Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-75S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-75S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke125 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-75S
The AirTAC ACQJ125X125-75S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut to limit the extend end position. With a 125mm full stroke and a 75mm adjustment window, you can fine-tune the usable extend range from 50mm up to 125mm directly on the machine. The retract stroke remains completely unaffected by this mechanism.
Because the piston area is unchanged, output force matches a standard ACQ of this bore exactly. The 125mm bore delivers 6135.9N push and 5733.8N pull at 0.5MPa. It includes a -S piston magnet compatible with reed or electronic solid-state switches, fixed NBR elastomer bumpers at both ends, and a PT3/8 port.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-75S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-75S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 125 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 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 ACQJ125X125-75S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×125 | 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 ACQJ125X125-75S Is Used
Heavy Press Tonnage Setup
Dial in the exact 50-125mm extend reach during heavy press changeovers without machining new spacers or swapping cylinders.
Automotive Welding Fixture
Adjust the extend stop on the fly to accommodate varying chassis panel heights while maintaining the full 6135.9N clamping force.
Large Pallet Positioning
Fine-tune the end-of-stroke stop for different pallet thicknesses in automated warehousing lines, relying on fixed bumpers for deceleration.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-75S the Right Cylinder?
If you need slightly less thrust, dropping to the 100mm bore yields 3927.0N push at 0.5MPa, while stepping up to the 140mm bore provides 7696.9N push. A fixed-stroke ACQ suffices if your end position never varies. When ordering this adjustable model, confirm the 125mm bore, 125mm full stroke, 75mm window, -S magnet, and the default M22x2.5 female 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 ACQJ125X125-75S FAQ
It provides 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251 kgf at 1.0 MPa. The usable extend range is 50-125mm, achieved by shortening the 125mm full stroke by up to the 75mm window.
An M27x2.0 external threaded screw with a lock nut limits the extend length without altering piston area, so force is identical to a standard ACQ. It uses fixed NBR elastomer bumpers for end-of-stroke deceleration, not adjustable air cushions. A plain compact cylinder does not hold loads on air loss, so use an external rod lock for fail-safe positioning.
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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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