Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-30SB
The ACQJ140X175-30SB is a double-acting JIS compact cylinder featuring a big 140mm bore and a 175mm full stroke. An external threaded stop with a lock nut limits the extend end position, giving a usable forward travel range of 145 to 175mm. The retract stroke remains completely unaffected by this adjustment. Because the piston area stays constant, output force is identical to a standard ACQ of this size.
This SB configuration includes a male M30x1.5 piston rod end for direct load coupling and a built-in magnet for position sensing. It supplies a push force of 7696.9N and pull of 7294.8N at 0.5MPa. The unit uses PT3/8 ports, an M27x2.0 adjuster thread, and fixed NBR elastomer bumpers at both ends rather than adjustable air cushions.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 175 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 ACQJ140X175-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×175 | 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 ACQJ140X175-30SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 145 to 175mm extend reach during heavy press commissioning to accommodate varying material thicknesses without machining new spacers.
Automotive Welding Line Changeover
Modify the forward stop position on a robotic welding fixture rapidly when switching between automotive chassis variants, ensuring precise electrode alignment.
Large Mold Trial Positions
Establish trial end positions on large injection molding clamps where the exact closing distance must be micro-adjusted on the fly to prevent mold damage.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-30SB the Right Cylinder?
Selecting this big-bore compact variant provides 7696.9N push at 0.5MPa. If your application requires less thrust, the neighboring Ø100 bore yields 3927.0N push, whereas stepping up to a Ø160 bore offers 10053.1N. A standard fixed-stroke ACQ is sufficient if your end position never requires on-machine tweaking. When ordering, confirm the 140mm bore, 175mm full stroke, 30mm 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 ACQJ140X175-30SB FAQ
It 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 30mm window allows the extend stroke to be shortened, yielding a usable forward range of 145 to 175mm.
The M27x2.0 external threaded stop with lock nut mechanically limits forward travel, shortening stroke length only; force remains identical to a standard ACQ because piston area is unchanged. The cylinder uses fixed elastomer bumpers, and since it lacks an internal lock, a pilot-operated check valve or external rod lock is required for fail-safe load holding upon air loss.
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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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