Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-20
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-20 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 35mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke35 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 ACQJ20X35-20
The ACQJ20X35-20 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 outward travel on the machine itself, yielding a usable extend range of 15-35 mm from the 35 mm full stroke. The retract distance remains completely unaffected by this adjustment.
Because the piston area stays the same, output force is identical to a standard ACQ bore 20 unit, delivering 157.1 N push at 0.5 MPa. The body incorporates fixed elastomer bumpers for end-of-stroke damping and features magnetic-switch grooves, though this specific configuration ships without a magnet. It uses an M5x0.8 port and an M8x1.25 adjuster thread.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-20 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-20 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 35 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 ACQJ20X35-20
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×35 | 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 ACQJ20X35-20 Is Used
Machining Fixture Stops
Dial in exact clamping reach on a CNC milling fixture during initial setup, avoiding the need to machine custom spacer blocks.
Carton Changeover
Adapt the pressing stroke on a packaging line when switching between different box heights, using the external lock nut to set the new end point.
Prototype Positioning
Find the optimal extension distance for a testing probe on a laboratory rig by threading the stop in or out before locking it down.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-20 the Right Cylinder?
When sizing this 20 mm bore actuator, consider the neighbouring options: a 16 mm bore yields 100.5 N push @0.5 MPa, while a 25 mm bore provides 245.4 N. If your end-position never varies, a fixed-stroke ACQ20 cylinder is simpler and sufficient. To order this adjustable variant correctly, confirm the 20 mm bore, 35 mm full stroke, 20 mm adjustment window, the female rod-end thread, and whether you require the -S magnet option for sensor feedback.
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 ACQJ20X35-20 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 usable extend range is 15-35 mm, created by a 20 mm adjustment window on a 35 mm full stroke.
The external M8x1.25 threaded stop with lock nut mechanically limits how far the rod extends, shortening the outward stroke without changing the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected, and fixed elastomer bumpers handle end-of-travel damping.
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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