Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-30
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-30 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke75 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 ACQJ20X75-30
The AirTAC ACQJ20X75-30 is a double-acting JIS compact cylinder with a 20 mm bore and a 75 mm full stroke. An external threaded stop with a lock nut limits the extend end position, providing a usable extend range of 45-75 mm. The retract stroke remains unaffected by this adjustment. Because the piston area is unchanged, the output force is identical to a standard ACQ of this size, yielding 157.1 N push force at 0.5 MPa.
This unit features a 10 mm piston rod and an M5x0.8 female rod-end thread. It uses a fixed elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. The body includes magnetic-switch grooves, though this specific configuration ships without a magnet. Operating pressure spans 0.15-1.0 MPa, and the standard M5x0.8 port uses PT threading.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-30 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-30 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 75 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 ACQJ20X75-30
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×75 | 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 ACQJ20X75-30 Is Used
Machining Fixture Stops
Dial in the exact extend position for varying raw part sizes on a CNC lathe loader without machining custom spacer rings.
Packaging Diverters
Adjust the stroke length on a packaging line diverter to handle different carton widths during rapid product changeover.
Assembly Press Trials
Fine-tune the extend end position during prototype assembly press testing to find the optimal insertion depth before locking the nut.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-30 the Right Cylinder?
If you need less force, the adjacent 16 mm bore provides 100.5 N push at 0.5 MPa, while the larger 25 mm bore offers 245.4 N push if your application requires more power. A fixed-stroke ACQ20X75 is sufficient if your end position never varies and requires no on-the-fly tuning. To configure this ACQJ model correctly, confirm the 20 mm bore, 75 mm full stroke, 30 mm adjustment window, female rod thread, and whether you need the S magnet option for sensing.
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 ACQJ20X75-30 FAQ
The force is identical to a standard ACQ20 bore: 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 usable extend range is 45-75 mm, achieved by shortening the 75 mm full stroke by up to the 30 mm adjustment window.
An external M8x1.25 threaded stop with a lock nut mechanically limits how far the rod extends, changing only the stroke length and not the piston area, so force remains unchanged. The cylinder uses fixed elastomer bumpers at each end for deceleration rather than an adjustable air cushion. This model lacks a magnet, though the body retains sensor grooves for adding switches if needed later.
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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