Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20SB 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 ACQJ20X90-20SB
The AirTAC ACQJ20X90-20SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 70 mm up to the full 90 mm directly on your machinery, while the retract stroke remains completely unaffected. Because the piston area stays the same, output force is identical to a standard ACQ of this bore.
This 20 mm bore model pushes with 157.1 N at 0.5 MPa and pulls with 117.8 N. It features a 10 mm piston rod, an M8x1.25 male rod-end thread for direct load coupling, and a fixed elastomer bumper at each end. The built-in piston magnet works with both reed and solid-state switches, and the M8x1.25 adjuster thread allows precise stroke modifications without swapping parts.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20SB |
|---|---|
| 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 ACQJ20X90-20SB
| 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 ACQJ20X90-20SB Is Used
Machining Fixture Stops
Dial in the exact extend position of clamping arms on CNC mills when raw part dimensions vary slightly, ensuring correct grip without remachining hard stops.
Product Diverting Gates
Adjust the stroke of sorting flappers on packaging lines during product changeover, allowing a single actuator to handle multiple box widths efficiently.
Prototype Press Tonnage
Set trial end positions on light-duty assembly presses during R&D, safely testing different engagement depths before finalizing the mechanical layout.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20SB the Right Cylinder?
If 157.1 N of push force at 0.5 MPa is too high, step down to the 16 mm bore (100.5 N push); if you need more thrust, move up to the 25 mm bore (245.4 N push). A fixed-stroke ACQ is sufficient if your extend endpoint never requires adjustment. To order this cylinder correctly, confirm the 20 mm bore, 90 mm full stroke, 20 mm adjustment window, the -S magnet for sensing, and the -B male 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 ACQJ20X90-20SB 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, 219.9 N push at 0.7 MPa, and a maximum push of 32 kgf at 1.0 MPa. The full stroke is 90 mm, and the external stop allows an adjustable usable extend range of 70-90 mm.
The external M8x1.25 threaded stop with a lock nut physically limits how far the rod extends, shortening the stroke length without altering the piston area, meaning force is identical to a standard ACQ. The retract stroke is unaffected, and a fixed elastomer bumper decelerates the load at both ends.
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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