Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-75SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke90 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 ACQJ20X90-75SB
The AirTAC ACQJ20X90-75SB is a double-acting JIS compact cylinder with an external extend-stroke adjuster. A threaded stop and lock nut limit the outward travel, yielding a usable extend range of 15 to 90 mm. The return stroke remains fixed at the full 90 mm. An M8x1.25 male piston rod end couples directly to your load.
Because the piston area is unchanged, output force equals a standard ACQ of the same bore: 157.1 N push at 0.5 MPa. The unit includes a built-in magnet for reed or solid-state switches and fixed elastomer bumpers at each end. Operating speed spans 30 to 500 mm/s.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-75SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 90 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 ACQJ20X90-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×90 | 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 ACQJ20X90-75SB Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC lathe fixture without machining new spacer blocks.
Carton Changeover
Rapidly alter the flap-folding stroke depth during packaging line product size transitions.
Prototype Positioning
Establish optimal trial end positions for a new assembly station before locking the nut down.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-75SB the Right Cylinder?
If your application only needs a fixed 90 mm end position, a standard ACQ20X90 cylinder is sufficient. For setups requiring on-the-fly end-stop tuning, this ACQJ20X90-75SB is the correct choice. When sizing neighbours, the bore 12 provides 56.5 N push at 0.5 MPa, while the bore 25 offers 245.4 N. Verify your ordering code includes the 20 mm bore, 90 mm full stroke, 75 mm window, S magnet, and B male rod 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 ACQJ20X90-75SB FAQ
The usable extend range is 15 to 90 mm (90 mm full stroke minus the 75 mm window). Force is identical to a standard ACQ: 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.
An external M8x1.25 threaded stop with a lock nut limits outward travel, while the retract stroke is unaffected. The adjuster changes stroke length only, so force remains unchanged. Fixed elastomer bumpers decelerate the load at both ends, though a plain cylinder drifts on air loss and requires an external rod lock for fail-safe holding.
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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