Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30S 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 ACQJ40X175-30S
The AirTAC ACQJ40X175-30S is a double-acting, single-rod JIS compact cylinder built for made-to-order long-stroke applications. It features a 40mm bore and a 175mm full stroke, exceeding the standard 100mm maximum for this bore size. An external threaded stop with a lock nut limits the EXTEND end position, giving a usable extend range of 145-175mm. The RETRACT stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, the 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 includes a fixed elastomer NBR bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. Equipped with a -S magnet, the cylinder operates reliably with both reed and electronic solid-state switches in its integrated mounting grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30S |
|---|---|
| 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 ACQJ40X175-30S
| 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 ACQJ40X175-30S Is Used
CNC Fixture Positioning
Dial in the exact clamping extension on a CNC machining center during part-changeover without machining new stop spacers.
Package Diverter Arms
Set precise sorting positions on packaging lines to handle varying carton widths on the fly.
Assembly Press Stroke
Establish trial end positions for pressing bearings on automated assembly equipment before finalizing the mechanical stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30S the Right Cylinder?
When sizing this unit, consider the neighbouring bores: a 32mm bore yields 402.1N push at 0.5 MPa, while a 50mm bore provides 981.8N push. If your 145-175mm extend requirement is fixed and never varies, a standard non-adjustable ACQ cylinder of the same stroke is sufficient. To order correctly, confirm the 40mm bore, 175mm full stroke, 30mm adjust window, the -S magnet option, and the default female M8x1.25 rod-end thread. Note that a plain ACQ body does not hold its load on air loss; for fail-safe holding, specify an external rod lock or pilot-operated check valve.
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 ACQJ40X175-30S FAQ
This long-stroke cylinder has a 40mm bore and 175mm full stroke. The -30 window gives a usable extend range of 145-175mm. 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.
An external M12x1.25 threaded stop with a lock nut limits the extend stroke without altering the piston area, so force is unchanged. The retract stroke is unaffected. Fixed NBR bumpers decelerate the load at both ends, and the -S magnet works with reed or electronic solid-state switches.
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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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