Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30SB 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 ACQJ140X75-30SB
The AirTAC ACQJ140X75-30SB is a double-acting, single-rod JIS compact cylinder engineered for big-bore tasks up to 300mm stroke. It features a male M30x1.5 piston rod (B) and an integrated magnet (S) for position sensing. An external threaded stop with a lock nut limits the extend end position, providing an adjustable window of 30mm. This yields a usable extend range of 45-75mm, while the retract stroke remains completely unaffected.
Because the internal piston area stays constant, the output force is identical to a standard ACQ of this bore. At 0.5MPa, it generates 7696.9N of push force and 7294.8N of pull force. The cylinder uses a PT3/8 port and fixed NBR elastomer bumpers at both ends rather than adjustable air cushions. For high-speed or high-energy cycling, adding an external shock absorber or slowing the approach is recommended.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30SB |
|---|---|
| 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 ACQJ140X75-30SB
| 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 ACQJ140X75-30SB Is Used
Press Tonnage Setup
Dial in the exact 45-75mm extend reach on a stamping press without machining custom spacers during initial tooling setup.
Heavy Fixture Changeover
Modify the extend stop for varying product dimensions on an automotive assembly line quickly using the external lock nut.
Bending Machine Trials
Test multiple end positions on a thick-gauge metal bending machine to find the perfect angle before finalizing the stroke.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30SB the Right Cylinder?
When sizing this big-bore 140mm unit, consider the neighboring bores. Stepping down to an ACQJ125 yields 6135.9N push at 0.5MPa, whereas stepping up to an ACQJ160 provides 10053.1N push at 0.5MPa. If your application never requires end-position tuning, a fixed-stroke ACQ cylinder is sufficient. To order this adjustable variant, confirm the 140mm bore, 75mm full stroke, 30mm window, the S magnet for electronic or reed switches, 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 ACQJ125~160 Adjustable Compact Cylinder ACQJ140X75-30SB FAQ
This cylinder provides 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 75mm with a 30mm window, allowing a usable extend range of 45-75mm.
The adjuster only changes the extend stroke length, not the piston area, so force remains identical to a standard ACQ. It uses an M27x2.0 external threaded stop with fixed elastomer bumpers; it does not hold loads on air loss, so an external rod lock is needed for fail-safe holding.
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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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