Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30 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 ACQJ20X50-30
The AirTAC ACQJ20X50-30 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 20 mm up to the full 50 mm directly on the machine. The retract stroke remains unaffected by this adjustment.
Because the piston area stays the same, the output force is identical to a standard ACQ of this 20 mm bore, delivering 157.1 N push at 0.5 MPa. The unit features a fixed elastomer bumper at each end and an M8x1.25 adjuster thread. Note that this specific configuration ships without a magnet, although the body retains magnetic-switch grooves for future sensor upgrades.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30 |
|---|---|
| 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 ACQJ20X50-30
| 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 ACQJ20X50-30 Is Used
Machining Fixture Stops
Dial in the exact 20 to 50 mm extend position during CNC setup to accommodate varying raw material lengths without machining new stop blocks.
Package Diversion Gates
Adjust the extend stroke on packaging lines to handle different carton sizes, ensuring the diversion gate meets the correct height for each run.
Assembly Press Positioning
Set trial end positions on an assembly press to test component insertion depths before finalizing the mechanical hard stop.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-30 the Right Cylinder?
If you need less extension force, the 16 mm bore provides 100.5 N push at 0.5 MPa, while stepping up to the 25 mm bore yields 245.4 N. A fixed-stroke ACQ20X50 is sufficient if your end position never requires tuning. When ordering this adjustable version, confirm the 20 mm bore, 50 mm full stroke, 30 mm window, female M5x0.8 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 ACQJ20X50-30 FAQ
It 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 50 mm with a 30 mm window, giving a usable extend range of 20-50 mm.
The external M8x1.25 threaded stop with a lock nut limits the extend distance without changing the piston area, so the force remains identical to a standard ACQ. Deceleration is handled by a fixed elastomer bumper, not an adjustable air cushion, and the retract stroke is unaffected.
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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