Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X50-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X50-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke50 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X50-20SB
The AirTAC ACQJ32X50-20SB is a double-acting JIS compact cylinder with a 32mm bore and 50mm full stroke. An external M12x1.25 threaded stop and lock nut restricts forward travel, providing a usable extend range of 30 to 50mm. The return stroke remains completely unaffected by this adjustment. Because the piston area stays constant, output force matches a standard ACQ exactly, yielding 402.1N push and 301.6N pull at 0.5MPa.
This unit includes a male M14x1.5 piston rod end for direct load coupling and a built-in magnet (-S) for position sensing. It operates at speeds from 30 to 500mm/s and relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X50-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X50-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 50 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 ACQJ32X50-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×50 | 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 ACQJ32X50-20SB Is Used
Product Changeover Stops
Quickly alter the extend endpoint within the 30-50mm window on a machining fixture when switching between part families, avoiding parts replacement.
Variable Carton Pushing
Fine-tune the forward travel of a packaging pusher on the machine to handle different box sizes without repositioning the cylinder mounting.
Prototype Trial Positions
Dial in the exact extend end position during equipment R&D to test sensor alignment and clamping pressure before locking the nut.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X50-20SB the Right Cylinder?
Choosing this 32mm bore provides 402.1N push force at 0.5MPa. If your application requires less force, stepping down to a 25mm bore yields 245.4N push, while moving up to a 40mm bore offers 628.3N. A fixed-stroke ACQ is sufficient if your end position never varies. When ordering, verify the 50mm full stroke, 20mm adjuster window, -S magnet, -B male rod thread, and PT1/8 port.
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 ACQJ32X50-20SB FAQ
The usable extend range is 30-50mm (50mm full stroke minus the 20mm window). Force is identical to a standard ACQ: 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 retract stroke remains 50mm.
The M12x1.25 external threaded stop limits forward travel only; it changes stroke length but not force. The cylinder uses fixed NBR elastomer bumpers, not adjustable air cushions. A plain ACQ-type does not hold its load on air loss, so add an external rod lock or pilot-operated check valve for fail-safe holding.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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