Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke40 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40
The AirTAC ACQJ40X40-40 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that restricts the extend end position. With a full stroke of 40mm and an adjustment window of 40mm, you can fine-tune the usable extend range from 0mm up to 40mm directly on your machinery without swapping parts. The retract stroke remains completely unaffected. Because the piston area stays the same, output force equals that of a standard ACQ bore 40 (628.3N push at 0.5MPa).
This unit incorporates a fixed elastomer bumper at each end rather than an adjustable air cushion, making it ideal for standard duty cycles. The body retains magnetic-switch grooves, though this specific configuration ships without a magnet. It features a 16mm piston rod, a female M8x1.25 rod-end thread, and PT1/8 ports. Note that a plain compact cylinder will drift if air pressure is lost; utilize an external rod lock for fail-safe load holding.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 40 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 ACQJ40X40-40
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 ACQJ40X40-40 Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC machining fixture. The external stop allows operators to shift the extend endpoint from 0 to 40mm to accommodate varying raw material thicknesses without disassembling the tooling.
Package Diverters
Adjust the stroke of a conveyor sorting diverter on-site. The lock nut and threaded stop let maintenance teams tweak the push distance to handle different carton sizes on the fly.
Sealing Head Positioning
Set precise trial end positions for a packaging sealing head. The adjuster permits fine-tuning the extend distance to ensure the head meets the product correctly before locking down.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40 the Right Cylinder?
When sizing this 40mm bore actuator, consider the neighbouring bores: a 32mm provides 402.1N push at 0.5MPa, while a 50mm yields 981.8N. This ACQJ40X40-40 delivers 628.3N push and 527.8N pull at 0.5MPa, peaking at 128kgf max push at 1.0MPa. If your machine setup never requires altering the extend endpoint, a fixed-stroke standard ACQ cylinder is sufficient. To order correctly, confirm the 40mm bore, 40mm full stroke, 40mm window, female rod thread, and whether you require the S magnet option for sensor feedback.
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 ACQJ40X40-40 FAQ
This 40mm bore cylinder provides 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The full stroke is 40mm with a 40mm adjustment window, meaning the usable extend range is 0-40mm. The retract stroke is unaffected.
The external M12x1.25 threaded stop with a lock nut limits how far the rod extends, changing only the stroke length, not the piston area, so force remains identical to a standard ACQ. Deceleration is handled by a fixed elastomer bumper at each end, not an adjustable air cushion. This model ships without a sensor magnet.
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Covers non-human-caused product damage.
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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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