Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 80mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke80 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40SB
The AirTAC ACQJ40X80-40SB is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that limits the rod extension. You can fine-tune the extend end position directly on your machinery without swapping components. This unit provides a usable extend range of 40 to 80 mm, while the retract stroke remains completely unaffected.
Because the piston area stays constant, output force matches a standard ACQ exactly, delivering 628.3 N push and 527.8 N pull at 0.5 MPa. The bore 40 body includes a PT1/8 port, a 16 mm rod, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. The -S option adds a piston magnet compatible with reed or solid-state switches, and the -B option provides a male M14x1.5 rod-end thread for direct load coupling.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 80 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 ACQJ40X80-40SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 ACQJ40X80-40SB Is Used
Machining Fixture Stops
Dial in the exact clamping extension on CNC machining fixtures to accommodate raw material tolerances without fabricating new spacer blocks.
Packaging Changeover
Rapidly adapt product pusher end positions on a packaging line during format changeovers, saving downtime by turning the external stop screw.
Prototype Positioning
Establish optimal trial end positions for new automated assembly stations, allowing engineers to find the perfect stroke length before finalizing the mechanical design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-40SB the Right Cylinder?
When sizing this actuator, consider the neighbouring bores: a 32 mm version yields 402.1 N push, whereas a 50 mm unit provides 981.8 N at 0.5 MPa. If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder is sufficient and more economical. To order this adjustable model correctly, confirm the 40 mm bore, 80 mm full stroke, 40 mm adjustment window, along with the -S magnet and -B male rod-end thread requirements.
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 ACQJ40X80-40SB FAQ
This cylinder 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 80 mm, but the external M12x1.25 adjuster allows you to shorten the extend stroke by up to 40 mm, yielding a usable extend range of 40 to 80 mm.
No, the external threaded stop only changes the extend distance, not the piston area, so force remains identical to a standard ACQ. The unit relies on fixed elastomer bumpers for deceleration rather than adjustable air cushions. Note that a plain compact cylinder will not hold its load if air pressure is lost; 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.
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 ACQJ40X80-40SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.