Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-30
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-30 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke45 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 ACQJ20X45-30
The AirTAC ACQJ20X45-30 is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that limits the extend end position. You can fine-tune the forward stroke on the machine across a 15-45 mm usable range without swapping components, while the retract stroke remains unaffected. The adjuster mechanism alters travel length only, so output force stays identical to a standard ACQ of this bore.
Equipped with a 10 mm piston rod and an M5x0.8 port, this unit delivers 157.1 N push and 117.8 N pull at 0.5 MPa. It utilizes fixed elastomer TPU bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. The body incorporates magnetic-switch grooves, though this specific configuration ships without a magnet.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-30 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-30 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 45 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 ACQJ20X45-30
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×45 | 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 ACQJ20X45-30 Is Used
Machining Fixture Positioning
Dial in the exact clamping extension on a CNC fixture during setup, allowing operators to compensate for varying raw material thicknesses without machining new spacers.
Packaging Diverter Stroke
Adjust the pusher rod end position on a packaging line to handle different carton depths, enabling rapid product changeover by simply turning the external stop screw.
Electronic Assembly Stops
Set precise trial end positions for a pick-and-place head during PCB assembly, tweaking the forward travel to avoid damaging delicate components before finalizing the cycle.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X45-30 the Right Cylinder?
When sizing this 20 mm bore actuator, verify if the 157.1 N push force at 0.5 MPa is sufficient, or if stepping up to a 25 mm bore providing 245.4 N is necessary; conversely, a 16 mm bore offers 100.5 N if loads are lighter. If your application always operates at a fixed 45 mm extension, a standard ACQ cylinder will suffice without needing the adjustment hardware. To order, confirm the 20 mm bore, 45 mm full stroke, 30 mm adjuster window, female M5x0.8 rod thread, and whether a -S magnet is required for sensing.
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 ACQJ20X45-30 FAQ
This 20 mm bore cylinder provides a push force of 157.1 N and a pull force of 117.8 N at 0.5 MPa, with a push force of 219.9 N at 0.7 MPa, and a maximum push capacity of 32 kgf at 1.0 MPa. The full stroke is 45 mm with a 30 mm adjustment window, resulting in a usable extend range of 15-45 mm.
The external M8x1.25 threaded stop with a lock nut mechanically limits the forward extension, changing only the stroke length while the output force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for deceleration and relies on air pressure to maintain position; it will not hold the load if air is lost, requiring an external rod lock 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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