Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40B 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 ACQJ40X40-40B
The AirTAC ACQJ40X40-40B is a double-acting JIS compact cylinder with a male-thread piston rod (M14x1.5) for direct load coupling. An external M12x1.25 threaded stop and lock nut restricts the extend travel, yielding a usable forward range of 0-40 mm from a 40 mm full stroke. The retract distance remains completely unaffected.
Output force matches a standard ACQ of the same bore because the piston area is unchanged, giving 628.3 N push and 527.8 N pull at 0.5 MPa. The unit uses a PT1/8 port, runs at 30-500 mm/s, and relies on fixed NBR elastomer bumpers at each end rather than adjustable air cushions.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40B |
|---|---|
| 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 ACQJ40X40-40B
| 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 ACQJ40X40-40B Is Used
Product Changeover Stops
Dial in new extend endpoints from 0 to 40 mm instantly when switching between product families on a machining fixture.
Variable Transfer Fingers
Set exact push distances for parts moving down a line, tweaking the 0-40 mm window without swapping cylinder hardware.
Carton Forming Adjustments
Fine-tune the forward folding stroke on packaging equipment to accommodate different carton dimensions on the fly.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X40-40B the Right Cylinder?
If you need less push, the ACQJ32 bore provides 402.1 N at 0.5 MPa, while the ACQJ50 steps up to 981.8 N. A fixed-stroke ACQ40 suffices if your end position never varies. When ordering this version, confirm the 40 mm full stroke, the 40 mm adjuster window, the male rod thread, and note that this specific SKU omits the magnet.
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 ACQJ40X40-40B FAQ
It delivers 628.3 N push and 527.8 N pull at 0.5 MPa, 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 40 mm window, allowing a usable extend range of 0-40 mm.
The external M12x1.25 threaded stop with lock nut limits forward travel without altering piston area, so force remains identical to a standard ACQ. The cylinder uses fixed elastomer bumpers, not adjustable cushions, and does not hold the load on air loss—add an external rod lock for fail-safe positioning.
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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