Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-75SB 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 ACQJ125X175-75SB
The AirTAC ACQJ125X175-75SB represents the big-bore JIS compact series, engineered for double-acting operation with a single rod. An external M27x2.0 threaded stop and lock nut restricts the extend end position, providing a usable forward travel range of 100 to 175 mm. The return stroke remains completely unaffected, giving you precise on-machine end-position tuning without swapping components.
Output force stays identical to a standard ACQ of this bore, as the adjuster alters stroke length only. Operating at 0.5 MPa yields 6135.9 N push and 5733.8 N pull, while the fixed NBR elastomer bumpers absorb end-of-stroke impacts. This variant includes a piston magnet for electronic or reed sensors and a male M30x1.5 rod end for direct load coupling.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-75SB |
|---|---|
| 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 ACQJ125X175-75SB
| 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 ACQJ125X175-75SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 100 to 175 mm extend reach during heavy press commissioning to accommodate varying material thicknesses without machining new spacers.
Automated Pallet Changeover
Fine-tune the forward stop position on large packaging lines to handle different pallet widths rapidly while maintaining the full retract stroke.
Large Fixture Positioning
Adjust the end stop externally on automotive welding fixtures to test trial end positions for new panels before finalizing hard stops.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-75SB the Right Cylinder?
When sizing this big-bore unit, stepping down to a 100 mm bore drops the 0.5 MPa push to 3927.0 N, whereas a 140 mm bore raises it to 7696.9 N. If your application never requires altering the forward end point, a fixed-stroke ACQ cylinder provides the same holding power in a simpler package. To order this adjustable version correctly, confirm the 125 mm bore, 175 mm full stroke, 75 mm window, the S magnet option, 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 ACQJ125X175-75SB FAQ
The usable extend range is 100 to 175 mm (175 mm full stroke minus the 75 mm window). Force equals a standard ACQ: 6135.9 N push and 5733.8 N pull at 0.5 MPa, 8590.3 N push at 0.7 MPa, and a maximum push of 1251 kgf at 1.0 MPa.
The external M27x2.0 threaded stop with lock nut limits forward travel only; the retract stroke is unaffected, and the fixed NBR bumper decelerates the piston near the end. Because this is a double-acting cylinder, it will not hold a load on air loss—install an external rod lock or pilot-operated check valve for fail-safe holding.
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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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