Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-20SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 30mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke30 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-20SB
The AirTAC ACQJ140X30-20SB represents the large-bore JIS compact series, delivering immense power within a space-saving riveted body. An external M27x2.0 threaded stop with lock nut restricts the forward extend length, yielding a usable extension span of 10-30mm while leaving the retract stroke completely unaffected. Output remains identical to a standard ACQ because the 140mm piston area is unchanged.
This double-acting unit integrates a male M30x1.5 piston rod end (-B) for direct load coupling and a built-in magnet (-S) for position sensing. It relies on fixed NBR elastomer bumpers at each end for end-of-travel deceleration rather than adjustable air cushions. Operating pressure spans 0.15-1.0 MPa, and the PT3/8 port handles the necessary airflow for its 32mm rod.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-20SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 30 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 ACQJ140X30-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×30 | 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 ACQJ140X30-20SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 10-30mm clamping extension on a multi-ton metalforming press during tooling trials without machining custom spacers.
Large Assembly Jig Changeover
Rapidly adapt end stops for varying heavy machinery frames during production line changeovers using the external lock nut.
Thick Material Positioning
Fine-tune the pusher depth on heavy-gauge steel alignment fixtures where precise final positioning is critical before welding.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-20SB the Right Cylinder?
Selecting this Ø140mm body yields a push force of 7696.9N at 0.5MPa. If your application requires less thrust, stepping down to a Ø100mm bore provides 3927.0N push at 0.5MPa. Since 140mm is the second largest available size, stepping up to Ø160mm offers 10053.1N push at 0.5MPa. If your end position never varies, a fixed-stroke ACQ suffices. When ordering, confirm the 30mm full stroke, 20mm adjuster window, S magnet, and 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X30-20SB FAQ
It delivers 7696.9N push and 7294.8N pull at 0.5MPa, 10775.7N push at 0.7MPa, and a maximum push of 1570kgf at 1.0MPa. The full stroke is 30mm with a 20mm adjuster window, allowing a usable extend range of 10-30mm.
The external M27x2.0 threaded stop physically limits how far the rod extends, shortening the stroke without altering the 140mm piston area, so force remains identical to a standard ACQ. The unit uses fixed NBR 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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