Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke100 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 ACQJ20X100-75
The AirTAC ACQJ20X100-75 is a double-acting JIS compact cylinder with an external M8x1.25 threaded stop and lock nut that limits the extend stroke. You can fine-tune the extend end position on the machine across a 25 to 100 mm usable range without changing parts. The retract stroke remains completely unaffected.
Because the piston area stays the same, output force is identical to a standard ACQ of this bore. The 20 mm bore generates 157.1 N of push force at 0.5 MPa. It features a 10 mm rod, an M5x0.8 port, and fixed elastomer bumpers at both ends for end-of-stroke deceleration.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75 Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 100 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 ACQJ20X100-75
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 ACQJ20X100-75 Is Used
Machine Changeover Stops
Adapts clamping positions on machining centers quickly by dialing the extend stop between 25 and 100 mm for different part lengths.
Packaging Fold Adjustments
Sets precise tucking arm extensions on packaging lines, allowing operators to tune the end position for varied carton dimensions.
Prototype End Positions
Provides trial-and-error extend endpoints for laboratory test fixtures, letting engineers find the exact touch point before finalizing a design.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-75 the Right Cylinder?
Selecting this 20 mm bore involves sizing forces from both directions: a smaller 16 mm bore yields 100.5 N push, while the next size up, a 25 mm bore, provides 245.4 N at 0.5 MPa. If your machine never requires end-position adjustments, a fixed-stroke ACQ cylinder provides the same output without the external hardware. When ordering this adjustable unit, confirm the 100 mm full stroke, the 75 mm window, the female M5x0.8 rod thread, and your port thread form.
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 ACQJ20X100-75 FAQ
It delivers 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 25 to 100 mm, created by a 75 mm adjustment window on a 100 mm full stroke.
The external M8x1.25 threaded stop with lock nut mechanically limits how far the rod extends, shortening the stroke length without changing piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for deceleration, and while the body has sensor grooves, this specific model ships without a magnet.
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 ACQJ20X100-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.