Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20SB
The AirTAC ACQJ32X300-20SB is a double-acting, single-rod JIS compact cylinder engineered for adjustable extend positioning. It features a 32mm bore and a 300mm full stroke, classifying it as a long-stroke, made-to-order variant that exceeds the standard 100mm maximum for this bore size. Equipped with a male piston rod thread (M14x1.5), it couples directly to your load. An external threaded stop with a lock nut lets you fine-tune the extend end position on the machine itself, yielding a usable extend range of 280 to 300mm without swapping parts. The retract stroke remains completely unaffected.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore: 402.1N push and 301.6N pull at 0.5MPa, or 562.9N push at 0.7MPa. The unit includes a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. The -S option provides a built-in piston magnet compatible with both reed and electronic solid-state switches via the integrated sensor grooves. Operating pressure spans 0.15 to 1.0MPa, with a speed range of 30 to 500mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 300 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 ACQJ32X300-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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 ACQJ32X300-20SB Is Used
Machine Tending Setup
Dial in the exact 280-300mm extend reach for a CNC lathe loading door without machining custom spacers during initial fixture setup.
Product Changeover Stops
Quickly alter the extend stop position on a packaging line conveyor to accommodate different carton lengths between production runs.
Assembly Press Trials
Test various end-of-stroke clamping depths on an assembly press prototype, locking the M12x1.25 adjuster nut once the optimal position is found.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20SB the Right Cylinder?
When sizing this actuator, consider the 402.1N push force at 0.5MPa. Stepping down to a 25mm bore yields 245.4N, whereas stepping up to a 40mm bore provides 628.3N. If your application requires a fixed extend end position and never needs on-the-fly tweaking, a standard ACQ32 cylinder will suffice. To order this adjustable variant correctly, confirm the 32mm bore, 300mm full stroke, 20mm adjuster window, the -S magnet for sensing, and the -B male rod thread. Note that a plain ACQ-type cylinder will not hold its load on air loss; for fail-safe holding, specify an external rod lock or pilot-operated check valve.
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 ACQJ32X300-20SB FAQ
This 32mm bore cylinder provides 402.1N push and 301.6N pull at 0.5MPa, 562.9N push at 0.7MPa, and a maximum push of 82kgf at 1.0MPa. The full stroke is 300mm, but the external adjuster allows you to shorten the extend travel by up to 20mm, giving a usable extend range of 280-300mm.
No, the adjuster only limits the extend stroke length; the piston area remains the same, so force is identical to a standard ACQ32. The cylinder uses fixed NBR elastomer bumpers at both ends for deceleration rather than adjustable air cushions. The built-in -S magnet works with reed or electronic solid-state switches.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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