Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30 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 ACQJ40X40-30
The AirTAC ACQJ40X40-30 is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You get a usable extend range of 10 to 40 mm out of the 40 mm full stroke, while the retract stroke remains unaffected. Because the piston area is unchanged, output force is identical to a standard ACQ of this bore.
Operating pressure is 0.15 to 1.0 MPa. The body incorporates sensor grooves for reed or solid-state switches, though this specific unit ships without a magnet. Deceleration relies on a fixed NBR elastomer bumper at each end rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30 |
|---|---|
| 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 ACQJ40X40-30
| 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 ACQJ40X40-30 Is Used
Machining Fixture Clamping
Dial in the exact clamping reach on a CNC fixture during setup, allowing 10 to 40 mm of extension to accommodate varying part thicknesses without swapping hardware.
Product Changeover Stops
Rapidly readjust the extend end position on a packaging line when switching between different carton sizes, using the external M12x1.25 adjuster to fine-tune the stroke.
Trial End Positions
Safely test new end-of-stroke locations on assembly equipment, shortening the extend stroke by up to 30 mm to verify tool clearance before finalizing the motion sequence.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-30 the Right Cylinder?
This 40 mm bore delivers 628.3 N push and 527.8 N pull at 0.5 MPa. Stepping down to a 32 mm bore drops push to 402.1 N, while moving up to a 50 mm bore raises push to 981.8 N. If your machine never needs end-position shifts, a fixed-stroke ACQ suffices. When ordering, confirm the 40 mm bore, 40 mm full stroke, 30 mm adjuster window, female M8x1.25 rod-end thread, and whether you need the S magnet option.
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 ACQJ40X40-30 FAQ
The push force is 628.3 N and pull is 527.8 N at 0.5 MPa, with 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The full stroke is 40 mm with a 30 mm adjustable window, giving a usable extend range of 10 to 40 mm. The retract stroke is unaffected.
An external M12x1.25 threaded stop with a lock nut mechanically 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.
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
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