Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-40SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 35mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke35 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-40SB
The AirTAC ACQJ40X35-40SB is a double-acting JIS compact cylinder featuring an external extend-stroke adjuster. By turning the M12x1.25 threaded stop with its lock nut, you can shorten the forward travel by up to 40 mm. Given the 35 mm full stroke, the usable extend range becomes 0-35 mm. The return stroke remains completely unaffected by this adjustment.
Because the piston dimensions stay the same, output force equals a standard ACQ, delivering 628.3 N push at 0.5 MPa. This variant includes a male M14x1.5 rod end for direct load coupling and a built-in magnet for position sensing. Fixed NBR elastomer bumpers decelerate the piston at both ends, operating reliably at speeds between 30 and 500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-40SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 35 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 ACQJ40X35-40SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 ACQJ40X35-40SB Is Used
Machining Fixture Stops
Fine-tune the clamping extend position on a CNC machining fixture during setup or when swapping raw material blanks without machining new stop parts.
Assembly Line Changeover
Modify product flow diverter arms on a conveyor during a product family changeover, using the external stop to instantly set a new end position.
Carton Sealing Tensioners
Adjust the forward pressing depth of a sealing head on a packaging machine to accommodate various carton sizes while maintaining consistent force.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X35-40SB the Right Cylinder?
If you require less push force, the adjacent 32 mm bore provides 402.1 N at 0.5 MPa, whereas the larger 50 mm bore yields 981.8 N for heavier loads. A fixed-stroke ACQ is sufficient if your end position never needs tweaking. To order this adjustable version correctly, confirm the 40 mm bore, 35 mm full stroke, 40 mm adjuster window, the S magnet option, and the B male 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 ACQJ40X35-40SB FAQ
The usable extend range is 0-35 mm (35 mm full stroke minus the 40 mm window). Force is identical to a standard ACQ: 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.
An external M12x1.25 threaded stop with a lock nut limits the forward stroke, allowing on-machine tuning without changing parts. The piston area is unchanged, so force remains identical to a standard ACQ. Fixed NBR elastomer bumpers decelerate the rod at both ends, while the built-in magnet works with reed or solid-state switches.
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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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Related AirTAC ACQJ Compact Cylinders
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