Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke300 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10SB
The AirTAC ACQJ40X300-10SB is a double-acting, single-rod JIS compact cylinder built for adjustable extend positioning. It features a 40mm bore and a 300mm full stroke, classifying it as a long-stroke made-to-order variant since it exceeds the 100mm standard maximum for this bore size. An external M12x1.25 threaded stop with a lock nut lets you fine-tune the extend end position. The usable extend range spans 290mm to 300mm, while the retract stroke remains completely unaffected.
Because the internal piston area stays constant, output force is identical to a standard ACQ of the same bore. You get 628.3N push and 527.8N pull at 0.5MPa. The -S option includes a built-in piston magnet compatible with both reed and solid-state electronic switches. The -B option provides a male M14x1.5 rod-end thread coupling directly to your load. Deceleration relies on a fixed NBR elastomer bumper at each end rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 ACQJ40X300-10SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ40X300-10SB Is Used
Machining Fixture Stops
Dial in the exact 290-300mm extend position during CNC setup or tooling changes without machining new hard stops.
Carton Changeover
Adapt sealing or folding head end positions on the fly for varying package sizes without swapping pneumatic components.
Assembly Press Trial
Safely test and iterate extend end positions on a press station before locking the lock nut for production runs.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X300-10SB the Right Cylinder?
This 40mm bore delivers 628.3N push at 0.5MPa. If you need less force, the 32mm bore offers 402.1N push, or step up to the 50mm bore for 981.8N. A fixed-stroke standard ACQ is sufficient if your end position never requires tweaking. Confirm ordering essentials: 40mm bore, 300mm full stroke, 10mm adjust window, -S magnet, and -B male rod thread. Note that a plain ACQ-type will not hold a load on air loss; specify an external rod lock or pilot-operated check valve for fail-safe holding.
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 ACQJ40X300-10SB FAQ
The usable extend range is 290-300mm (300mm full stroke minus up to 10mm). Force is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and 128kgf max push at 1.0MPa. The piston rod is Ø16mm, port is PT1/8, and the adjuster thread is M12x1.25.
No. The external threaded stop limits extend stroke length only, leaving piston area and force unchanged. The retract stroke remains unaffected. The cylinder uses a fixed NBR elastomer bumper for deceleration at stroke ends, so for high-speed approaches consider an external shock absorber.
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Related AirTAC ACQJ Compact Cylinders
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