Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-100S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-100S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-100S
The AirTAC ACQJ125X175-100S is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut that limits the EXTEND end position. You can tune the usable extend range from 75 mm up to the full 175 mm directly on your equipment, while the RETRACT stroke remains completely unaffected. As a big-bore variant, it supports up to 300 mm of standard stroke within a space-saving riveted body.
Because the adjuster only alters travel length and not the piston area, the output force remains identical to a standard ACQ of this bore. You get 6135.9 N of push force and 5733.8 N of pull force at 0.5 MPa. The unit includes a fixed NBR elastomer bumper at each end for end-of-stroke deceleration, and the built-in magnet (-S) supports both reed and solid-state electronic sensors.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-100S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-100S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 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 (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 ACQJ125X175-100S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | 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 ACQJ125X175-100S Is Used
Press Tooling Changeover
Dial in the exact 75 to 175 mm extend position during die swaps on a large press line without machining new spacers or swapping cylinders.
Heavy Fixture Positioning
Vary the extend stop on heavy assembly fixtures to accommodate multiple product variants, relying on the unchanged 6135.9 N push force at 0.5 MPa.
Large Press Trial Strokes
Test different end positions on large metal-forming machinery to find the optimal forming depth before locking down the M27x2.0 adjuster nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-100S the Right Cylinder?
Selecting this Ø125 mm model provides 6135.9 N push at 0.5 MPa. If you need less force, stepping down to a Ø100 bore yields 3927.0 N push, whereas stepping up to a Ø140 bore provides 7696.9 N push at the same pressure. If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder will suffice. When ordering, confirm the 175 mm full stroke, the 100 mm adjustable window, the -S magnet, and the default female M22x2.5 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 ACQJ125X175-100S FAQ
The usable extend range is 75-175 mm (175 mm full stroke minus the 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 the maximum push is 1251 kgf at 1.0 MPa.
An external M27x2.0 threaded screw with a lock nut physically limits how far the rod extends, shortening travel without changing piston area or force. The cylinder uses a fixed NBR elastomer bumper for deceleration, not an adjustable air cushion. A plain ACQ-type cylinder will not hold a load on air loss; for fail-safe holding, add 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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