Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-40S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 200mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke200 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-40S
The AirTAC ACQJ140X200-40S is a double-acting JIS compact cylinder from the big-bore range, featuring a 140mm bore and a 200mm full stroke. An external M27x2.0 threaded stop with a lock nut lets you limit the extend end position, yielding a usable extend range of 160-200mm. The retract stroke remains completely unaffected by this mechanism.
Because the internal piston area stays constant, the output force is identical to a standard ACQ of this size, delivering 7696.9N push at 0.5MPa. The unit incorporates a fixed NBR elastomer bumper at each end for end-of-stroke deceleration and includes a built-in magnet (-S) for positioning feedback. It operates at pressures from 0.15 to 1.0MPa with a PT3/8 port.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-40S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 200 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 ACQJ140X200-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×200 | 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 ACQJ140X200-40S Is Used
Heavy Press Tonnage Setup
Dial in the exact 160-200mm extend position during heavy press commissioning to accommodate varying material thicknesses without machining new spacer blocks.
Automotive Welding Line Changeover
Rapidly reposition the end stop for new model run changes on a automotive body-in-white line, reducing tooling setup time between distinct vehicle platforms.
Large Metal Forming Calibration
Fine-tune the bend depth on a large metal forming station during initial prototype trials, finding the optimal end position before locking the adjuster nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-40S the Right Cylinder?
When sizing this 140mm bore actuator, stepping down to the 125mm bore yields 6135.9N push at 0.5MPa, while the larger 160mm bore provides 10053.1N. If your machinery requires a fixed 200mm extend length without variation, a standard ACQ cylinder will suffice and avoids the external adjuster assembly. To order this adjustable variant correctly, confirm the 140mm bore, 200mm full stroke, 40mm window, the -S magnet for sensing, and the default female M22x2.5 rod-end 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 ACQJ140X200-40S FAQ
The usable extend range is 160-200mm (200mm full stroke minus up to a 40mm window). The output force equals a standard ACQ: 7696.9N push and 7294.8N pull at 0.5MPa, 10775.7N push at 0.7MPa, and a maximum push of 1570 kgf at 1.0MPa.
The M27x2.0 external threaded stop limits only the extend length, leaving the retract stroke untouched and the force unchanged. Deceleration relies on a fixed NBR elastomer bumper, not an adjustable air cushion. For fail-safe load holding on air loss, an external rod lock or pilot-operated check valve is required, as the piston drifts when unpressurized.
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