for varying product lengths on a packaging line, using the external lock nut to secure the new 0-30 mm depth.
Assembly Pin Driving
Fine-tune the insertion depth of a pin press in an electronics assembly machine to prevent over-travel on delicate boards.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X30-30 the Right Cylinder?
When sizing this 20 mm bore actuator, consider the neighbouring bores for your force requirements. Dropping down to a 16 mm bore reduces the 0.5 MPa push force to 100.5 N, while stepping up to a 25 mm bore increases it to 245.4 N. If your application never requires end-position trimming, a fixed-stroke ACQ cylinder provides the same output in a simpler package. To order this adjustable version correctly, confirm the 20 mm bore, 30 mm full stroke, 30 mm adjustment window, female M5x0.8 rod-end thread, and PT port form.
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 ACQJ20X30-30 FAQ
This 20 mm bore cylinder 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. The usable extend range is 0-30 mm, achieved by shortening the 30 mm full stroke by up to a 30 mm window.
An external M8x1.25 threaded stop and lock nut mechanically limits the extend length without altering the piston area, meaning force remains identical to a standard ACQ. The cylinder uses a fixed TPU elastomer bumper for deceleration, not an adjustable air cushion. Note that a plain ACQ-type does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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