Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50S
The AirTAC ACQJ140X175-50S is a double-acting JIS compact cylinder from the big-bore range featuring an external extend stop. An external threaded rod with a lock nut limits how far the piston extends, yielding a usable forward travel range of 125 to 175 mm. The return stroke remains completely unaffected by this adjustment.
Because the adjuster only alters travel length and not the internal piston area, the output force is identical to a standard ACQ of this size. You get 7696.9 N push and 7294.8 N pull at 0.5 MPa, scaling to a maximum push of 1570 kgf at 1.0 MPa. The body uses fixed elastomer bumpers rather than adjustable pneumatic cushions, and the integrated -S piston magnet supports both reed and solid-state electronic sensors.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 175 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 ACQJ140X175-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×175 | 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 ACQJ140X175-50S Is Used
Press Tooling Changeovers
Adapt the clamping reach on heavy press machinery instantly when switching dies, using the external stop to set exact 125 to 175 mm extension limits without machining new spacers.
Heavy Material Forming
Dial in the exact bend or form depth on thick metal blanks, relying on the 1570 kgf max push to hold position against the fixed elastomer bumper at cycle end.
Pallet Positioning Stops
Set precise end stops for large automated pallet lifts, allowing operators to tweak the 50 mm adjustment window on the floor to accommodate varying load heights.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-50S the Right Cylinder?
When sizing this big-bore unit, the adjacent Ø125 bore provides 6135.9 N push at 0.5 MPa, while the larger Ø160 yields 10053.1 N push. Choose this 140 mm bore if your required force falls strictly within that bracket. If your setup never requires altering the end position, a fixed-stroke ACQ cylinder is simpler and suffices. To order this adjustable version correctly, confirm the 140 mm bore, the 175 mm full stroke, the 50 mm adjuster window, the -S magnet, 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 ACQJ140X175-50S FAQ
The usable extend range is 125 to 175 mm (a 50 mm window off the 175 mm full stroke). Force is identical to a standard ACQ: 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa.
An external M27x2.0 threaded screw with a lock nut mechanically limits the forward extension length without changing the piston area, so force stays constant. The cylinder uses fixed elastomer bumpers, not adjustable air cushions. The included -S piston magnet works with both reed and electronic solid-state switches.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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