Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40S 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 ACQJ40X175-40S
The AirTAC ACQJ40X175-40S is a double-acting, single-rod JIS compact cylinder featuring an external threaded stop and lock nut to precisely limit the extend end position. This long-stroke, made-to-order variant provides a usable extend range of 135-175mm (a 40mm adjustment window off the 175mm full stroke), while the retract stroke remains completely unaffected. Operating pressure is 0.15-1.0 MPa.
Because the piston area is unchanged, output force is identical to a standard ACQ of the same bore, delivering 628.3N push and 527.8N pull at 0.5 MPa. The unit incorporates fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration and includes a built-in piston magnet for position sensing. The Ø16mm rod and PT1/8 port ensure robust pneumatic performance.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40S |
|---|---|
| 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 ACQJ40X175-40S
| 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 ACQJ40X175-40S Is Used
Machining Center Changeover
Dial in the extend stop from 135 to 175mm during CNC fixture swaps, allowing rapid product-changeover without machining new custom-length piston rods.
Assembly Press Positioning
Set precise end positions for pressing sub-components on an automated line, tweaking the 40mm window on the machine to test optimal engagement depths.
Variable Format Cartoning
Accommodate different package sizes on a packaging conveyor by externally adjusting the extend stroke limit, avoiding the need to swap out the entire cylinder.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-40S the Right Cylinder?
Selecting this bore gives 628.3N push at 0.5 MPa; sizing down to a 32mm bore yields 402.1N, while stepping up to a 50mm bore provides 981.8N. If the exact 175mm extend length is fixed and never varies, a standard non-adjustable ACQ cylinder suffices. When ordering, confirm the 40mm bore, 175mm full stroke, 40mm window, the -S magnet for electronic or reed switches, and the default female M8x1.25 rod-end 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 ACQJ40X175-40S FAQ
The usable extend range is 135-175mm (175mm full stroke minus a 40mm window). Force is identical to 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 a lock nut limits only the extend stroke length; it does not alter piston area or force. The cylinder uses fixed elastomer bumpers at each end for deceleration rather than adjustable air cushions. Additionally, the -S magnet works with both reed and electronic solid-state switches.
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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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