Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 150mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke150 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-30SB
The ACQJ125X150-30SB is a double-acting, single-rod JIS compact cylinder engineered for big-bore applications up to 300mm stroke. It features an external threaded stop with a lock nut that restricts the extend stroke, yielding a usable extension range of 120-150mm. The retract stroke remains completely unaffected. Because the internal piston area is unaltered, the output force is identical to a standard ACQ of this bore.
This variant includes a male M30x1.5 piston rod thread for direct load coupling and an integrated piston magnet (-S) compatible with reed or solid-state switches. Operating at 0.15-1.0 MPa with PT3/8 ports, it incorporates fixed NBR elastomer bumpers at each end for end-of-stroke deceleration. The external adjuster utilizes an M27x2.0 thread for precise on-machine positioning.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 150 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 ACQJ125X150-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 ACQJ125X150-30SB Is Used
Heavy Press Tonnage Calibration
Dial in the exact extend position during press setup without swapping hardware, allowing rapid tonnage adjustments on metal forming equipment.
Automotive Welding Line Changeover
Adapt clamp extension depths quickly for different vehicle platforms, using the 120-150mm range to accommodate varied fixture geometries.
Large Assembly Fixture Proving
Establish trial end positions on heavy-duty assembly rigs, fine-tuning the 125mm bore thrust to verify mating alignment before final lockdown.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-30SB the Right Cylinder?
When sizing this big-bore 125mm unit, note it delivers 6135.9N push and 5733.8N pull at 0.5MPa, escalating to 1251kgf max push at 1.0MPa. If your application requires a fixed extension depth without variation, a standard ACQ cylinder will suffice. For neighboring capacities, dropping to a 100mm bore yields 3927.0N push, while stepping up to a 140mm bore provides 7696.9N push at 0.5MPa. Confirm the 150mm full stroke, 30mm adjustment window, -S magnet, and -B male rod end when ordering.
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 ACQJ125X150-30SB FAQ
This cylinder provides 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251kgf at 1.0MPa. The full stroke is 150mm with a 30mm window, resulting in a usable extend range of 120-150mm.
The external M27x2.0 threaded stop and lock nut limit only the extend length, leaving the retract stroke unaffected and preserving the standard ACQ force. The cylinder uses fixed NBR bumpers for deceleration, but a plain ACQ-type will not hold its load on air loss; for fail-safe holding, an external rod lock or pilot-operated check valve is required.
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Related AirTAC ACQJ Compact Cylinders
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