Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-75SB 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 ACQJ140X200-75SB
The AirTAC ACQJ140X200-75SB is a double-acting, single-rod JIS compact cylinder from the big-bore range, featuring an external threaded stop with a lock nut to precisely limit the extend end position. With a full stroke of 200mm and a 75mm adjustment window, you can tune the usable extend range from 125mm up to 200mm directly on the machine without changing parts. The retract stroke remains completely unaffected. This model includes a male piston rod thread (M30x1.5) for direct load coupling and a built-in magnet (-S) for position sensing.
Because the adjustment mechanism only restricts travel length and not the piston area, the force output remains identical to a standard ACQ of the same bore. At 0.5 MPa, it delivers 7696.9N of push force and 7294.8N of pull force, increasing to 10775.7N push at 0.7 MPa, with a maximum push capacity of 1570 kgf at 1.0 MPa. The unit relies on a fixed NBR elastomer bumper at each end for deceleration and is not a fail-safe load holder; an external rod lock or pilot-operated check valve is required to prevent drift upon air loss.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-75SB |
|---|---|
| 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 ACQJ140X200-75SB
| 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 ACQJ140X200-75SB Is Used
Heavy Press Fit Tuning
Dial in the exact extend position from 125 to 200mm on large metal stamping presses to accommodate different material thicknesses without machining new spacers.
Automotive Welding Line Changeover
Adjust the extend stop on the fly for product changeovers between vehicle variants, utilizing the M30x1.5 male rod thread for rigid fixture mounting.
Large Pallet Forming Stops
Modify the end stroke dynamically when handling oversized pallets or varying package dimensions, relying on the 1570 kgf max push to move heavy loads.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X200-75SB the Right Cylinder?
Selecting this Ø140mm bore yields 7696.9N push force at 0.5MPa, sitting between the smaller Ø125mm (6135.9N) and larger Ø160mm (10053.1N) options. If your application requires a fixed 200mm extend position without variation, a standard ACQ cylinder will suffice, but the ACQJ is necessary for adjustable 125-200mm end stops. Confirm ordering essentials: 140mm bore, 200mm full stroke, 75mm window, -S magnet, and -B male rod thread. Note that for high-speed or high-energy cycles, the fixed elastomer bumper may require supplementing with an external shock absorber.
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 ACQJ140X200-75SB FAQ
This cylinder provides 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 usable extend range is 125mm to 200mm, achieved by shortening the 200mm full stroke by up to the 75mm window. The retract stroke remains fixed at the full 200mm.
An external M27x2.0 threaded stop with a lock nut limits the extend travel, meaning the force is identical to a standard ACQ because the piston area is unchanged. The cylinder uses fixed NBR elastomer bumpers for end-of-stroke deceleration, not a braking mechanism; it will not hold a load if air pressure is lost, requiring an external rod lock for fail-safe holding. The built-in magnet works with reed or electronic solid-state switches.
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Related AirTAC ACQJ Compact Cylinders
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