Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 15mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke15 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 ACQJ20X15-20SB
The AirTAC ACQJ20X15-20SB is a double-acting JIS compact cylinder with a 20mm bore and a 15mm full stroke. Featuring an external M8x1.25 threaded stop and lock nut, it restricts the extend end position to yield a usable forward range of 0-15mm. The retract distance remains completely unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
Delivering 157.1N push and 117.8N pull at 0.5 MPa, the unit incorporates fixed elastomer bumpers at both ends rather than adjustable air cushions. The -SB configuration includes a male M8x1.25 piston rod end coupling directly to loads, plus an internal magnet compatible with reed or solid-state switches.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 15 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 ACQJ20X15-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 ACQJ20X15-20SB Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC milling fixture without machining new spacers for every part revision.
Packaging Carton Folders
Adapt folding flap depth rapidly during packaging line changeovers to accommodate various box heights.
Laboratory Dispenser Probes
Set precise liquid probe dip depths on lab automation rigs, allowing iterative tuning without swapping cylinders.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X15-20SB the Right Cylinder?
If you need slightly less thrust, the 16mm bore variant provides 100.5N push at 0.5 MPa, whereas the 25mm bore option raises push force to 245.4N for heavier demands. A fixed-stroke ACQ suffices if your end position never varies. When ordering, verify the 20mm bore, 15mm full stroke, 20mm adjuster 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 ACQJ20X15-20SB FAQ
It delivers 157.1N push and 117.8N pull at 0.5 MPa, 219.9N push at 0.7 MPa, and a maximum push of 32 kgf at 1.0 MPa. The usable extend range is 0-15mm (15mm full stroke minus the 20mm window).
No, the M8x1.25 external threaded stop only shortens the forward stroke length; force remains identical to a standard ACQ, and the retract stroke is unaffected. Deceleration relies on fixed elastomer bumpers, and the internal magnet works with reed or solid-state 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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