Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20SB 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 ACQJ140X175-20SB
The AirTAC ACQJ140X175-20SB is a double-acting, single-rod JIS compact cylinder engineered for big-bore tasks. An external M27x2.0 threaded stop with lock nut precisely limits the extend end position, granting a usable forward travel window of 155 to 175 mm. The return stroke remains completely unaffected by this mechanism. Because the internal piston area stays constant, generated force equals a standard ACQ of identical diameter.
This 140mm bore variant delivers 7696.9N push and 7294.8N pull at 0.5MPa, scaling to 1570 kgf maximum push at 1.0MPa. It features a 32mm piston rod, PT3/8 porting, and an M30x1.5 male rod end for direct load coupling. Integrated fixed elastomer bumpers absorb impact energy at both travel extremes, while the built-in piston magnet (-S) accommodates both reed and solid-state sensing switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20SB |
|---|---|
| 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 ACQJ140X175-20SB
| 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 ACQJ140X175-20SB Is Used
Heavy Press Positioning
Dial in the exact 155-175mm clamping reach on large metal-forming presses during die-changeover, avoiding the need to machine custom spacers.
Large Assembly Calibration
Test varying end-stop depths for heavy component insertion stations, tweaking the M27x2.0 adjuster to find the perfect mating pressure.
Woodworking Machinery Stops
Modify the forward clamp position on high-force timber routing equipment to accommodate different material thicknesses on the fly.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20SB the Right Cylinder?
If your application requires slightly less thrust, the 125mm bore yields 6135.9N push at 0.5MPa, whereas stepping up to the 160mm bore provides 10053.1N. Choose this 140mm option when your setup demands heavy thrust alongside on-machine extend tuning. If the exact 175mm forward position never varies, a fixed-stroke ACQ cylinder suffices. When ordering, confirm the 140mm bore, 175mm full stroke, 20mm adjuster window, the -S magnet, and -B male 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 ACQJ140X175-20SB FAQ
At 0.5MPa it provides 7696.9N push and 7294.8N pull; at 0.7MPa push is 10775.7N. Max push is 1570 kgf at 1.0MPa. The full stroke is 175mm, with a 20mm adjuster window allowing a usable extend range of 155-175mm. The retract stroke is unaffected.
The M27x2.0 external threaded stop with lock nut physically limits forward travel, shortening the extend stroke without altering piston area, so force remains identical to a standard ACQ. Fixed elastomer bumpers decelerate the load at travel ends. For fail-safe load holding upon air loss, an external rod lock or pilot-operated check valve is required, as the cylinder drifts when valve-centered.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X175-20SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.