Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40 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 ACQJ20X35-40
The AirTAC ACQJ20X35-40 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that restricts the extend end position. With a full stroke of 35mm and a 40mm adjustment window, you can fine-tune the usable extend range from 0 up to 35mm directly on your equipment without swapping parts. The retract movement remains completely unaffected by this stop.
Because the piston area is unchanged, output force remains identical to a standard ACQ of the same bore, yielding 157.1N push at 0.5MPa. The body incorporates sensor grooves for reed or solid-state switches, though this specific unit ships without a magnet. Deceleration relies on a fixed TPU elastomer bumper at each end rather than an adjustable air cushion.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40 |
|---|---|
| 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 ACQJ20X35-40
| 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 ACQJ20X35-40 Is Used
Prototype Positioning
Dial in the exact extend endpoint during trial runs on a new machining fixture without machining new spacers.
Product Changeover Stops
Quickly alter the extend reach on a packaging line when switching between carton sizes.
Variable Depth Pushing
Adjust how far a probe enters a housing on an electronics assembly rig without replacing the actuator.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40 the Right Cylinder?
If your application only requires a fixed 35mm reach, a standard ACQ20X35 cylinder is sufficient and simpler. However, if you need on-the-fly end-position tuning for varying setups, this adjustable model is correct. Regarding sizing, stepping down to a 16mm bore drops the 0.5MPa push force to 100.5N, while moving up to a 25mm bore raises it to 245.4N. When ordering, verify the 20mm bore, 35mm full stroke, 40mm window, female M5x0.8 rod thread, and M5x0.8 port.
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 ACQJ20X35-40 FAQ
The usable extend range is 0-35mm (full 35mm stroke minus the 40mm window). Force is identical to a standard ACQ: 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.
An M8x1.25 threaded adjuster with a lock nut limits only the extend stroke; the retract stroke is unaffected. The stop changes stroke length but not piston area, so force is unchanged. End-of-travel deceleration is handled by a fixed TPU elastomer bumper, not an adjustable air cushion.
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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