Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75B 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 ACQJ40X175-75B
The AirTAC ACQJ40X175-75B is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. The full stroke is 175 mm, and the -75 mm window allows you to fine-tune the usable extend range from 100 mm up to 175 mm directly on the machine. The retract stroke remains unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of the same bore, delivering 628.3 N of push force at 0.5 MPa. This long-stroke made-to-order variant exceeds the 100 mm standard maximum for this bore size, featuring a 16 mm rod and a male M14x1.5 thread on the rod end to couple directly to your load.
This unit ships without a magnet, though the body retains magnetic-switch grooves for adding sensors later if needed. It uses a PT1/8 port and relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and the external adjuster utilizes an M12x1.25 thread. For high-speed or high-energy cycles, consider adding an external shock absorber or slowing the approach, as the fixed bumper only decelerates near the stroke end.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75B |
|---|---|
| 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 ACQJ40X175-75B
| 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 ACQJ40X175-75B Is Used
Machining Fixture Stops
Dial in the exact extend position for varying part dimensions on a machining fixture without machining new stop spacers.
Packaging Changeover
Rapidly adjust the extend stroke depth for different carton sizes during product changeover on a packaging line.
Assembly Press Setup
Establish trial end positions for pressing operations on an assembly line, tuning the 100-175 mm range on the machine.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75B the Right Cylinder?
When sizing this 40 mm bore cylinder, note the push force is 628.3 N at 0.5 MPa and 879.6 N at 0.7 MPa, with a maximum push of 128 kgf at 1.0 MPa. Stepping down to a 32 mm bore yields 402.1 N of push force, while stepping up to a 50 mm bore provides 981.8 N, giving you distinct force tiers for your application. A standard fixed-stroke ACQ cylinder is sufficient if your extend end position never requires adjustment. To order this adjustable variant, confirm the 40 mm bore, the 175 mm full stroke, the 75 mm adjustable window, the male M14x1.5 rod thread, and the lack of a magnet. Keep in mind a plain ACQ-type does not hold its load on air loss or when a valve is centered; the rod drifts, so specify an external rod lock or pilot-operated check valve for fail-safe holding.
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 ACQJ40X175-75B FAQ
The usable extend range is 100-175 mm (a 175 mm full stroke shortened by up to a 75 mm window). The force is identical to a standard ACQ: 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N 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 length only; it does not alter the piston area, so the force remains unchanged. The retract stroke is unaffected. Deceleration is handled by a fixed NBR elastomer bumper at each end, not an adjustable air cushion.
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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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