Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke250 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100SB
The ACQJ40X250-100SB is a double-acting JIS compact cylinder engineered for applications requiring precise extend-position tuning on the machine floor. Featuring a 40mm bore and a 250mm full stroke, this made-to-order long-stroke variant utilizes an external M12x1.25 threaded stop with a lock nut. You can shorten the extend stroke by up to 100mm, yielding a usable forward range of 150-250mm without swapping components. The retract stroke remains completely unaffected.
Because the internal piston area is unchanged, output force matches a standard ACQ exactly, delivering 628.3N push and 527.8N pull at 0.5MPa. This SB configuration includes a male M14x1.5 rod-end thread for direct load coupling and a built-in piston magnet compatible with reed or electronic solid-state switches. Elastomer NBR bumpers fixed at both ends absorb end-of-travel impact, operating efficiently at pressures from 0.15 to 1.0MPa.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 250 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 ACQJ40X250-100SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 ACQJ40X250-100SB Is Used
CNC Fixture Positioning
Dial in exact clamping extension on varying part heights without machining custom spacers, leveraging the 150-250mm forward range.
Packaging Line Changeover
Rapidly adjust the product-diverter stroke during format size shifts, using the external lock nut to secure the new endpoint.
Assembly Press Trial
Establish optimal pressing depth on new automotive sub-assemblies by testing intermediate extend positions before locking the stop.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100SB the Right Cylinder?
When sizing this actuator, consider the 40mm bore against adjacent options: a 32mm bore yields 402.1N push, while a 50mm bore provides 981.8N at 0.5MPa. If your extend endpoint never varies, a fixed-stroke ACQ cylinder is simpler and more cost-effective. For this SB model, confirm the 250mm full stroke, 100mm adjustment window, PT1/8 port, male M14x1.5 rod thread, and the -S magnet requirement during 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 ACQJ40X250-100SB FAQ
It delivers 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa. The usable extend range is 150-250mm, achieved by shortening the 250mm full stroke via the 100mm adjustment window.
The M12x1.25 threaded stop limits forward travel without altering piston area, so force remains identical to a standard ACQ. Fixed NBR bumpers decelerate the rod at travel ends, but a plain cylinder does not hold loads on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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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