Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20B 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 ACQJ32X250-20B
The AirTAC ACQJ32X250-20B is a double-acting, single-rod JIS compact cylinder built for applications requiring exact extend-position tuning. It features an external M12x1.25 threaded stop with a lock nut on the rod-end side, allowing you to shorten the extend stroke by up to 20 mm. This yields a usable extend range of 230 to 250 mm, while the retract stroke remains completely unaffected. Because the piston area is unchanged, force output is identical to a standard ACQ of the same bore. This specific configuration is a long-stroke variant, as the 250 mm stroke exceeds the 100 mm standard maximum for a 32 mm bore.
This unit includes the -B male piston rod end (M14x1.5) for direct load coupling and uses a PT1/8 port. It operates between 0.15 and 1.0 MPa, reaching a maximum push force of 82 kgf at 1.0 MPa. The body incorporates fixed elastomer bumpers at both ends for end-of-stroke deceleration and includes magnetic-switch grooves, though this model ships without a magnet. For high-energy cycles, consider adding an external shock absorber or slowing the approach speed.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20B |
|---|---|
| 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 ACQJ32X250-20B
| 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 ACQJ32X250-20B Is Used
Fixture Setup Tuning
Dial in exact extend stops from 230 to 250 mm during initial fixture setup without machining new spacers or swapping cylinders.
Product Changeover Stops
Quickly modify the extend end position for varying product lengths on a packaging line by turning the external M12x1.25 adjuster.
Trial End Positions
Test different extend end positions on lab equipment to find the optimal cycle distance before finalizing your machine design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20B the Right Cylinder?
Choosing this 32 mm bore provides a push force of 402.1 N and a pull force of 301.6 N at 0.5 MPa. If your application requires less force, dropping down to a 25 mm bore yields 245.4 N push, whereas stepping up to a 40 mm bore provides 628.3 N push. If on-the-fly stroke adjustment is unnecessary, a fixed-stroke ACQ cylinder will suffice. When ordering, confirm the 32 mm bore, 250 mm full stroke, 20 mm adjustable window, and the male M14x1.5 rod thread. Note that a plain ACQ-type cylinder will not hold its load on 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 ACQJ32X250-20B FAQ
The push force is 402.1 N and pull is 301.6 N at 0.5 MPa, with a push of 562.9 N at 0.7 MPa and a maximum push of 82 kgf at 1.0 MPa. The full stroke is 250 mm, but the external stop allows you to shorten the extend stroke by up to 20 mm, giving a usable extend range of 230 to 250 mm.
The external threaded stop limits only the extend stroke length; it does not change the piston area, so the force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers at both ends rather than adjustable air cushions. The body has sensor grooves, but this specific model ships without a magnet.
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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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