Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20 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 ACQJ40X100-20
The AirTAC ACQJ40X100-20 is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 80 mm up to the full 100 mm stroke directly on your equipment without swapping parts. The retract stroke remains completely unaffected by this mechanism.
Because the adjuster only shortens travel and leaves piston area untouched, output force stays identical to a standard ACQ of the same bore. The 40 mm bore delivers 628.3 N push and 527.8 N pull at 0.5 MPa, operating through a PT1/8 port. This unit incorporates fixed NBR elastomer bumpers at both ends and uses a 16 mm rod with an M8x1.25 female thread.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20 |
|---|---|
| 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 ACQJ40X100-20
| 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 ACQJ40X100-20 Is Used
Machining Fixture Stops
Dial in the extend stroke from 80 to 100 mm on a CNC machining fixture to accommodate varying raw casting lengths without fabricating custom spacers.
Carton Changeover Diverters
Adjust the extend end position on a packaging line diverter during product size changeovers, ensuring precise mechanical stops for different carton widths.
Assembly Press Trial Positions
Set trial end positions on an assembly press to test insertion depths, relying on the external M12x1.25 adjuster thread to safely limit the maximum extend travel.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-20 the Right Cylinder?
Choosing this 40 mm bore provides 628.3 N push at 0.5 MPa, sitting between the 32 mm bore (402.1 N push) and the 50 mm bore (981.8 N push). If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder will achieve the same force profile. When ordering this adjustable variant, verify the 100 mm full stroke, the 20 mm adjustment window, the female M8x1.25 rod end, and whether you need the -S magnet option for position sensing.
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 ACQJ40X100-20 FAQ
The usable extend range is 80-100 mm (a 100 mm full stroke shortened by up to a 20 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 threaded stop with a lock nut limits the extend travel without altering piston area, so force remains unchanged. The cylinder uses fixed NBR elastomer bumpers at both ends rather than adjustable air cushions. While the body features sensor grooves, this specific model ships without a magnet, so add the -S option if you require reed or solid-state switch functionality.
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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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