Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50SB 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 ACQJ40X80-50SB
The AirTAC ACQJ40X80-50SB is a JIS double-acting compact cylinder with an external threaded stop and lock nut that limits the extend end position. With a full stroke of 80 mm and a 50 mm adjustment window, the usable extend range is 30-80 mm. The retract stroke remains completely unaffected. Because the piston area is unchanged, force output is identical to a standard ACQ of this bore.
This unit includes a male-thread piston rod end (M14x1.5) for direct load coupling and a built-in magnet (-S) for position sensing. It uses a PT1/8 port and a fixed NBR elastomer bumper at each end for end-of-stroke deceleration. The external adjuster utilizes an M12x1.25 thread for precise on-machine positioning.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50SB |
|---|---|
| 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 ACQJ40X80-50SB
| 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 ACQJ40X80-50SB Is Used
Product Changeover Stops
Quickly dial in a new extended end position on packaging lines when switching between box sizes, using the external stop to shorten travel from 80 mm down to 30 mm.
Trial End Positions
Dial in exact clamping depth on CNC fixtures without machining new spacers, preventing part crushing by limiting the extend stroke precisely on the machine.
Setup-Varying Fixtures
Accommodate varying material thicknesses in automated assembly presses by tuning the extend stop outward as needed, maintaining consistent force without hardware swaps.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X80-50SB the Right Cylinder?
When sizing this 40 mm bore actuator, it provides 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. If your application requires less force, stepping down to a 32 mm bore yields 402.1 N of push, while moving up to a 50 mm bore provides 981.8 N for heavier loads. If the end position never varies, a fixed-stroke ACQ cylinder is sufficient. For this adjustable model, confirm the bore, full stroke, adjustment window, magnet (-S), and male rod thread (-B) when 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 ACQJ40X80-50SB FAQ
The usable extend range is 30-80 mm (an 80 mm full stroke minus up to a 50 mm window). 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.
An external M12x1.25 threaded stop with a lock nut limits the extend stroke, but the piston area remains unchanged so force is identical to a standard ACQ. The cylinder uses fixed elastomer bumpers for deceleration, and the -S magnet 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
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