Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke250 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50SB
The ACQJ140X250-50SB is a double-acting JIS compact cylinder featuring an external extend stop with a lock nut, allowing you to fine-tune the forward stroke on the machine. With a 50mm adjustment window, the usable extend range spans 200mm up to the full 250mm, while the retract stroke remains completely unaffected.
This big-bore variant delivers substantial power identical to a standard ACQ, as the adjuster alters stroke length only. It includes a male M30x1.5 rod-end thread for direct load coupling, a PT3/8 port, and fixed elastomer bumpers at both ends. The integrated magnet (-S) supports reed or solid-state switches, and the external adjuster utilizes an M27x2.0 thread.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 250 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 (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 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 ACQJ140X250-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×250 | 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 ACQJ140X250-50SB Is Used
Press Tonnage Setup
Dial in the exact 200-250mm extend position during press tooling changes without machining new spacers or swapping components.
Heavy Fixture Positioning
Adjust the forward stop on large welding fixtures to accommodate different chassis dimensions directly on the factory floor.
Pallet Squaring Stops
Tune the extend end position to guide and square varying pallet widths on automated packaging lines for precise placement.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50SB the Right Cylinder?
Selecting this 140mm bore provides a push force of 7696.9N at 0.5 MPa. If your application requires less power, stepping down to a 125mm bore yields 6135.9N of push force, whereas moving up to a 160mm bore provides 10053.1N. A fixed-stroke ACQ is sufficient if your end position never varies. When ordering, verify the 250mm full stroke, the 50mm window, the male M30x1.5 rod thread, and the piston magnet for sensing.
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 ACQJ140X250-50SB FAQ
It delivers a push force of 7696.9N and a pull force of 7294.8N at 0.5 MPa, with a push of 10775.7N at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The full stroke is 250mm with a 50mm window, allowing a usable extend range of 200-250mm.
The external M27x2.0 threaded stop with lock nut limits the extend length without changing the piston area, meaning force is identical to a standard ACQ. Fixed elastomer bumpers decelerate the rod near stroke ends, but a plain cylinder does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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