Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-50B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-50B 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 ACQJ32X300-50B
The ACQJ32X300-50B is a double-acting JIS compact cylinder featuring a 300mm long-stroke configuration, which exceeds the 100mm standard maximum for this bore size, making it a made-to-order variant. It incorporates an external M12x1.25 threaded stop with a lock nut on the rod-end side, permitting precise on-machine tuning of the extend end position without swapping components. The usable extend range spans 250mm up to the full 300mm, while the retract stroke remains completely unaffected.
Because the adjuster solely limits travel length and leaves piston area untouched, the output force is identical to a standard ACQ of the same bore. You get 402.1N push and 301.6N pull at 0.5MPa, rising to 562.9N push at 0.7MPa, with a maximum push capacity of 82kgf at 1.0MPa. This unit includes the -B option for a male M14x1.5 rod-end thread that couples directly to the load, utilizes a PT1/8 port, and relies on fixed NBR elastomer bumpers at each end for deceleration rather than adjustable air cushions.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-50B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-50B |
|---|---|
| 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 ACQJ32X300-50B
| 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 ACQJ32X300-50B Is Used
Multi-Product Machining Lines
Dial in the extend stop from 250 to 300mm during product changeovers on machining centers, avoiding the need to physically swap out the entire cylinder.
Adjustable Transfer Pushers
Regulate how far parts travel onto downstream conveyors by tweaking the external M12x1.25 adjuster, accommodating varying package lengths on the fly.
Prototyping and R&D Jigs
Establish trial end positions for new test fixtures by limiting the extend stroke, ensuring delicate components are not crushed during process development.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-50B the Right Cylinder?
When sizing this 32mm bore unit, dropping down to a 25mm bore yields 245.4N push at 0.5MPa, whereas stepping up to a 40mm bore provides 628.3N push at 0.5MPa. If your application requires a fixed 300mm extend length with no variation, a standard ACQ cylinder without the external stop is sufficient. To order correctly, verify the 32mm bore, 300mm full stroke, 50mm adjustable window, the -B male M14x1.5 rod thread, and confirm that no internal magnet (-S) is needed since this model ships without one.
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 ACQJ32X300-50B FAQ
It delivers 402.1N push and 301.6N pull at 0.5MPa, 562.9N push at 0.7MPa, and a maximum push of 82kgf at 1.0MPa. The external stop provides a 50mm window, allowing the usable extend range to be adjusted from 250mm up to the full 300mm.
The external threaded stop limits only the extend stroke length, meaning the output force remains identical to a standard ACQ cylinder. Deceleration is handled by fixed NBR elastomer bumpers at each end rather than adjustable air cushions, so for high-energy loads you should add an external shock absorber or slow the approach speed.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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