Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20B 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 ACQJ32X300-20B
The ACQJ32X300-20B is a double-acting JIS compact cylinder featuring a 32mm bore and a 300mm long-stroke design. An external stopper screw with a lock nut restricts the rod extension, allowing you to fine-tune the forward end position within a 280 to 300mm usable range directly on the machine. The return stroke remains completely unaffected. As a made-to-order long-stroke variant, it exceeds the standard 100mm maximum for this bore size.
Because the adjuster only alters travel length, the piston area stays constant, meaning force is identical to a standard ACQ of the same size. At 0.5 MPa it delivers 402.1N of push force and 301.6N of pull force. The unit includes fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration and features a male M14x1.5 piston rod thread for direct load coupling. The body retains sensor grooves, though this specific configuration ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20B |
|---|---|
| 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 ACQJ32X300-20B
| 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 ACQJ32X300-20B Is Used
Machining Fixture Clamps
Dial in the exact clamping reach on a CNC machining fixture during setup, compensating for varying workpiece thicknesses without swapping out cylinder hardware.
Product Changeover Diverters
Adjust the extension limit of sorting diverters on a packaging line to accommodate different carton lengths during rapid product changeovers.
Press Trial Positions
Test multiple end-of-stroke positions on a light assembly press to find the optimal forming depth before committing to a fixed stop length.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-20B the Right Cylinder?
When sizing this actuator, consider the 402.1N push force at 0.5 MPa. A smaller 25mm bore yields 245.4N push, whereas stepping up to a 40mm bore provides 628.3N push. If your end position never requires adjustment, a fixed-stroke ACQ cylinder is sufficient. To order this adjustable variant correctly, confirm the 32mm bore, the 300mm full stroke, the 20mm adjustment window, the male rod thread (-B), and the PT1/8 port size.
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 ACQJ32X300-20B FAQ
It provides 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. The full stroke is 300mm, but the external adjuster allows the extend stroke to be shortened by up to 20mm, giving a usable extend range of 280-300mm.
The external threaded stop with a lock nut limits how far the rod extends, but it does not change the piston area, so force remains identical to a standard ACQ. The unit relies on a fixed elastomer bumper for deceleration rather than an adjustable air cushion. Note that a plain cylinder does not hold its load on air loss, so an external rod lock is required for fail-safe holding.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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