Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-50B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-50B 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 ACQJ40X100-50B
The AirTAC ACQJ40X100-50B is a double-acting JIS compact cylinder featuring a 100mm full stroke and an external extend stop. A threaded rod-end adjuster with an M12x1.25 thread and lock nut lets you set the usable extend range from 50mm up to 100mm without swapping parts. The retract movement remains at the standard 100mm length. Because the piston area is unchanged, output force equals a standard ACQ, delivering 628.3N push and 527.8N pull at 0.5 MPa.
This variant includes a male M14x1.5 piston rod end for direct load coupling and uses a PT1/8 port. It relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. The body retains magnetic-switch grooves, though this specific unit ships without a magnet. Operating pressure spans 0.15 to 1.0 MPa, with a maximum speed of 500 mm/s.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-50B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-50B |
|---|---|
| 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 ACQJ40X100-50B
| 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 ACQJ40X100-50B Is Used
Machining Fixture Stops
Dial in the exact extend position from 50 to 100mm on CNC machining fixtures to accommodate varying raw material thicknesses without manufacturing new stop collars.
Packaging Line Diverter
Adjust the extend stroke on the fly for conveyor diverters handling different carton widths, ensuring precise sorting without changing out the entire actuator.
Assembly Press Tuning
Fine-tune the pressing depth on electronic assembly presses during prototype runs, testing trial end positions safely before finalizing the mechanical setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X100-50B the Right Cylinder?
Providing 628.3N push force at 0.5 MPa, this 40mm bore sits between the 32mm bore (402.1N push) and the 50mm bore (981.8N push). Choose the 32mm for lighter loads or the 50mm if you need higher thrust. If your end position never varies, a fixed-stroke ACQ cylinder is simpler. When ordering, confirm the 40mm bore, 100mm full stroke, 50mm adjuster window, male M14x1.5 rod thread, and whether you need the -S magnet option for sensor tracking.
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 ACQJ40X100-50B FAQ
Force is identical to a standard ACQ: 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The full stroke is 100mm, but the external adjuster allows you to shorten the extend stroke by up to 50mm, giving a usable extend range of 50-100mm. The retract stroke is unaffected.
An external threaded stop with an M12x1.25 thread and lock nut limits how far the rod extends, allowing on-machine tuning. The adjuster changes stroke length only, not the piston area, so force remains constant. Deceleration is handled by a fixed NBR elastomer bumper at each end, not an adjustable air cushion. Note that a plain ACQ-type cylinder does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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Related AirTAC ACQJ Compact Cylinders
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