Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke70 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S
The AirTAC ACQJ32X70-20S is a double-acting JIS compact cylinder with a 32mm bore and 70mm full stroke. An external M12x1.25 threaded stop and lock nut limits the extend end position, letting you dial the usable extend stroke down to 50mm without swapping parts. The retract stroke remains unaffected. Because the piston area stays the same, output force is identical to a standard ACQ of this bore.
This unit includes a built-in piston magnet (-S) for position sensing with reed or solid-state switches. It features a 16mm rod with an M8x1.25 female thread end, a PT1/8 port, and fixed NBR elastomer bumpers at both ends. Operating pressure ranges from 0.15 to 1.0 MPa, with a speed range of 30-500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 70 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| 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 | M8×1.25 (F) / M14×1.5 (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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S Is Used
Machining Fixture Stops
Dial in the extend stroke from 50 to 70mm on CNC machining fixtures to accommodate varying raw material lengths without machining custom spacers.
Packaging Changeover
Adjust the extend end position rapidly during packaging line product changeovers, tuning the push stroke for different carton sizes on the fly.
Assembly Press Trials
Set trial end positions on automated assembly presses, fine-tuning the 32mm bore clamping depth precisely before locking the M12x1.25 adjuster nut.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S the Right Cylinder?
This 32mm bore delivers 402.1N push and 301.6N pull at 0.5 MPa. If your application requires less force, the 25mm bore offers 245.4N push; for heavier loads, the 40mm bore provides 628.3N push. Choose this adjustable model when setup-varying fixtures or product-changeover stops require trial end positions between 50mm and 70mm. If a fixed extend position is always sufficient, a standard ACQ cylinder simplifies the build. Confirm ordering essentials: bore, full stroke, 20mm window, -S magnet, and female 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20S FAQ
The usable extend range is 50-70mm (70mm full stroke minus the 20mm window). Force is identical to a standard ACQ: 402.1N push and 301.6N pull at 0.5 MPa, 562.9N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut mechanically limits the extend stroke, changing only the stroke length and not the piston area, so force remains unchanged. The retract stroke is unaffected. The cylinder uses fixed NBR elastomer bumpers at both ends, not adjustable air cushions. The -S magnet works with reed or 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 usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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