Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-30B
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-30B 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 ACQJ20X100-30B
The AirTAC ACQJ20X100-30B 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 stroke from 70 mm up to the full 100 mm directly on your equipment without swapping parts. The retract stroke remains completely unaffected by this adjustment.
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. This bore 20 unit features a Ø10 mm rod, an M8x1.25 male rod-end thread for direct load coupling, and fixed elastomer TPU bumpers at both ends. The body includes magnetic-switch grooves, though this specific SKU ships without a magnet.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-30B Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-30B |
|---|---|
| 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 ACQJ20X100-30B
| 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 ACQJ20X100-30B Is Used
Machining Fixture Stops
Dial in the extend position from 70 to 100 mm on a CNC machining fixture to accommodate raw part tolerances without manufacturing new stop collars.
Packaging Changeover
Adjust the extend endpoint rapidly during product format changeovers on a packaging line, accommodating different carton depths on the fly.
Assembly Press Testing
Probe trial end positions on an assembly press, fine-tuning the 70-100 mm stroke window to verify contact force before committing to a hard mechanical stop.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-30B the Right Cylinder?
Selecting this bore 20 model provides 157.1 N push and 117.8 N pull at 0.5 MPa, sitting between the smaller bore 16 (100.5 N push) and larger bore 25 (245.4 N push). If your extend endpoint never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 20 mm bore, 100 mm full stroke, 30 mm adjustment window, the male M8x1.25 rod thread, and that no magnet is required.
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 ACQJ20X100-30B FAQ
This cylinder delivers 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, and the external adjuster provides a 30 mm window, allowing you to set the extend stroke anywhere from 70 to 100 mm.
An external M8x1.25 threaded stop with a lock nut mechanically limits how far the rod extends, changing only the stroke length while output force remains identical to a standard ACQ. Fixed elastomer bumpers decelerate the piston near travel ends, but this cylinder will not hold a load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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