Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20 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 ACQJ32X250-20
The AirTAC ACQJ32X250-20 is a double-acting, single-rod JIS compact cylinder built for applications requiring precise extend-stroke adjustability. It features an external M12x1.25 threaded stop with a lock nut, allowing users to fine-tune the extend end position directly on the machine. With a 250 mm full stroke and a 20 mm adjustment window, the usable extend range is 230-250 mm. The retract stroke remains completely unaffected. This unit is a long-stroke, made-to-order variant, as 250 mm exceeds the 100 mm standard maximum stroke for a 32 mm bore.
Because the adjuster only limits travel length and not the piston area, the output force is identical to a standard ACQ of the same bore. At 0.5 MPa, the push force is 402.1 N and the pull force is 301.6 N. The cylinder body incorporates magnetic-switch grooves for adding reed or solid-state sensors, though this specific configuration ships without a magnet. Deceleration is handled by a fixed NBR elastomer bumper at each end rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20 |
|---|---|
| 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 ACQJ32X250-20
| 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 ACQJ32X250-20 Is Used
Fixture Position Adjustment
Fine-tune the extend stop within the 230-250 mm range to accommodate varying part dimensions on machining fixtures without fabricating new components.
Product Changeover Stops
Rapidly reposition the end-of-stroke limit on packaging lines during format changes, using the external M12x1.25 adjuster to switch between product sizes.
Trial End Positions
Establish precise clamping or testing endpoints on laboratory and testing machinery by dialing in the exact extend distance during prototype development.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X250-20 the Right Cylinder?
When sizing this model, consider the 402.1 N push force at 0.5 MPa. If your application requires less force, stepping down to a 25 mm bore yields 245.4 N push, while stepping up to a 40 mm bore provides 628.3 N push. If exact on-machine end-position tuning is unnecessary, a fixed-stroke ACQ cylinder will suffice. To order, confirm the 32 mm bore, 250 mm full stroke, 20 mm adjustment window, female rod-end thread (M8x1.25), and whether a magnet (-S) is needed for sensor integration.
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 ACQJ32X250-20 FAQ
The usable extend range is 230-250 mm, achieved by shortening the 250 mm full stroke by up to 20 mm. The force is identical to a standard ACQ 32 mm bore: 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
An external threaded stop with a lock nut limits the extend travel, allowing on-machine adjustments without changing parts. The retract stroke is unaffected. The cylinder uses a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion, so external shock absorbers may be needed for high-energy loads.
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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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