Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75B 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 ACQJ32X300-75B
The ACQJ32X300-75B is a double-acting, single-rod JIS compact cylinder built for applications requiring variable extend end-positions. It features an external threaded stop with a lock nut on the rod-end side, allowing you to fine-tune the extend stroke directly on the machine without swapping parts. With a full stroke of 300 mm and a 75 mm adjustment window, the usable extend range spans 225 to 300 mm. The retract stroke remains completely unaffected by this adjustment.
This long-stroke, made-to-order variant exceeds the standard 100 mm maximum stroke for a 32 mm bore. Because the piston area is unchanged, the output force is identical to a standard ACQ of this size, delivering 402.1 N of push at 0.5 MPa. It includes a male M14x1.5 rod-end thread for direct load coupling, a fixed NBR elastomer bumper at each end for end-of-stroke deceleration, and a PT1/8 port. Note that this unit ships without a magnet; while the body retains sensor grooves, a separate magnet accessory is required for reed or solid-state switch activation.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75B |
|---|---|
| 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 ACQJ32X300-75B
| 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 ACQJ32X300-75B Is Used
Machining Fixture Stops
Dial in the exact extend position for varying workpiece lengths on a CNC lathe loader without machining custom spacers.
Product Changeover Diverter
Adjust the extend stroke on a packaging line diverter gate on the fly to accommodate different carton widths during format changes.
Long-Reach Press Ejector
Fine-tune the ejection point of parts from a hydraulic press over a 225-300 mm range to test optimal transfer positions.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75B the Right Cylinder?
Choosing this 32 mm bore actuator provides 402.1 N push and 301.6 N pull force at 0.5 MPa. If your setup needs less force, the next size down (25 mm) yields 245.4 N push, whereas stepping up to a 40 mm bore provides 628.3 N push. A fixed-stroke ACQ is sufficient if your end-position never varies. When ordering, confirm the 300 mm full stroke, the 75 mm window, the male M14x1.5 rod thread, and the absence of the -S magnet. For load-holding safety during air loss, pair this cylinder with an external rod lock or pilot-operated check valve, as the standard bumper does not prevent drift.
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 ACQJ32X300-75B FAQ
The output force equals a standard ACQ: 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. The full stroke is 300 mm with a 75 mm adjustable window, yielding a usable extend range of 225-300 mm. The piston rod is 16 mm with a male M14x1.5 thread, an M12x1.25 adjuster thread, and a PT1/8 port.
The external threaded stop limits only the extend stroke length; it does not alter piston area, so force remains identical to a standard ACQ. Deceleration is handled by a fixed NBR elastomer bumper at each end, not an adjustable air cushion. This specific model ships without a -S magnet, though the body retains grooves for mounting reed or solid-state sensors if a magnet is added later.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X300-75B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.