Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-75SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-75SB 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 ACQJ20X80-75SB
The AirTAC ACQJ20X80-75SB is a double-acting JIS compact cylinder with an external threaded stop that lets you fine-tune the extend end position without swapping parts. An M8x1.25 adjuster screw and lock nut limit how far the rod travels out, giving a usable extend range of 5 to 80 mm. The retract stroke remains fixed at the full 80 mm.
Because the piston area is unchanged, output force matches a standard ACQ exactly: 157.1 N push and 117.8 N pull at 0.5 MPa. The 10 mm rod uses a male M8x1.25 thread for direct load coupling, and the -S piston magnet works with reed or solid-state sensors. Deceleration relies on fixed elastomer bumpers at both ends rather than adjustable air cushions.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-75SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-75SB |
|---|---|
| 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 ACQJ20X80-75SB
| 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 ACQJ20X80-75SB Is Used
CNC Fixture Clamping
Dial in the exact clamping depth on machining centers as raw material thickness varies, preventing over-travel without re-machining stop blocks.
Packaging Lane Diverters
Adjust the pusher extension distance on the fly during product size changeovers to handle different carton widths quickly.
Assembly Press Testing
Set trial end positions for pressing bearings or pins, allowing operators to tweak insertion depth incrementally before finalizing the process.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X80-75SB the Right Cylinder?
Choosing this 20 mm bore provides 157.1 N push force at 0.5 MPa. Stepping down to a 16 mm bore drops push to 100.5 N, while moving up to a 25 mm bore increases it to 245.4 N. If your machine never needs to vary the extend endpoint, a fixed-stroke ACQ20 cylinder is simpler and sufficient. When ordering, confirm the 80 mm full stroke, 75 mm adjust window, -S magnet, and -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 ACQJ20X80-75SB FAQ
It delivers 157.1 N push and 117.8 N pull force 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 80 mm, and with the 75 mm window, the usable extend range is 5 to 80 mm.
No, the adjuster only limits how far the rod extends, leaving the retract stroke unaffected. The force remains identical to a standard ACQ because the piston area is unchanged. Fixed elastomer bumpers handle end-of-stroke deceleration, and the -S magnet enables tracking with 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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