Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-10S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-10S 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 ACQJ20X50-10S
The AirTAC ACQJ20X50-10S is a double-acting JIS compact cylinder with a 50mm full stroke and a 10mm adjustable extend window, allowing you to set the forward end position anywhere between 40mm and 50mm. An external M8x1.25 threaded stop and lock nut handles this on-machine tuning, meaning you can dial in the exact travel without swapping out parts. The return stroke remains fixed at its standard length.
Because the adjuster only limits travel and not piston area, output matches a standard ACQ exactly, delivering 157.1N push and 117.8N pull at 0.5MPa. This 20mm bore unit uses an M5x0.8 port, features a 10mm rod, and relies on fixed elastomer bumpers for end-of-stroke deceleration rather than adjustable air cushions. The built-in -S magnet works seamlessly with both reed and solid-state electronic switches.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-10S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-10S |
|---|---|
| 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 ACQJ20X50-10S
| 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 ACQJ20X50-10S Is Used
Fixture Depth Calibration
Dial in the exact clamping depth on machining fixtures without machining new spacers, using the external stop to accommodate varying part thicknesses.
Product Changeover Stops
Quickly adjust the extend endpoint on packaging lines when switching between different carton sizes, saving valuable changeover time.
Prototype Positioning
Establish optimal trial end positions on new automated test rigs by tweaking the forward travel in millimeter increments before finalizing the mechanical layout.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-10S the Right Cylinder?
If your application only needs a static 50mm forward travel, a fixed-stroke ACQ20X50S will achieve the same result more simply. Choose this ACQJ variant when you need precise end-position tuning during setup or product changeovers. If you require less force, the 16mm bore provides 100.5N push at 0.5MPa; if you need more clamping power, stepping up to the 25mm bore yields 245.4N. When ordering, confirm the 20mm bore, 50mm full stroke, 10mm window, the -S magnet option, and your preferred 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 ACQJ20X50-10S FAQ
This 20mm bore cylinder delivers a push force of 157.1N and a pull force of 117.8N at 0.5MPa, and 219.9N push at 0.7MPa, with a maximum push capacity of 32kgf at 1.0MPa. The full stroke is 50mm, and the adjustable window is 10mm, giving a usable extend range of 40-50mm.
No, the external M8x1.25 stop only limits how far the rod extends, so the force remains identical to a standard ACQ of the same bore. Deceleration is handled by fixed elastomer bumpers at both ends, and the retract stroke remains completely unaffected by the adjuster.
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
Request a Quote for Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X50-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.