Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 15mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke15 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20
The AirTAC ACQJ40X15-20 is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. With a 15mm full stroke and a 20mm adjustment window, you can fine-tune the usable extend range from 0 to 15mm directly on your machinery. The retract stroke remains completely unaffected by this mechanism.
Because the piston area stays constant, output force matches a standard ACQ exactly, delivering 628.3N push and 527.8N pull at 0.5MPa. The 40mm bore uses a PT1/8 port and a 16mm rod. Deceleration relies on fixed NBR elastomer bumpers at both ends rather than adjustable air cushions, and the body features integrated sensor grooves for adding switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 15 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 ACQJ40X15-20
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 ACQJ40X15-20 Is Used
Machine Tending Setup
Dial in the exact extend distance from 0 to 15mm during initial machine commissioning without machining custom spacer blocks.
Product Changeover Stops
Quickly alter the extend endpoint on a packaging line when switching between different product widths or fixture heights.
Assembly Press Trial
Test varying insertion depths on an assembly station by turning the external M12x1.25 adjuster to find the optimal end position.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X15-20 the Right Cylinder?
When sizing this actuator, note the 40mm bore yields 628.3N push at 0.5MPa, whereas stepping down to a 32mm bore provides 402.1N, and moving up to a 50mm bore offers 981.8N. If your equipment never requires end-position tuning, a fixed-stroke ACQ cylinder provides the exact same power in a simpler package. To order this adjustable variant correctly, confirm the 40mm bore, 15mm base stroke, 20mm window, female M8x1.25 rod thread, and whether you need the S magnet option for position 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 ACQJ40X15-20 FAQ
This 40mm bore cylinder has a 15mm full stroke with a 20mm adjustment window, giving a usable extend range of 0-15mm. 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.
An external threaded stop with a lock nut limits the extend length without changing the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected, and deceleration is handled by fixed NBR elastomer bumpers rather than adjustable air cushions.
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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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