Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke50 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50SB
The AirTAC ACQJ40X50-50SB 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 extend travel on the machine across a 0-50 mm usable range without swapping parts. The retract stroke remains completely unaffected.
Because the piston area stays the same, force output is identical to a standard ACQ of this bore. This unit pushes with 628.3 N at 0.5 MPa and pulls with 527.8 N. It includes an NBR elastomer bumper at each end for fixed deceleration and a built-in piston magnet for electronic or reed switches.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 50 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 ACQJ40X50-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 ACQJ40X50-50SB Is Used
Machining Fixture Stops
Dial in the exact extend position for varying raw material thicknesses on a milling machine without machining new spacer blocks.
Assembly Line Changeover
Rapidly reposition a clamping actuator when switching between two different product widths on a conveyor setup.
Carton Sealing Formers
Establish trial end positions for folding flaps on varying carton profiles before locking the adjuster nut in place.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-50SB the Right Cylinder?
This 40 mm bore provides a push force of 628.3 N at 0.5 MPa. Stepping down to a 32 mm bore yields 402.1 N, while sizing up to a 50 mm bore gives 981.8 N. If your process never requires end-position adjustments, a fixed-stroke ACQ cylinder will suffice. When ordering, confirm the 50 mm full stroke, the 50 mm adjuster window, the male M14x1.5 rod thread, and the -S magnet.
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 ACQJ40X50-50SB FAQ
The usable extend range is 0-50 mm. Force is identical to a standard ACQ: push is 628.3 N and pull is 527.8 N at 0.5 MPa, push is 879.6 N at 0.7 MPa, and max push is 128 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut limits the extend travel, leaving the retract stroke alone. Force remains unchanged. Fixed elastomer bumpers handle deceleration, but a plain ACQ-type does not hold loads on air loss; use an external rod lock for fail-safe holding.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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