Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40SB 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 ACQJ20X35-40SB
The AirTAC ACQJ20X35-40SB is a double-acting JIS compact cylinder with a 20mm bore and a 35mm full stroke. An external M8x1.25 threaded stop with a lock nut limits the extend end position, providing a usable extend range of 0-35mm. The retract stroke remains completely unaffected. Because the piston area stays constant, output force equals a standard ACQ, delivering 157.1N push and 117.8N pull at 0.5MPa.
This unit includes a male M8x1.25 rod thread for direct coupling and a built-in piston magnet compatible with reed or electronic solid-state switches. It features fixed elastomer bumpers at each end rather than adjustable air cushions. Operating pressure spans 0.15-1.0MPa, and the M5x0.8 port ensures reliable airflow within the compact riveted body.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40SB |
|---|---|
| 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 ACQJ20X35-40SB
| 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 ACQJ20X35-40SB Is Used
Machine Tending Setup
Dial in the exact extend distance during initial fixture setup on a CNC lathe, using the external stop to fine-tune the gripper reach without machining new spacers.
Product Changeover Stops
Adjust the extend endpoint on a packaging line when switching between box sizes, utilizing the 0-35mm range to accommodate varying flap heights quickly.
Prototype End Positions
Test different pressing depths on an assembly fixture by turning the threaded adjuster, finding the optimal travel before committing to a hard-coded standard cylinder.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X35-40SB the Right Cylinder?
If you need less push than the 157.1N at 0.5MPa provided here, stepping down to a 16mm bore drops the force to 100.5N. For heavier loads, a 25mm bore raises the 0.5MPa push to 245.4N. Choose this adjustable version when trial end positions or product changeovers require on-machine tuning without swapping parts; a fixed-stroke ACQ is sufficient if the extend distance never changes. Confirm your ordering essentials: 20mm bore, 35mm full stroke, 40mm 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 ACQJ20X35-40SB FAQ
The force is identical to a standard ACQ with a 20mm bore, delivering 157.1N push and 117.8N pull at 0.5MPa, 219.9N push at 0.7MPa, and a maximum push of 32kgf at 1.0MPa. The usable extend range is 0-35mm, created by the 40mm adjustment window on the 35mm full stroke.
An external M8x1.25 threaded stop with a lock nut limits the extend stroke length without changing the piston area, so force remains unchanged. The cylinder uses fixed elastomer bumpers for end-of-stroke deceleration rather than adjustable air cushions. The included -S magnet works with both reed and 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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