Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-20S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-20S 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 ACQJ20X75-20S
The AirTAC ACQJ20X75-20S is a double-acting JIS compact cylinder with a 75mm full stroke and a 20mm adjustable extend window, allowing you to dial in the forward end position anywhere from 55mm to 75mm directly on the machine. An external M8x1.25 threaded stop and lock nut handles this tuning, while the retract stroke remains fixed and unaffected. A built-in magnet (-S) pairs with reed or solid-state switches.
Because the adjuster only limits piston travel, the output force stays identical to a standard ACQ bore 20. You get 157.1N push and 117.8N pull at 0.5MPa, peaking at a 32kgf max push at 1.0MPa. The body uses a fixed elastomer TPU bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-20S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-20S |
|---|---|
| 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 ACQJ20X75-20S
| 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 ACQJ20X75-20S Is Used
Machining Fixture Calibration
Dial in the exact clamping reach on a CNC fixture, allowing operators to shift the extend endpoint between 55mm and 75mm when raw material thickness varies.
Product Changeover Stops
Adapt packaging line side-rails instantly by turning the external M8x1.25 adjuster screw, avoiding the need to swap out entire cylinders for new carton formats.
Prototype End Positions
Safely test different extension distances on a new automated assembly rig by limiting the forward travel, preventing crashes during initial mechanical setup.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X75-20S the Right Cylinder?
If you need slightly less push at 0.5MPa, the adjacent bore 12 delivers 56.5N, while stepping up to bore 25 provides 245.4N. A fixed-stroke ACQ is sufficient if your extend endpoint never requires tweaking. To order, confirm the 20mm bore, 75mm full stroke, 20mm window, the -S 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 ACQJ20X75-20S FAQ
This 20mm bore cylinder provides 157.1N push and 117.8N pull at 0.5MPa, 219.9N push at 0.7MPa, and a maximum push of 32kgf at 1.0MPa. The full stroke is 75mm with a 20mm adjustment window, giving a usable extend range of 55-75mm. It features an M5x0.8 port and an M8x1.25 adjuster thread.
No, the force remains identical to a standard ACQ of the same bore because the adjuster only limits how far the rod extends, not the piston area. The retract stroke is unaffected. Deceleration is handled by fixed elastomer bumpers rather than an adjustable air cushion, and the -S magnet works with both reed and electronic 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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