Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke75 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-20SB
The AirTAC ACQJ40X75-20SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You get a usable extend range of 55-75 mm out of the 75 mm full stroke, as the 20 mm window allows you to shorten the forward travel. The retract stroke remains completely unaffected.
Because the piston area stays the same, the output force is identical to a standard ACQ of this bore, delivering 628.3 N push and 527.8 N pull at 0.5 MPa. This unit includes a male M14x1.5 rod-end thread for direct load coupling and a built-in piston magnet for electronic or reed switches. It uses a PT1/8 port and fixed elastomer bumpers at both ends.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 75 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 ACQJ40X75-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 ACQJ40X75-20SB Is Used
Modular Fixture Positioning
Dial in the exact clamping reach on machining fixtures when raw part tolerances shift, using the external stop to set the 55-75 mm extend limit without swapping cylinders.
Product Changeover Stops
Adapt conveyor diverter arms rapidly during packaging format changes by turning the lock nut to shorten the forward stroke for different carton sizes.
Prototype End-Point Testing
Safely probe trial end positions on new assembly equipment by starting at a shorter extension and gradually increasing the travel up to the full 75 mm limit.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-20SB the Right Cylinder?
If you need slightly less thrust, the adjacent bore 32 model provides 402.1 N push at 0.5 MPa, whereas stepping up to the bore 50 version yields 981.8 N. A standard fixed-stroke ACQ is sufficient if your end position never varies. To order this adjustable variant correctly, confirm the 40 mm bore, 75 mm full stroke, 20 mm adjust window, the male rod thread (-B), and the magnet (-S).
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 ACQJ40X75-20SB FAQ
It delivers 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. The full stroke is 75 mm with a 20 mm adjustable window, giving a usable extend range of 55-75 mm.
An external M12x1.25 threaded stop with a lock nut mechanically limits the extend distance, meaning the force stays identical to a standard ACQ because the piston area is unchanged. Fixed elastomer bumpers decelerate the load at both ends, and the built-in magnet (-S) works with reed or solid-state switches.
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X75-20SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.