Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 150mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke150 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20B
The AirTAC ACQJ40X150-20B is a double-acting JIS compact cylinder with a male-thread piston rod end (M14x1.5) that couples directly to your load. This long-stroke made-to-order variant provides 150mm of total travel, exceeding the 100mm standard maximum for this bore size. An external threaded stop with a lock nut lets you limit the extend end position on the machine itself. You get a usable extend range of 130-150mm (full stroke minus the 20mm window), while the retract stroke remains completely unaffected.
Because the piston area is unchanged, the force output is identical to a standard ACQ of the same bore. At 0.5 MPa it yields 628.3N push and 527.8N pull, reaching 879.6N push at 0.7 MPa. The body features integrated magnetic-switch grooves, though this specific unit ships without a magnet. Deceleration relies on a fixed NBR elastomer bumper at each end, not an adjustable air cushion. Note that a plain ACQ-type cylinder will not hold a load if air pressure is lost; utilize an external rod lock or pilot-operated check valve for fail-safe positioning.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 150 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 ACQJ40X150-20B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 ACQJ40X150-20B Is Used
Machining Fixture Tuning
Dial in the exact clamping reach on a CNC milling fixture during setup, adjusting the extend stroke from 130 to 150mm without swapping hardware.
Product Changeover Stops
Adapt packaging line end-stops quickly when switching between carton sizes, using the external M12x1.25 adjuster to fine-tune the rod extension.
Assembly Press Trials
Test different engagement depths on an electronic assembly press, relying on the 628.3N push force at 0.5 MPa to seat components accurately.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20B the Right Cylinder?
When sizing this 40mm bore, dropping to a 32mm bore reduces thrust to 402.1N at 0.5 MPa, whereas stepping up to a 50mm bore increases push to 981.8N. If your extend position never varies, a fixed-stroke ACQ cylinder suffices. To order this adjustable unit correctly, confirm the 40mm bore, 150mm full stroke, 20mm window, the male rod thread (-B), and whether you need a magnet (-S).
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 ACQJ40X150-20B FAQ
This cylinder has a 150mm full stroke with a 20mm adjustable window, yielding a usable extend range of 130-150mm. Theoretical force equals a standard ACQ: 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa.
The external M12x1.25 threaded stop with lock nut limits only the extend length, meaning force is unchanged because piston area remains the same. The cylinder uses fixed NBR elastomer bumpers for deceleration, not adjustable air cushions. It will not hold a load on air loss; install an external rod lock 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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Related AirTAC ACQJ Compact Cylinders
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