Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75S 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 ACQJ140X175-75S
The ACQJ140X175-75S is a double-acting, big-bore JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend stroke from 100 mm up to the full 175 mm directly on your machine, while the retract stroke remains completely unaffected. This on-machine tuning eliminates the need to swap physical parts during product changeovers.
Because the adjuster only alters travel length and not the piston area, the output force stays identical to a standard ACQ of the same bore, delivering 7696.9 N push at 0.5 MPa. This Ø140 mm variant includes a built-in piston magnet (-S) compatible with reed or electronic solid-state switches, and relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75S |
|---|---|
| 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 ACQJ140X175-75S
| 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 ACQJ140X175-75S Is Used
Press Tooling Changeover
Adapt stopper depths rapidly on heavy press lines when switching material thicknesses, using the external adjuster to dial in the exact end position without replacing the cylinder.
Automotive Assembly Fixtures
Handle large component placement on automotive lines by tweaking the extend reach for different chassis variants, relying on the 1570 kgf max push capacity for secure positioning.
Palletizing End Stops
Modify the extend stroke on heavy-duty packaging equipment to accommodate varying pallet dimensions, utilizing the fixed NBR bumper to absorb kinetic energy at the stroke end.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-75S the Right Cylinder?
Select this 140 mm bore model when your setup requires high thrust combined with variable extend end-points. If your application only needs a fixed depth, a standard ACQ cylinder will suffice. For sizing, the smaller Ø100 bore provides 3927.0 N push at 0.5 MPa, whereas the larger Ø160 bore yields 10053.1 N. When ordering, verify the full 175 mm stroke, the 75 mm adjuster window, the -S magnet for sensing, and the default female M22x2.5 rod-end thread. Remember that a plain compact cylinder drifts on air loss; specify an external rod lock for fail-safe load holding.
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 ACQJ140X175-75S FAQ
This big-bore cylinder has a 140 mm bore and a 175 mm full stroke with a 75 mm adjustment window, yielding a usable extend range of 100-175 mm. 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 port size is PT3/8.
The external M27x2.0 threaded stop with a lock nut physically limits how far the rod extends, allowing you to shorten the extend stroke without altering the retract stroke. Because the piston area remains unchanged, the output force is identical to a standard ACQ of the same bore. The cylinder uses a fixed elastomer bumper for end-of-stroke deceleration, not an adjustable air cushion.
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Related AirTAC ACQJ Compact Cylinders
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