Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke250 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75SB
The ACQJ32X250-75SB is a double-acting, single-rod JIS compact cylinder built for applications requiring adjustable extend end positions. It features a 32 mm bore and a 250 mm full stroke. Because this stroke length exceeds the standard 100 mm maximum for this bore size, it is manufactured as a long-stroke, made-to-order variant within the 100-300 mm range. An external threaded stop with a lock nut allows you to fine-tune the extend stroke on the machine without swapping components. The usable extend range spans 175 mm up to the full 250 mm, while the retract stroke remains completely unaffected.
Force output is identical to a standard ACQ cylinder of the same bore, as the adjuster only alters travel length and not piston area. At 0.5 MPa, it delivers 402.1 N of push force and 301.6 N of pull force. The unit includes a male M14x1.5 piston rod end for direct load coupling and a built-in piston magnet (-S) for position sensing. Deceleration is handled by a fixed NBR elastomer bumper at each end, and the external adjuster utilizes an M12x1.25 thread.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 250 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 ACQJ32X250-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 ACQJ32X250-75SB Is Used
Product Changeover Stops
Dial in the extend position from 175 to 250 mm on packaging lines when switching between different carton sizes, avoiding the need to physically swap out cylinder hardware.
Trial End Positions
Iteratively test and set the exact clamping endpoint on a new machining fixture by turning the external M12x1.25 stopper nut until the desired contact pressure is achieved.
Varying Assembly Fixtures
Accommodate multiple part heights on a single automated assembly station by adjusting the extend stroke outward as needed, while relying on the fixed NBR bumper for end-of-travel deceleration.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75SB the Right Cylinder?
When sizing this actuator, consider both the force and the stroke adjustability. If 402.1 N of push at 0.5 MPa is excessive, stepping down to a 25 mm bore yields 245.4 N push force. Conversely, if your application requires more power, moving up to a 40 mm bore provides 628.3 N push. A standard fixed-stroke ACQ cylinder is sufficient if your end position never varies and on-machine adjustment is unnecessary. To order this exact adjustable model correctly, confirm the 32 mm bore, 250 mm full stroke, 75 mm adjustment window, the -S magnet option, and the -B male rod thread. Note that a plain compact cylinder does not hold its load upon 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 ACQJ32X250-75SB FAQ
At 0.5 MPa, the push force is 402.1 N and the pull force is 301.6 N. At 0.7 MPa, the push force is 562.9 N, with a maximum push of 82 kgf at 1.0 MPa. The 75 mm adjustment window allows the extend stroke to be shortened from 250 mm down to 175 mm. The retract stroke remains unaffected.
The external threaded stop only limits how far the rod extends; it does not alter the piston area, so force remains identical to a standard ACQ of the same bore. The unit uses fixed elastomer bumpers for deceleration rather than adjustable air cushions. The included -S magnet works with both reed and electronic solid-state switches for position detection.
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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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