Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-30SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-30SB 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 ACQJ40X100-30SB
The AirTAC ACQJ40X100-30SB is a double-acting JIS compact cylinder featuring an external extend-stop mechanism. A threaded adjuster with an M12x1.25 lock nut lets you dial the forward stroke down by 30 mm, yielding a usable extension span of 70 to 100 mm. The return stroke remains fixed at its full length. Because the piston diameter is unaltered, output force matches a standard ACQ exactly, delivering 628.3 N push and 527.8 N pull at 0.5 MPa.
This variant includes a built-in piston magnet (-S) for position sensing and a male M14x1.5 rod end (-B) for direct load coupling. It uses a PT1/8 port and a 16 mm rod. Deceleration relies on fixed NBR elastomer bumpers at both ends rather than adjustable air cushions. The compact C-clip body design saves space while providing magnetic-switch grooves compatible with reed or solid-state sensors.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-30SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-30SB |
|---|---|
| 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 ACQJ40X100-30SB
| 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 ACQJ40X100-30SB Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC fixture during tooling setup, allowing 70 to 100 mm of extension without machining new spacer blocks.
Packaging Changeover
Rapidly reposition product pushers on a packaging line to accommodate different carton depths using the external M12x1.25 stopper nut.
Assembly Press Trials
Test varying insertion depths for press-fit pins on an assembly station, fine-tuning the 40 mm bore stroke precisely before finalizing the mechanical stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-30SB the Right Cylinder?
When sizing this 40 mm bore actuator, verify the 628.3 N push force at 0.5 MPa is sufficient; stepping down to a 32 mm bore drops push to 402.1 N, while moving up to a 50 mm bore increases it to 981.8 N. If your machinery never requires end-position changes, a fixed-stroke ACQ cylinder provides the same output without the adjuster. For this model, confirm the 100 mm total stroke, the 30 mm adjustment window, the -S magnet, and the -B male rod thread. Note that standard PT1/8 piping is required.
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 ACQJ40X100-30SB FAQ
It provides a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa, and 879.6 N push at 0.7 MPa. The maximum push is 128 kgf at 1.0 MPa. The full stroke is 100 mm, and with the 30 mm adjustment window, the usable extend range is 70 to 100 mm.
An external threaded rod limits the forward extension distance without changing the piston area, so force remains identical to a standard ACQ. The retract stroke is unaffected. Deceleration is handled by fixed elastomer bumpers, not adjustable air cushions, so external shock absorbers are recommended for high-speed loads.
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Related AirTAC ACQJ Compact Cylinders
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