Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100SB 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 ACQJ125X125-100SB
The AirTAC ACQJ125X125-100SB is a double-acting, single-rod JIS compact cylinder featuring an external threaded stop with a lock nut to limit the extend end position. With a 125 mm full stroke and a 100 mm adjustment window, you can fine-tune the usable extend range from 25 mm up to 125 mm directly on the machine. The retract stroke remains completely unaffected. This big-bore compact variant supports standard strokes up to 300 mm.
Because the adjuster only alters travel length and not the piston area, the generated force is identical to a standard ACQ of the same bore. At 0.5 MPa, it provides 6135.9 N of push force and 5733.8 N of pull force. The unit includes a male M30x1.5 rod-end thread for direct load coupling, a PT3/8 port, and a built-in piston magnet for electronic or reed switches. Fixed NBR elastomer bumpers at each end handle end-of-stroke deceleration.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100SB |
|---|---|
| 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 ACQJ125X125-100SB
| 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 ACQJ125X125-100SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 25-125 mm extend position during a press tool changeover, locking the rod stop nut to set varying material deformation depths without machining new spacers.
Automotive Welding Line
Shift the extend endpoint on the fly to accommodate different chassis frame lengths, utilizing the male M30x1.5 thread for a rigid connection to the welding fixture.
Large Bender Trial Stops
Test intermediate bend angles on heavy-gauge tube benders by shortening the stroke within the 100 mm window, preventing crashes before finalizing the kinematic position.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X125-100SB the Right Cylinder?
For lower force requirements, the 100 mm bore provides 3927.0 N push at 0.5 MPa, while stepping up to the 140 mm bore yields 7696.9 N. If the exact 125 mm extend position is fixed and never varies, a standard non-adjustable ACQ cylinder is sufficient. When ordering this model, confirm the 125 mm bore, 125 mm full stroke, 100 mm window, the -S magnet for sensing, 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 ACQJ125X125-100SB FAQ
The usable extend range is 25-125 mm (a 125 mm full stroke shortened by up to a 100 mm window). The force is identical to a standard ACQ: push is 6135.9 N and pull is 5733.8 N at 0.5 MPa, push is 8590.3 N at 0.7 MPa, and max push is 1251 kgf at 1.0 MPa.
The external M27x2.0 threaded stop with a lock nut mechanically limits the extend travel without changing the piston area, so force stays constant. Fixed NBR elastomer bumpers decelerate the load at stroke ends, but a plain ACQ will not hold a load on air loss; for fail-safe holding, install an external rod lock or pilot-operated check valve.
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Related AirTAC ACQJ Compact Cylinders
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