Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke175 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50B
The AirTAC ACQJ40X175-50B is a double-acting JIS compact cylinder with a male-thread piston rod (M14x1.5) and a 175mm total stroke. An external M12x1.25 threaded stop and lock nut restricts the extend end position, providing a usable extension range of 125 to 175mm. You get on-machine end-position tuning without swapping parts, while the retract stroke remains completely unaffected.
Because the adjuster only limits travel distance without altering piston area, output force stays identical to a standard ACQ bore 40 (628.3N push at 0.5MPa). This long-stroke variant exceeds the 100mm standard maximum for this bore size and ships as a made-to-order unit. It features a fixed NBR elastomer bumper at each end for end-of-stroke deceleration and retains magnetic-switch grooves, though this specific configuration ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 175 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 ACQJ40X175-50B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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 ACQJ40X175-50B Is Used
Machining Fixture Stops
Dial in the exact 125-175mm extend position on a CNC machining fixture to accommodate varying raw casting lengths without fabricating custom spacer blocks.
Assembly Line Changeover
Rapidly reposition the extend end stop during packaging line product changeovers, using the external lock nut to secure the new clamping depth.
Prototype Press Testing
Safely test trial end positions on a prototype assembly press by limiting the extension depth, preventing tool damage during initial setup runs.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50B the Right Cylinder?
Comparing bores, the 32mm version yields 402.1N push while the 50mm bore provides 981.8N at 0.5MPa, making the 40mm bore at 628.3N a solid middle ground. If your application requires a fixed 175mm extension with no on-machine variability, a standard ACQ40X175 cylinder is sufficient. When ordering this adjustable unit, confirm the 40mm bore, 175mm full stroke, 50mm adjustment window, the male M14x1.5 rod thread, and note that no magnet (-S) is included.
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 ACQJ40X175-50B FAQ
The usable extend range is 125-175mm (175mm full stroke minus the 50mm window). Force is identical to a standard ACQ40: 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 external M12x1.25 threaded stop with lock nut limits only the extend stroke; retract travel and piston force are unchanged. The cylinder uses a fixed NBR elastomer bumper for deceleration, not an adjustable air cushion. It will not hold a load on air loss, so an external rod lock is required for fail-safe holding.
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Genuine AirTAC parts produced by AirTAC factory.
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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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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