Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30B 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 ACQJ40X50-30B
The AirTAC ACQJ40X50-30B is a double-acting JIS compact cylinder with a 40mm bore and a 50mm full stroke. An external threaded stop with a lock nut limits the extend end position, providing a usable forward range of 20 to 50mm. The retract distance remains completely unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
This variant features a male-thread piston rod end (M14x1.5) for direct load coupling, a 16mm rod diameter, and a PT1/8 port. It includes fixed elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. The body retains magnetic-switch grooves, though this specific unit ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30B |
|---|---|
| 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 ACQJ40X50-30B
| 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 ACQJ40X50-30B Is Used
Machining Fixture Stops
Dial in the exact extend position from 20 to 50mm on a CNC clamping fixture without machining new spacer blocks during product changeovers.
Carton Sealing Flaps
Fine-tune the platen height on packaging equipment to accommodate varying box sizes while relying on the 628.3N extend force.
Assembly Press Tonnage
Set trial end positions on an assembly press, using the fixed elastomer bumper to absorb the 879.6N impact at 0.7MPa.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X50-30B the Right Cylinder?
If your application requires less force, the ACQJ32 bore provides 402.1N push at 0.5 MPa, whereas stepping up to the ACQJ50 yields 981.8N. If the forward end position never needs on-machine tuning, a fixed-stroke ACQ cylinder is sufficient. When ordering, verify the 40mm bore, 50mm full stroke, 30mm adjustment window, the male rod thread, and whether a magnet is needed.
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 ACQJ40X50-30B FAQ
The push force is 628.3N and pull is 527.8N at 0.5MPa, with a max push of 128kgf at 1.0MPa. The full stroke is 50mm with a 30mm adjustment window, giving a usable extend range of 20-50mm. The retract stroke is unaffected.
An external M12x1.25 threaded stop and lock nut mechanically limits the extend distance, changing only the stroke length without altering the piston area or force. The cylinder uses fixed NBR elastomer bumpers at both ends for deceleration rather than adjustable air cushions.
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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