Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20
The AirTAC ACQJ32X45-20 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend range from 25 mm up to the full 45 mm directly on the equipment, while the retract stroke remains completely unaffected. The adjuster features an M12x1.25 thread.
Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore, delivering 402.1 N push and 301.6 N pull at 0.5 MPa. The unit includes a fixed elastomer bumper at each end for end-of-stroke deceleration and integrated sensor grooves. It operates on filtered 40 um air, utilizing a PT1/8 port and a 16 mm piston rod with a female M8x1.25 end thread.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 45 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 ACQJ32X45-20
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×45 | 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 ACQJ32X45-20 Is Used
Machining Fixture Calibration
Dial in the exact clamping reach on a CNC machining fixture during initial setup, allowing 25 to 45 mm of extension to accommodate varying raw material thicknesses without swapping cylinders.
Packaging Changeover Stops
Adjust the extend end position on a packaging line when transitioning between different carton sizes, using the external stop to rapidly set new folding depths without disassembling the pneumatic assembly.
Assembly Press Trials
Test multiple pressing depths on an automated assembly press by tweaking the lock nut, finding the optimal end position for inserting electronic connectors before finalizing the mechanical cycle.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X45-20 the Right Cylinder?
If your application requires less push force at 0.5 MPa, the adjacent ACQJ25 bore provides 245.4 N push, whereas stepping up to the ACQJ40 bore yields 628.3 N. If the exact 45 mm extend position is permanently fixed and never requires on-machine tweaking, a standard non-adjustable ACQ32 cylinder will suffice. When ordering this adjustable variant, confirm the 32 mm bore, 45 mm full stroke, 20 mm window, female M8x1.25 rod thread, and whether you need the -S magnet option for electronic or reed switch sensing.
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 ACQJ32X45-20 FAQ
The usable extend range is 25-45 mm (a 20 mm window off the 45 mm full stroke). Force is identical to a standard ACQ32: 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
The external M12x1.25 threaded stop and lock nut mechanically limits how far the rod extends, changing only the stroke length, not the piston area, so output force remains unchanged. The cylinder uses fixed elastomer bumpers for deceleration and will not hold a load if air pressure is lost; for fail-safe holding, an external rod lock is required.
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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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