Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-100S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-100S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke300 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-100S
The ACQJ140X300-100S is a double-acting JIS compact cylinder featuring a 140mm bore and a 300mm full stroke. An external threaded stop with a lock nut permits on-machine extend end-position tuning, yielding a usable forward range of 200-300mm. The return stroke remains unaffected. Because the piston area is unchanged, output force equals a standard ACQ of this size.
This big-bore variant delivers 7696.9N push at 0.5MPa and 10775.7N at 0.7MPa. It includes a fixed NBR elastomer bumper at each end and a built-in magnet (-S) for position sensing. Operating pressure spans 0.15-1.0MPa, and the Ø32mm piston rod uses an M22x2.5 female thread.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-100S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-100S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 300 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 ACQJ140X300-100S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×300 | 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 ACQJ140X300-100S Is Used
Heavy Press Tonnage Calibration
Dial in the exact 200-300mm extend position during heavy press commissioning to calibrate tonnage without swapping mechanical spacers.
Large Mold Tooling Changeover
Adapt forward reach instantly for different large mold depths in injection molding lines, using the lock nut to secure the new stop.
Assembly Line Plunge Depth
Fine-tune the downward plunge distance on automotive assembly rigs to accommodate new model variants without retooling the entire station.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-100S the Right Cylinder?
If 7294.8N pull at 0.5MPa is insufficient, consider the Ø160 bore (9424.8N pull); if you need less force, the Ø125 bore provides 5733.8N pull. Choose this 140mm option when your setup requires high thrust alongside variable forward positioning. A fixed-stroke ACQ suffices if your end stop never varies. Confirm ordering essentials: 140mm bore, 300mm full stroke, 100mm window, S magnet, and female 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 ACQJ140X300-100S FAQ
The usable extend range is 200-300mm (300mm full stroke minus the 100mm window). The retract stroke is unaffected. It 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 external adjuster thread is M27x2.0.
No, the adjuster changes the forward stroke length only, leaving piston area and output force identical to a standard ACQ. Deceleration is handled by a fixed NBR elastomer bumper at each end, not an adjustable air cushion. For high-speed or high-energy loads, add an external shock absorber. Note that a plain ACQ-type does not hold its load on air loss; use an external rod lock for fail-safe holding.
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Related AirTAC ACQJ Compact Cylinders
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