Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50 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 ACQJ40X175-50
The AirTAC ACQJ40X175-50 is a double-acting JIS compact cylinder with a 175mm full stroke and a 50mm external adjustment window. An external M12x1.25 threaded stop and lock nut restrict the forward extend position, yielding a usable extend range of 125mm to 175mm. The retract stroke remains completely unaffected. Because the piston area stays constant, the output force is identical to a standard ACQ of this bore.
This made-to-order long-stroke variant exceeds the 100mm standard maximum for a 40mm bore, extending up to the 300mm long-stroke limit. It delivers 628.3N push and 527.8N pull at 0.5MPa, utilizing a 16mm piston rod with a PT1/8 port. The body features integrated magnetic-switch grooves and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50 |
|---|---|
| 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 ACQJ40X175-50
| 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 ACQJ40X175-50 Is Used
Machining Fixture Clamping
Dial in the exact clamping reach on a CNC milling fixture, allowing quick accommodation for different raw material thicknesses without machining new spacer blocks.
Sorting Diverter Arms
Adjust the actuation endpoint of a conveyor sorting arm to handle varying box dimensions during production changeovers on a packaging line.
Assembly Press Positioning
Set precise trial end positions for pressing bearings into housings, enabling operators to tune the insertion depth on the machine without swapping cylinders.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50 the Right Cylinder?
Selecting this 40mm bore provides 628.3N push at 0.5MPa. Stepping down to a 32mm bore yields 402.1N push, while stepping up to a 50mm bore provides 981.8N push. If exact 175mm travel is always required and setup variance is unnecessary, a fixed-stroke ACQ cylinder suffices. When ordering, confirm the 40mm bore, 175mm full stroke, 50mm window, female M8x1.25 rod-end thread, and note this unit lacks the -S magnet option.
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 ACQJ40X175-50 FAQ
The usable extend range is 125-175mm, created by subtracting up to 50mm from the 175mm full stroke. It delivers 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 retract stroke is unaffected by the adjuster.
An external M12x1.25 threaded stop with a lock nut mechanically limits the forward stroke length, meaning force is identical to a standard ACQ since piston area is unchanged. The cylinder uses fixed NBR bumpers for deceleration and ships without a sensor magnet, though grooves are present. Note that a plain ACQ-type does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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