Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50B
The AirTAC ACQJ40X45-50B is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend stroke from 0 up to 45 mm directly on the machine, while the retract stroke remains unaffected. Because the piston area is unchanged, the force is identical to a standard ACQ of this bore.
Operating pressure ranges from 0.15 to 1.0 MPa, and the fixed elastomer bumper at each end decelerates the rod near stroke extremes. This specific configuration includes a male M14x1.5 piston rod end that couples directly to your load. The body features magnetic-switch grooves, though this unit ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 45 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 ACQJ40X45-50B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 ACQJ40X45-50B Is Used
Machining Fixture Stops
Dial in the exact extend position for varying part dimensions on a milling fixture without machining new stop spacers.
Product Changeover Diverter
Adjust the extend stroke on a packaging line diverter to accommodate different carton widths during rapid product changeover.
Prototype Press End-Position
Safely test and set the precise extend end position on a small assembly press during R&D prototype trials.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-50B the Right Cylinder?
At 0.5 MPa, this 40 mm bore generates 628.3 N of push force and 527.8 N of pull force. If your application requires less force, the next size down (32 mm bore) provides 402.1 N of push, whereas stepping up to a 50 mm bore yields 981.8 N. A fixed-stroke ACQ cylinder is sufficient if your end position never needs adjustment. When ordering, verify the 45 mm full stroke, the 50 mm adjustment window, the male M14x1.5 rod thread, and whether you need the S magnet option for electronic or reed switches.
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 ACQJ40X45-50B FAQ
The usable extend range is 0-45 mm (45 mm full stroke minus the 50 mm window). Force is identical to a standard ACQ: push is 628.3 N and pull is 527.8 N at 0.5 MPa, push is 879.6 N at 0.7 MPa, and max push is 128 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut limits the extend distance without altering the piston area, so force remains unchanged. The cylinder uses fixed elastomer bumpers, not adjustable air cushions. It will not hold a load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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