Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke75 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30S
The AirTAC ACQJ140X75-30S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut on the rod-end side. This mechanism limits the extend travel, allowing you to fine-tune the end position directly on your equipment without swapping parts. With a full stroke of 75 mm and a 30 mm window, the usable extend range spans 45 to 75 mm. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays constant, the output force is identical to a standard ACQ of the same bore, delivering 7696.9 N push at 0.5 MPa. This big-bore compact variant integrates fixed elastomer NBR bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. Equipped with a piston magnet (-S), it supports both reed and solid-state electronic switches via its built-in grooves.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 75 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 ACQJ140X75-30S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×75 | 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 ACQJ140X75-30S Is Used
Heavy Press Tuning
Dial in the exact extend end position during product-changeover on a 140 mm bore press setup without machining new stop collars.
Large Fixture Alignment
Adjust the extend stroke within the 45-75 mm range to align heavy holding fixtures on automated welding lines rapidly.
Bending Machine Stops
Set precise material bend depths on the fly for trial end positions in metal fabrication equipment using the external stop lock nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30S the Right Cylinder?
When sizing this 140 mm bore, stepping down to a 125 mm bore yields 6135.9 N push at 0.5 MPa, while stepping up to a 160 mm bore provides 10053.1 N. If your application never requires altering the extend endpoint, a fixed-stroke ACQ cylinder is sufficient. To order this adjustable version, confirm the 140 mm bore, 75 mm full stroke, 30 mm window, -S magnet, and 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 ACQJ140X75-30S FAQ
This 140 mm bore cylinder 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 full stroke is 75 mm with a 30 mm adjustable window, giving a usable extend range of 45-75 mm. It features a PT3/8 port and an M27x2.0 external adjuster thread.
The external threaded stop and lock nut limit only the extend stroke length, meaning the output force remains identical to a standard ACQ because the piston area is unchanged. The cylinder uses fixed elastomer NBR bumpers at each end rather than adjustable air cushions. For fail-safe load holding on air loss, an external rod lock or pilot-operated check valve is required, as the bumper only decelerates near the stroke end.
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
Request a Quote for Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.