Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-50
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-50 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke90 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 ACQJ20X90-50
The AirTAC ACQJ20X90-50 is a double-acting JIS compact cylinder with a 90 mm full stroke and a 50 mm adjustable extend window. An external M8x1.25 threaded stop with a lock nut lets you set the extend end position anywhere from 40 mm to 90 mm directly on the machine. The retract stroke remains unaffected. Because the piston area stays constant, force is identical to a standard ACQ of this bore. The unit pushes 157.1 N and pulls 117.8 N at 0.5 MPa, with a maximum push capacity of 32 kgf at 1.0 MPa.
This bore 20 mm actuator features a 10 mm piston rod and an M5x0.8 female rod-end thread. It uses an M5x0.8 port and fixed elastomer TPU bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. The body includes magnetic-switch grooves, though this specific configuration ships without a magnet. Operating pressure spans 0.15 to 1.0 MPa, and the proof pressure is 1.5 MPa. The cylinder operates reliably across a -20 to +70 C temperature range.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-50 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-50 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 90 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 ACQJ20X90-50
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×90 | 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 ACQJ20X90-50 Is Used
Machining Fixture Stops
Dial in the exact extend position from 40 to 90 mm on a CNC machining fixture to accommodate varying part widths without machining custom spacers.
Packaging Changeover
Adjust the extend end stop during packaging line format changes to hit different carton push-off distances rapidly.
Prototype Positioning
Trial different end positions on a test rig by turning the external stop screw, allowing rapid iteration of extension distances.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-50 the Right Cylinder?
If your setup requires slightly less push force, the bore 16 option delivers 100.5 N at 0.5 MPa, while stepping up to the bore 25 variant provides 245.4 N for heavier loads. A fixed-stroke ACQ is sufficient if your extend position never varies. When ordering this adjustable model, confirm the 20 mm bore, 90 mm full stroke, 50 mm window, female rod thread, and whether you need the S magnet option for reed or solid-state sensors.
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 ACQJ20X90-50 FAQ
The usable extend range is 40-90 mm via a 50 mm window. Force is identical to a standard ACQ: push is 157.1 N and pull is 117.8 N at 0.5 MPa, push is 219.9 N at 0.7 MPa, and max push is 32 kgf at 1.0 MPa.
An external M8x1.25 threaded stop with a lock nut limits the extend stroke only; the retract stroke is unaffected. The cylinder uses fixed elastomer TPU bumpers at both ends instead of adjustable air cushions, so for high energy loads you should add an external shock absorber.
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
Request a Quote for Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.