Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke50 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S
The AirTAC ACQJ140X50-30S is a double-acting JIS compact cylinder featuring an external extend-stop mechanism. A threaded M27x2.0 adjuster and lock nut permit on-machine end-position tuning, providing a usable extend range of 20 to 50 mm from the 50 mm full stroke. Retract travel remains unaffected. Built for the big-bore compact range, this Ø140 unit operates with a PT3/8 port and a Ø32 piston rod.
Because the piston area stays constant, output force is identical to a standard ACQ of this bore: 7696.9 N push and 7294.8 N pull at 0.5 MPa. The -S suffix adds a piston magnet compatible with reed or solid-state switches, fitting neatly into the fixed elastomer bumper body design without requiring adjustable air cushions.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 50 mm |
| Adjuster thread | M27×2.0 |
| Port size | PT3/8 |
| 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 | M22×2.5 (F) / M30×1.5 (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 (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S Is Used
Press Tonnage Setup
Dial in the exact 20 to 50 mm extend position during press tooling setup to accommodate varying material thicknesses without machining new spacers.
Automated Welding Changeover
Adjust the extend stroke on the fly for product changeovers in robotic welding lines, accommodating different fixture heights rapidly.
Palletizing Stops
Fine-tune the end stop position for varying pallet sizes in packaging lines, ensuring precise placement without swapping mechanical parts.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S the Right Cylinder?
For lower force needs, the Ø100 bore yields 3927.0 N push at 0.5 MPa, whereas the Ø160 variant provides 10053.1 N push if your application requires more power. If your extend endpoint never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering this adjustable model, confirm the 140 mm bore, 50 mm full stroke, 30 mm window, -S magnet option, and default female M22x2.5 rod-end 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30S FAQ
It delivers 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The 50 mm full stroke includes a 30 mm adjustable window, allowing an extend range of 20 to 50 mm.
No, the adjuster only changes the extend stroke length, leaving force unchanged. Deceleration is handled by a fixed NBR elastomer bumper at each end, not an adjustable air cushion. For high-speed or high-energy loads, use an external shock absorber or slow the approach.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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