Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50SB 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 ACQJ40X175-50SB
The ACQJ40X175-50SB is a double-acting JIS compact cylinder featuring a 175mm stroke and an external extend stop. A threaded adjuster with a lock nut allows you to fine-tune the extend end position on the machine, yielding a usable extend range of 125 to 175mm. The retract stroke remains completely unaffected. Because the piston area is unchanged, output force is identical to a standard ACQ of the same bore.
This long-stroke made-to-order variant exceeds the standard 100mm maximum for a 40mm bore. It features a 16mm piston rod, PT1/8 porting, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. The included -S magnet enables position detection using either reed or electronic solid-state switches, while the -B male rod thread (M14x1.5) couples directly to your load.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50SB |
|---|---|
| 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 ACQJ40X175-50SB
| 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 ACQJ40X175-50SB Is Used
Machining Fixture Clamps
Dial in the exact clamping extension on a CNC machining center to accommodate raw material blanks of varying thicknesses without swapping out cylinder hardware.
Product Changeover Stops
Adjust the extend end position on a packaging line conveyor when switching between different carton lengths, enabling rapid format changeovers and minimizing downtime.
Prototype Tooling Validation
Test multiple end-of-stroke positions on a new assembly press to determine the optimal engagement depth for delicate components before finalizing the mechanical design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-50SB the Right Cylinder?
Selecting this 40mm bore actuator provides 628.3N push and 527.8N pull at 0.5MPa. If your application requires less force, stepping down to a 32mm bore yields 402.1N push, whereas scaling up to a 50mm bore provides 981.8N push. A fixed-stroke ACQ is sufficient if your extend position never requires adjustment. When ordering, confirm the 40mm bore, 175mm full stroke, 50mm adjuster window, the -S magnet, and the -B male rod 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 ACQJ40X175-50SB FAQ
This 40mm bore cylinder 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 full stroke is 175mm with a 50mm adjustment window, resulting in a usable extend range of 125-175mm.
An external M12x1.25 threaded stop with a lock nut limits the extend length, changing only the stroke distance and not the piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers rather than adjustable air cushions. Note that a plain compact cylinder does not hold its load on air loss; use an external rod lock for fail-safe holding.
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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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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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