Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke100 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75S
The AirTAC ACQJ40X100-75S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend stroke anywhere from 25 mm up to the full 100 mm directly on the machine. The retract stroke remains completely unaffected by this adjustment. Because the piston area stays the same, the output force is identical to a standard ACQ of this bore.
This 40 mm bore unit delivers 628.3 N push and 527.8 N pull at 0.5 MPa. It features a 16 mm piston rod, a PT1/8 port, and a female M8x1.25 rod-end thread. The external adjuster uses an M12x1.25 thread. Fixed NBR elastomer bumpers handle end-of-stroke deceleration, and the built-in magnet (-S) works with reed or electronic solid-state switches in the standard grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 100 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 ACQJ40X100-75S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 ACQJ40X100-75S Is Used
Machining Fixture Stops
Dial in the extend stop to accommodate varying raw material thicknesses on a milling fixture without machining new spacer blocks.
Assembly Line Changeover
Quickly adjust the extend position during product family changeovers on an automated assembly press to handle different component heights.
Carton Forming Trials
Set trial end positions for folding flaps on varying carton sizes, locking the M12x1.25 adjuster nut once the perfect fold is achieved.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-75S the Right Cylinder?
If you need slightly less force, the 32 mm bore provides 402.1 N push at 0.5 MPa, while stepping up to the 50 mm bore yields 981.8 N push. Choose this 40 mm model when your application requires roughly 628 N of push force and on-machine extend-position tuning within a 25-100 mm range. If your end position never varies, a fixed-stroke ACQ cylinder suffices. When ordering, confirm the 40 mm bore, 100 mm full stroke, 75 mm adjustable window, the -S magnet option, and the default female M8x1.25 rod thread.
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 ACQJ40X100-75S FAQ
It provides 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 usable extend range is 25-100 mm, meaning the 100 mm full stroke can be shortened by up to a 75 mm window.
No, the external M12x1.25 threaded stop changes the extend stroke length only, so the force remains identical to a standard ACQ. The cylinder uses fixed NBR elastomer bumpers for deceleration, not adjustable air cushions, and the -S magnet supports both reed and electronic switches.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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