Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40B 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 ACQJ32X250-40B
The ACQJ32X250-40B is a double-acting JIS compact cylinder featuring a 250mm long-stroke design, which exceeds the 100mm standard maximum for this 32mm bore, making it a made-to-order variant. An external M12x1.25 threaded stop with a lock nut restricts the forward extend position, providing a usable extend range of 210-250mm. The return retract stroke remains completely unaffected by this mechanism.
Because the internal piston area stays constant, output force remains identical to a standard ACQ equivalent, yielding 402.1N push and 301.6N pull at 0.5MPa. The unit includes a male M14x1.5 rod-end thread for direct load coupling, fixed NBR elastomer bumpers for end-of-stroke deceleration, and pre-machined sensor grooves. Note that this specific configuration ships without a magnet (-S omitted).
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40B |
|---|---|
| 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 ACQJ32X250-40B
| 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 ACQJ32X250-40B Is Used
Machining Fixture Clamping
Dial in the exact clamping extension on a CNC fixture during new product changeovers without machining custom spacer rings.
Packaging Line Diverters
Adjust the pusher rod end position on the fly to accommodate varying carton widths on a packaging conveyor system.
Assembly Press Positioning
Set precise trial end stops for pressing bearings into housings, allowing rapid tweaking of insertion depth on the factory floor.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-40B the Right Cylinder?
When sizing this unit, consider the adjacent bore options: a 25mm bore yields 245.4N push at 0.5MPa, while a 40mm bore provides 628.3N. This 32mm model delivers 402.1N push and a maximum 82kgf at 1.0MPa, hitting a solid middle ground for medium-duty tasks. If your equipment never requires end-position variance, a fixed-stroke ACQ cylinder will suffice. To order, confirm the 32mm bore, 250mm full stroke, 40mm window, male rod thread (-B), and whether you need the magnet option.
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 ACQJ32X250-40B FAQ
This cylinder provides 402.1N push and 301.6N pull at 0.5MPa, 562.9N push at 0.7MPa, and a maximum push force of 82kgf at 1.0MPa. The full stroke is 250mm, but the external adjuster allows you to shorten the extend stroke by up to 40mm, giving a usable extend range of 210-250mm.
The external M12x1.25 threaded stop with lock nut physically limits how far the rod extends, changing only the stroke length while keeping force identical to a standard ACQ. Deceleration is handled by fixed NBR elastomer bumpers, not adjustable air cushions. The body has sensor grooves, but this model ships without a magnet, so you must add the -S option if you need reed or solid-state switch detection.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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