Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke100 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 ACQJ20X100-20S
The AirTAC ACQJ20X100-20S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend range from 80 mm up to the full 100 mm directly on your machinery without swapping parts, 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, delivering 157.1 N push at 0.5 MPa. The bore 20 body includes a 10 mm rod, an M5x0.8 port, fixed elastomer bumpers, and an integrated magnet (-S) for electronic or reed switches.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 100 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 ACQJ20X100-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 ACQJ20X100-20S Is Used
Machine Tending Stops
Dial in the exact 80 to 100 mm extend position for varying part lengths on a CNC lathe loader without machining new hard stops.
Carton Forming Adjustments
Accommodate different box sizes on a packaging line by turning the external M8x1.25 adjuster to set the precise push depth.
Product Changeover
Speed up format changes on assembly fixtures by shifting the extend end point within the 20 mm window instead of repositioning the cylinder.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20S the Right Cylinder?
If you need slightly less push force, the bore 16 option provides 100.5 N at 0.5 MPa, whereas stepping up to bore 25 yields 245.4 N. A fixed-stroke ACQ is sufficient if your end position never requires adjustment. When ordering this adjustable unit, confirm the 20 mm bore, 100 mm full stroke, 20 mm window, the -S magnet, and your preferred 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 ACQJ20X100-20S FAQ
This cylinder provides 157.1 N push and 117.8 N pull 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 100 mm with a 20 mm adjustable window, giving a usable extend range of 80 to 100 mm.
No, the external M8x1.25 stop only limits how far the rod extends, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for end deceleration, and since it lacks a physical lock, you need an external rod lock to hold loads safely on air loss.
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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