Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75S 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 ACQJ32X250-75S
The ACQJ32X250-75S is a double-acting JIS compact cylinder featuring a 250mm long-stroke design that exceeds the standard 100mm maximum for this bore, making it a made-to-order variant. It includes a built-in piston magnet (-S) compatible with both reed and solid-state electronic switches.
An external M12x1.25 threaded stop and lock nut lets you fine-tune the extend end position on the machine without swapping parts. You can shorten the outward stroke by up to 75mm, yielding a usable extend range of 175-250mm. The retract stroke remains completely unaffected. Because the piston area stays the same, output force is identical to a standard ACQ, delivering 402.1N push at 0.5MPa. The unit relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75S |
|---|---|
| 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 ACQJ32X250-75S
| 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 ACQJ32X250-75S Is Used
CNC Tooling Changeover
Dial in the exact extend stop from 175 to 250mm when swapping machining fixtures on a CNC mill, avoiding the need to manufacture custom spacer blocks.
Packaging Format Adjustments
Accommodate varying carton sizes on a packaging line by turning the external M12x1.25 adjuster to set the precise push distance for each product run.
Assembly Press Trial Stops
Safely test different end positions for pressing bearings on an assembly line by limiting the extend stroke, preventing damage during initial setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-75S the Right Cylinder?
When sizing this actuator, the 32mm bore yields 402.1N push and 301.6N pull at 0.5MPa. If you need less force, stepping down to a 25mm bore provides 245.4N push, while moving up to a 40mm bore offers 628.3N push. Choose this adjustable model only if your process requires frequent extend-position changes; otherwise, a fixed-stroke ACQ is simpler. Confirm your ordering essentials: 32mm bore, 250mm full stroke, 75mm window, S magnet, and the default female M8x1.25 rod-end thread. Note that at high speeds, the fixed bumper may require an external shock absorber.
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 ACQJ32X250-75S FAQ
This 32mm bore cylinder delivers a push force of 402.1N and a pull force of 301.6N at 0.5MPa, with a push of 562.9N at 0.7MPa, and a maximum push of 82kgf at 1.0MPa. The full stroke is 250mm, but the external adjuster allows you to shorten the extend stroke by up to 75mm, giving a usable extend range of 175-250mm.
No, the adjuster only limits how far the rod extends by acting as an external mechanical stop; the piston area is unchanged, so force remains identical to a standard ACQ. The cylinder uses fixed NBR elastomer bumpers at both ends for deceleration rather than adjustable air cushions. Also, the -S magnet works with both reed and electronic solid-state switches.
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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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