Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke50 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 ACQJ20X50-30S
The AirTAC ACQJ20X50-30S is a double-acting JIS compact cylinder with an external M8x1.25 threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend stroke anywhere from 20 mm up to the full 50 mm directly on your machine. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, the output force is identical to a standard ACQ bore 20. You get 157.1 N of push force and 117.8 N of pull force at 0.5 MPa. The cylinder body uses a compact C-clip riveted design with fixed elastomer bumpers at both ends and integrated magnetic-switch grooves for position sensing.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 50 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 ACQJ20X50-30S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 ACQJ20X50-30S Is Used
Fixture Depth Tuning
Dial in exact clamping depth on machining fixtures without swapping out physical spacer rings or rods.
Product Changeover Stops
Rapidly reset the extend end stop for different package widths on a packaging line during format changes.
Prototype End Positions
Safely trial various extend end positions on new automated assembly machinery before locking the final location.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30S the Right Cylinder?
If you need less push force, the adjacent bore 12 yields 56.5 N at 0.5 MPa, while stepping up to bore 25 provides 245.4 N. If your extend end position never varies, a fixed-stroke ACQ20X50 cylinder is sufficient. When ordering, confirm the 20 mm bore, 50 mm full stroke, 30 mm adjustment window, the -S piston magnet, and the default female M5x0.8 rod-end 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 ACQJ20X50-30S FAQ
It 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 50 mm with a 30 mm window, allowing an adjustable extend range of 20-50 mm. The retract stroke is unaffected.
An external M8x1.25 threaded adjuster with a lock nut limits the extend stroke length only, meaning the output force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers at both ends for deceleration, and the built-in -S magnet works with reed or electronic 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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