Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-50SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-50SB
The AirTAC ACQJ40X300-50SB is a double-acting JIS compact cylinder engineered as a long-stroke, made-to-order variant with an adjustable extend end position. It features a 40mm bore and a 300mm full stroke. An external threaded stop with a lock nut permits on-machine extend stroke tuning, yielding a usable forward range of 250 to 300mm. The retract distance remains completely unaffected by this mechanism.
Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore, delivering 628.3N push at 0.5MPa. The unit incorporates a male M14x1.5 rod end coupling directly to your load, a built-in magnet for electronic or reed switches, and fixed NBR elastomer bumpers at each end. Operating pressure spans 0.15 to 1.0MPa.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-50SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 ACQJ40X300-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ40X300-50SB Is Used
Long-Reach Press Setup
Dial in the exact 250-300mm extend end position for a press fixture without machining new spacers during product changeovers.
Extended Transfer Diverter
Fine-tune the actuation reach on a wide conveyor line where the full 300mm stroke needs occasional short-trial limiting.
Automated Assembly Probe
Adjust the forward probe depth on an assembly machine quickly on-site, utilizing the male M14x1.5 thread for direct mounting.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-50SB the Right Cylinder?
This 40mm bore long-stroke variant delivers 628.3N push at 0.5MPa, sitting between the 32mm bore (402.1N push) and the 50mm bore (981.8N push). If your setup requires a fixed forward reach without end-position tuning, a standard ACQ cylinder suffices. When ordering this adjustable unit, verify the 40mm bore, 300mm full stroke, 50mm window, male M14x1.5 rod thread, and the integrated magnet.
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 ACQJ40X300-50SB FAQ
It provides 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The full forward stroke is 300mm, but the external M12x1.25 adjuster allows you to shorten the extend range to anywhere between 250 and 300mm.
The external threaded stop alters only the extend distance, meaning the output force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers rather than adjustable air cushions. Note that a plain ACQ-type does not hold its load on air loss; for a fail-safe hold, utilize an external rod lock or pilot-operated check valve.
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Genuine AirTAC parts produced by AirTAC factory.
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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