Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-50B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-50B 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 ACQJ40X150-50B
The ACQJ40X150-50B is a double-acting JIS compact cylinder with a 150mm full stroke and a male-thread piston rod end (M14x1.5) for direct load coupling. An external M12x1.25 threaded stop and lock nut limits the extend end position, yielding a usable extend range of 100-150mm. The retract stroke remains completely unaffected. This unit is a long-stroke made-to-order variant, as the 150mm travel exceeds the 100mm standard maximum for this 40mm bore.
Because the internal piston area is unchanged, the output force is identical to a standard ACQ of the same bore: 628.3N push and 527.8N pull at 0.5MPa. The body features fixed NBR elastomer bumpers at both ends for end-of-travel deceleration rather than adjustable air cushions. Although this specific SKU ships without a magnet, the cylinder body retains magnetic-switch grooves for adding reed or solid-state sensors if needed later.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-50B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-50B |
|---|---|
| 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 ACQJ40X150-50B
| 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 ACQJ40X150-50B Is Used
Machining Fixture Clamping
Dial in the exact clamp position on a CNC fixture without machining new spacers, shortening the extend stroke up to 50mm to clear varying raw part heights.
Product Changeover Stops
Rapidly reposition the end-of-travel stop on a packaging line conveyor when switching carton sizes, using the external lock nut to set the 100-150mm travel limit.
Prototype Press Testing
Safely trial different end positions on a small pneumatic press, adjusting the extend stroke mechanically to test material deflection before finalizing the design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X150-50B the Right Cylinder?
Selecting this 40mm bore provides 879.6N push force at 0.7MPa. Stepping down to a 32mm bore yields 562.9N push @0.5MPa, while moving up to a 50mm bore provides 981.8N push @0.5MPa. If your application never requires on-the-fly end-position tuning, a fixed-stroke ACQ cylinder is sufficient. When ordering, confirm the 40mm bore, 150mm full stroke, 50mm adjuster window, the male rod thread (-B), and whether a magnet (-S) is required.
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 ACQJ40X150-50B FAQ
This 40mm bore cylinder has a 150mm full stroke with a 50mm adjustable window, giving a usable extend range of 100-150mm. Force is identical to a standard ACQ: 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. The port size is PT1/8.
An external M12x1.25 threaded stop with a lock nut mechanically limits the extend stroke; it changes stroke length only, not the piston area, so force remains unchanged. The cylinder uses fixed NBR elastomer bumpers at both ends for deceleration, not adjustable air cushions. It will not hold a load on air loss, so an external rod lock or pilot-operated check valve is recommended for fail-safe holding.
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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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