Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-40B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-40B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-40B
The ACQJ32X300-40B is a double-acting JIS compact cylinder built for applications requiring exact extend positioning without swapping parts. An external M12x1.25 threaded stop and lock nut limits the outward stroke, providing a usable extend range of 260-300mm from the 300mm full stroke. The retract distance remains completely unaffected by this adjustment. As a made-to-order long-stroke variant exceeding the 100mm standard maximum for a 32mm bore, it maintains a highly compact footprint.
Because the internal piston area stays constant, output force is identical to a standard ACQ of this size, yielding 402.1N push and 301.6N pull at 0.5 MPa. This unit features a male M14x1.5 rod-end thread (-B) for direct load coupling, a Ø16mm piston rod, and a PT1/8 port. Deceleration is handled by fixed NBR elastomer bumpers at both ends rather than adjustable air cushions, and the body includes sensor grooves although this specific configuration ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-40B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-40B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 300 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 ACQJ32X300-40B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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 ACQJ32X300-40B Is Used
Variable Length Stops
Ideal for packaging machines running mixed product lengths, allowing operators to dial in the 260-300mm extend position rapidly during format changeovers.
Prototype Positioning
Provides trial end positions on machining fixtures where the exact required extension is unknown, letting technicians test reach without machining new spacers.
Extended Reach Ejection
Suited for long-reach part ejection on automated assembly lines, using the 300mm stroke to clear deep work zones while fine-tuning the drop-off point.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-40B the Right Cylinder?
Selecting this model requires confirming the 32mm bore, 300mm full stroke, and 40mm adjustment window alongside the male rod thread. If your setup never requires end-position tuning, a fixed-stroke ACQ cylinder provides identical output in a simpler package. For sizing context, stepping down to a 25mm bore drops the 0.5 MPa push force to 245.4N, while moving up to a 40mm bore increases it to 628.3N. Remember that a standard compact cylinder does not hold its load pneumatically; if air pressure drops, the rod drifts, so incorporate an external rod lock or pilot-operated check valve for fail-safe positioning.
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 ACQJ32X300-40B FAQ
This 32mm bore cylinder delivers 402.1N push and 301.6N pull at 0.5 MPa, 562.9N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa. The 300mm full stroke can be shortened by up to 40mm via the external stop, creating a usable extend range of 260-300mm.
The external M12x1.25 threaded stop physically blocks the rod from extending fully, shortening the stroke length without altering the piston area, so force remains identical to a standard ACQ. Deceleration relies on fixed NBR elastomer bumpers at both ends, not adjustable air cushions, so external shock absorbers are recommended 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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