Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20SB 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 ACQJ40X150-20SB
The ACQJ40X150-20SB is a double-acting JIS compact cylinder with a 150mm full stroke and a 20mm external adjustment window. An external threaded stop with a lock nut restricts the extend end position, allowing you to fine-tune the usable extend range from 130mm up to 150mm directly on the machine. The retract stroke remains completely unaffected.
Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore, delivering 628.3N push at 0.5MPa. This made-to-order long-stroke variant exceeds the 100mm standard maximum for bore 40. It includes a built-in piston magnet for position sensing and a male M14x1.5 piston rod end that couples directly to your load.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20SB |
|---|---|
| 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 ACQJ40X150-20SB
| 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 ACQJ40X150-20SB Is Used
Multi-Fixture Machining
Ideal for machining centers running mixed part families, allowing operators to dial in the exact 130-150mm extend stop for each fixture setup without swapping hardware.
Product Changeover Stops
Perfect for conveyor diverter arms where package sizes vary, letting technicians quickly reposition the extend endpoint to match new carton dimensions on the fly.
Packaging Plunger Setup
Useful on packaging equipment during format changes, providing a precise mechanical stop to test and set the optimal sealing or pressing depth before final locking.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-20SB the Right Cylinder?
When sizing this actuator, consider the adjacent bore options: stepping down to a 32mm bore yields 402.1N push at 0.5MPa, while stepping up to a 50mm bore provides 981.8N. If your extend endpoint never varies, a fixed-stroke ACQ cylinder is sufficient and more economical. To order this adjustable version correctly, confirm the 40mm bore, 150mm full stroke, 20mm window, the S magnet option, and the B male rod thread.
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 ACQJ40X150-20SB FAQ
The usable extend range is 130-150mm (150mm full stroke minus up to 20mm). Force is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, with a maximum push of 128kgf at 1.0MPa. The adjuster changes stroke length only.
An external M12x1.25 threaded stop with a lock nut limits the extend stroke, while fixed NBR elastomer bumpers decelerate the piston at each end. A plain ACQ-type does not hold its load on air loss; the rod drifts. For a fail-safe hold, add an external rod lock or pilot-operated check valve.
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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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