Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-30SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-30SB 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 ACQJ20X35-30SB
The AirTAC ACQJ20X35-30SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend stroke. You can fine-tune the extend end position on the machine without swapping parts, yielding a usable extend range of 5-35 mm from the 35 mm full stroke. The retract stroke remains completely unaffected.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore: 157.1 N push and 117.8 N pull at 0.5 MPa. The 10 mm rod features a male M8x1.25 thread (-B) for direct load coupling. This unit includes a piston magnet (-S) for position sensing and uses fixed elastomer bumpers at both ends rather than adjustable air cushions.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-30SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-30SB |
|---|---|
| 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 ACQJ20X35-30SB
| 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 ACQJ20X35-30SB Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC lathe fixture by turning the external stop screw, accommodating raw material tolerances without remachining jaws.
Carton Changeover Guides
Adjust the folding flap position on a packaging line during product size changeovers, setting the stroke anywhere from 5 to 35 mm to match box dimensions.
Prototype Assembly Probes
Test varying insertion depths for electronic component seating on a prototype assembly rig, using the lock nut to secure the optimal trial end position.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-30SB the Right Cylinder?
Choosing this 20 mm bore provides 157.1 N push at 0.5 MPa; stepping down to a 16 mm bore drops push to 100.5 N, while a 25 mm bore raises it to 245.4 N. If your application always operates at a fixed extension length, a standard ACQ cylinder will suffice. When ordering, confirm the 35 mm full stroke, 30 mm adjuster window, the -S magnet, and the -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 ACQJ20X35-30SB FAQ
The usable extend range is 5-35 mm (a 35 mm full stroke shortened by up to a 30 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 the extend stroke without changing the piston area, so force remains unchanged. The retract stroke is unaffected. Deceleration relies on fixed elastomer bumpers, and the -S magnet works with reed or electronic solid-state switches.
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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