Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-75S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-75S 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 ACQJ140X250-75S
The AirTAC ACQJ140X250-75S is a double-acting, big-bore JIS compact cylinder engineered for precise extend-end tuning. An external M27x2.0 threaded stop and lock nut lets you shorten the forward stroke by up to 75mm directly on the machine. This yields a usable extension span of 175 to 250mm, while the retract distance remains fixed at 250mm. Operating between 0.15 and 1.0 MPa, it integrates a piston magnet for position sensing.
Because the adjustment solely limits travel without altering piston area, output force stays identical to a standard ACQ of this size. You get 7696.9N push and 7294.8N pull at 0.5MPa, climbing to 10775.7N push at 0.7MPa. The Ø32mm rod features an M22x2.5 female end, and fixed NBR elastomer bumpers absorb impact at both extremes rather than relying on adjustable air cushions.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-75S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-75S |
|---|---|
| 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 ACQJ140X250-75S
| 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 ACQJ140X250-75S Is Used
Press Tonnage Setup
Dial in the exact 175-250mm extend position during heavy press tooling changes without machining new spacers.
Automotive Welding Fixtures
Accommodate varying chassis frame widths on the fly by tweaking the external stop for rapid model changeover.
Heavy Lifting Stations
Test different clamping heights on large assembly lifts by limiting the forward stroke to prevent over-travel.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-75S the Right Cylinder?
Selecting this 140mm bore provides massive thrust up to 1570kgf at 1.0MPa. If your application needs less force, stepping down to a Ø100 bore yields 3927.0N push at 0.5MPa; conversely, a Ø160 bore offers 10053.1N push if higher capacity is required. Choose this adjustable model only if your setup requires on-the-fly end-position changes across a 175-250mm window. For fixed travel, a standard ACQ cylinder is simpler. Confirm your requirements for the S magnet, PT3/8 port, M22x2.5 female rod thread, and the 75mm adjustment window 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 ACQJ140X250-75S FAQ
This big-bore cylinder delivers 7696.9N push and 7294.8N pull at 0.5MPa, 10775.7N push at 0.7MPa, and a maximum push of 1570kgf at 1.0MPa. The full stroke is 250mm, but the external stop provides a 75mm window, allowing a usable extend range of 175 to 250mm.
No, the adjuster only changes the extend length, so force remains identical to a standard ACQ of the same bore. Deceleration is handled by fixed NBR elastomer bumpers at each end, not adjustable air cushions. Note that this cylinder will drift if air pressure is lost; use an external rod lock for fail-safe load holding.
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Related AirTAC ACQJ Compact Cylinders
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