Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40SB 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 ACQJ40X50-40SB
The AirTAC ACQJ40X50-40SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the EXTEND end position. You can fine-tune the usable extend range from 10 mm up to the full 50 mm directly on your equipment, while 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.
This model includes a male M14x1.5 rod-end thread (-B) for direct load coupling and a built-in piston magnet (-S) that works with reed or electronic solid-state switches. It features a fixed NBR elastomer bumper at each end for end-of-stroke deceleration, and the external adjuster utilizes an M12x1.25 thread.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40SB |
|---|---|
| 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 ACQJ40X50-40SB
| 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 ACQJ40X50-40SB Is Used
Product Changeover Stops
Dial in the extend endpoint from 10 to 50 mm during packaging line format changes to accommodate different carton heights without machining new spacers.
Trial End Positions
Set precise clamping depths on a modular assembly fixture by adjusting the external stop, allowing safe testing of new component dimensions before finalizing the setup.
Setup-Varying Fixtures
Modify the extend stroke on a testing rig to trigger sensors at varying material thicknesses, using the lock nut to secure the exact position.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-40SB the Right Cylinder?
When sizing this bore 40 unit, dropping down to a 32 mm bore yields 402.1 N push at 0.5 MPa, whereas stepping up to a 50 mm bore provides 981.8 N push. If your application never requires altering the extend endpoint, a fixed-stroke ACQ cylinder is sufficient. To order, confirm the 40 mm bore, 50 mm full stroke, 40 mm adjustment window, the -S magnet, and the -B male rod thread.
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 ACQJ40X50-40SB 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 50 mm with a 40 mm adjustment window, giving a usable extend range of 10-50 mm.
No, the adjuster changes the extend stroke length only, so the force remains identical to a standard ACQ and the retract stroke is unaffected. The unit relies on a fixed elastomer bumper for deceleration, and the -S magnet supports reed or electronic 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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