Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ12X35-40SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ12X35-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø12mm bore and 35mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ12 mm
- Full stroke35 mm
- Port sizeM5×0.8
- Adjuster threadM5×0.8
- 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 ACQJ12X35-40SB
The AirTAC ACQJ12X35-40SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. With a full stroke of 35 mm and a 40 mm adjustment window, you can fine-tune the usable extend range from 0 up to 35 mm directly on the machine without swapping parts. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays the same, the output force is identical to a standard ACQ of this bore, delivering 56.5 N push and 42.4 N pull at 0.5 MPa. This bore 12 mm unit uses an M5x0.8 port, includes a fixed elastomer bumper at each end for end-of-stroke deceleration, and comes with the -S magnet for electronic or reed switches plus the -B male M5x0.8 rod end.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ12X35-40SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ12X35-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø12 mm |
| Full stroke | 35 mm |
| Adjuster thread | M5×0.8 |
| 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 | M3×0.5 (F) / M5×0.8 (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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | — |
| Max (@1.0 MPa) | 12 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 ACQJ12X35-40SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 12 | 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 ACQJ12X35-40SB Is Used
Fixture Position Tuning
Dial in the exact extend stop from 0 to 35 mm during initial fixture setup on small pneumatic presses, avoiding the need to machine custom spacers for each new part height.
Product Changeover Stops
Quickly alter the extend end position on packaging lines when switching between varying package lengths, using the external M5x0.8 adjuster to match the new format.
Trial End Positions
Test different extend endpoints on laboratory dispensing equipment to find the optimal contact pressure, relying on the unchanged 56.5 N force output.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ12X35-40SB the Right Cylinder?
If your application requires slightly less push force, the next size down is bore 10 (if available in your series), but note this 12 mm bore provides a solid 56.5 N push at 0.5 MPa. If you need higher force, stepping up to bore 16 increases the push to 100.5 N at 0.5 MPa. A fixed-stroke ACQ suffices if your extend end position never varies; choose this ACQJ only when on-the-fly end-position tuning is required. Confirm your ordering essentials: 12 mm bore, 35 mm full stroke, 40 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 ACQJ12X35-40SB FAQ
The usable extend range is 0-35 mm (a 35 mm full stroke minus up to a 40 mm window). Force is identical to a standard ACQ: 56.5 N push and 42.4 N pull at 0.5 MPa, 79.2 N push at 0.7 MPa, and a maximum push of 12 kgf at 1.0 MPa.
An external M5x0.8 threaded stop with a lock nut limits the extend stroke length only, leaving the retract stroke unaffected and the force unchanged. The cylinder uses a fixed elastomer bumper for deceleration, not an adjustable air cushion. It does not hold the load on air loss; for a fail-safe hold, use an external rod lock or pilot-operated check valve.
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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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