Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke75 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30S
The AirTAC ACQJ40X75-30S is a double-acting JIS compact cylinder with a 40mm bore and 75mm full stroke. An external M12x1.25 threaded stop and lock nut restricts the extend end position, providing a usable forward range of 45 to 75mm. The return stroke remains at the full 75mm and is not altered by the adjuster.
Because the piston area stays constant, output force is identical to a standard ACQ of this size, yielding 628.3N push and 527.8N pull at 0.5MPa. The unit integrates a piston magnet for reed or solid-state sensors and uses fixed NBR elastomer bumpers at both ends for end-of-travel deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 75 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 ACQJ40X75-30S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 ACQJ40X75-30S Is Used
Fixture Changeover
Dial in the extend stop from 45 to 75mm during CNC fixture swaps without machining new spacers or swapping cylinders.
Carton Flap Folding
Set precise folding arm end positions for varying box heights, relying on the 628.3N push force to crease heavy corrugated board.
Press Sub-assembly
Establish trial pressing depths on new product lines, using the fixed NBR bumper to absorb the 879.6N push force at 0.7MPa.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-30S the Right Cylinder?
Providing 628.3N push at 0.5MPa, this 40mm bore sits between the 32mm (402.1N push) and 50mm (981.8N push) sizes. If your forward travel never varies, a fixed-stroke ACQ40X75 is simpler; choose this ACQJ version when setups require on-machine end-position tuning. Confirm the 75mm full stroke, 30mm adjuster window, S magnet option, and default female M8x1.25 rod thread when ordering.
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 ACQJ40X75-30S FAQ
The usable extend range is 45-75mm (75mm full stroke minus the 30mm window). Force is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128 kgf at 1.0MPa.
The external M12x1.25 threaded stop with lock nut mechanically limits how far the rod extends, shortening the forward stroke only. It does not alter piston area, so force remains unchanged. The retract stroke is unaffected, and fixed elastomer bumpers absorb end impacts.
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 ACQJ40X75-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.