Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-40S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-40S 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 ACQJ20X90-40S
The ACQJ20X90-40S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend stroke. You get a usable extend range of 50-90 mm because the 40 mm adjustment window shortens the 90 mm full stroke. The retract travel remains completely unaffected.
Output force matches a standard ACQ bore 20 exactly, giving 157.1 N push and 117.8 N pull at 0.5 MPa. It features a 10 mm piston rod, an M5x0.8 female rod end, and fixed elastomer bumpers. The installed -S magnet works with reed or solid-state switches.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-40S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-40S |
|---|---|
| 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 ACQJ20X90-40S
| 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 ACQJ20X90-40S Is Used
Machining Fixture Stops
Dial in the exact extend position for varying raw material thicknesses on a milling fixture without machining new spacers.
Carton Changeover
Adjust the pusher end-stop on the fly when switching between different box sizes on a packaging line.
Prototype Positioning
Find the ideal extend endpoint during equipment R&D by turning the external M8x1.25 adjuster instead of swapping cylinders.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-40S the Right Cylinder?
If you need less push, the 16 mm bore provides 100.5 N at 0.5 MPa, or step up to the 25 mm bore for 245.4 N. Choose this 20 mm bore if 157.1 N fits your load. A fixed-stroke ACQ works fine if your end position never varies. Confirm your ordering essentials: 20 mm bore, 90 mm full stroke, 40 mm window, -S magnet, and the M5x0.8 female rod 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 ACQJ20X90-40S FAQ
The usable extend range is 50-90 mm. 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 maximum push is 32 kgf at 1.0 MPa.
No. The external M8x1.25 threaded stop only limits how far the rod extends, leaving the retract stroke and piston area untouched. Fixed elastomer bumpers decelerate the load at the ends, and the -S magnet supports reed or electronic switches.
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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