Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20S 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 ACQJ140X175-20S
The AirTAC ACQJ140X175-20S is a double-acting, single-rod JIS compact cylinder featuring an external threaded stop with a lock nut to limit the extend end position. You can fine-tune the forward stroke on the machine, yielding a usable extend range of 155-175 mm from the 175 mm full stroke. The retract distance remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore, delivering 7696.9 N push at 0.5 MPa. This big-bore compact variant includes a built-in magnet for electronic or reed switches, M22x2.5 female rod-end threads, and fixed NBR elastomer bumpers at each end to absorb end-of-travel energy.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20S |
|---|---|
| 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 ACQJ140X175-20S
| 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 ACQJ140X175-20S Is Used
Press Tooling Setup
Dial in the exact 155-175 mm extension on heavy stamping fixtures without machining custom spacers during initial tooling setup.
Automotive Product Changeover
Quickly alter the extend stop limit on an assembly line when switching between different vehicle subframe dimensions.
Heavy Press End-Positioning
Establish precise trial end positions for large metal-forming presses where striking depth must be micro-adjusted on the fly.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20S the Right Cylinder?
For 0.5 MPa operations, this Ø140 bore yields 7696.9 N push and 7294.8 N pull. If your application requires less force, the Ø125 bore provides 6135.9 N push, whereas the Ø160 bore offers 10053.1 N push for heavier demands. If the end position never needs modification, a fixed-stroke ACQ cylinder suffices. When ordering, confirm the 175 mm full stroke, the 20 mm adjuster window, the -S magnet option, and the standard female 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 ACQJ140X175-20S FAQ
This cylinder provides 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 usable extend range is 155-175 mm (a 20 mm adjustment window). It features a PT3/8 port, an M27x2.0 external adjuster thread, and an M22x2.5 female rod-end thread.
The external stop changes only the stroke length, not the piston area, so force remains identical to a standard ACQ. End-of-travel energy is managed by fixed NBR elastomer bumpers, not adjustable air cushions. Note that a plain compact cylinder does not hold its load on air loss; for fail-safe holding, use an external rod lock or pilot-operated check valve.
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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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