Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-30SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 80mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke80 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 ACQJ20X80-30SB
The AirTAC ACQJ20X80-30SB 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 50 mm up to the full 80 mm directly on the machine without changing parts, while the retract stroke remains unaffected. It includes a male M8x1.25 rod end and an M8x1.25 adjuster thread.
Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore. The cylinder uses fixed elastomer bumpers at each end for deceleration and features built-in magnetic switch grooves. With the -S option, the internal piston magnet works seamlessly with both reed and electronic solid-state sensors.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-30SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 80 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 ACQJ20X80-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 ACQJ20X80-30SB Is Used
Machining Fixture Stops
Dial in the exact extend position on a CNC machining fixture when raw part thickness varies, using the external stop to set the precise 50 to 80 mm reach.
Product Changeover Guides
Accommodate different carton sizes on a packaging line by turning the threaded stop to modify the extend endpoint during rapid product changeovers.
Trial End Positions
Establish the optimal clamping depth on a test rig by adjusting the extend stroke in millimetre increments before finalising the mechanical setup.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-30SB the Right Cylinder?
If your setup needs less push force, the adjacent ACQJ16 bore provides 100.5 N at 0.5 MPa, or for heavier demands the ACQJ25 bore yields 245.4 N. Choose this 20 mm bore when your fixture requires exactly 157.1 N of push force at 0.5 MPa. If the end position never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 80 mm full stroke, the 30 mm adjustment window, the -S magnet, 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 ACQJ20X80-30SB FAQ
The usable extend range is 50 to 80 mm (full 80 mm stroke minus the 30 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 the maximum push is 32 kgf at 1.0 MPa.
The external M8x1.25 threaded stop with a lock nut limits the extend stroke length only; it does not alter the piston area or force. The cylinder uses fixed elastomer bumpers at each end for deceleration, not adjustable air cushions.
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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