Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50SB
The AirTAC ACQJ125X175-50SB is a double-acting JIS compact cylinder featuring a 125 mm bore and a male-thread piston rod end (M30x1.5) for direct load coupling. An external M27x2.0 threaded stop with a lock nut limits the extend travel, providing a usable extension range of 125 to 175 mm without changing parts. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force matches a standard ACQ of this size, delivering 6135.9 N push and 5733.8 N pull at 0.5 MPa. The unit integrates fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration and includes a piston magnet (-S) for tracking with reed or electronic solid-state switches. Operating pressure spans 0.15 to 1.0 MPa, with a speed range of 30-500 mm/s.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 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 ACQJ125X175-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | 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 ACQJ125X175-50SB Is Used
Heavy Press Tooling Setup
Fine-tune the 125-175 mm extend position on large stamping presses to accommodate varying die heights without machining custom spacers.
Automated Welding Changeover
Adjust the end stop quickly during product family changeovers on automotive welding fixtures to set precise manipulator reach.
Large Material Clamp Prototyping
Dial in the exact clamping extension during initial machine commissioning on heavy-duty woodworking or metal clamping stations.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-50SB the Right Cylinder?
When sizing this 125 mm bore, stepping down to a 100 mm bore yields 3927.0 N push at 0.5 MPa, while stepping up to a 140 mm bore provides 7696.9 N push at 0.5 MPa. If your application never requires end-position tuning, a fixed-stroke ACQ cylinder is sufficient. To order, confirm the 125 mm bore, 175 mm full stroke, 50 mm adjustment window, the -S magnet for sensors, and the -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 ACQJ125X175-50SB FAQ
The usable extend range is 125 to 175 mm (full 175 mm stroke minus the 50 mm window). Force is identical to a standard ACQ: 6135.9 N push and 5733.8 N pull at 0.5 MPa, 8590.3 N push at 0.7 MPa, and a maximum push of 1251 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa.
An external M27x2.0 threaded stop with a lock nut mechanically limits the extend stroke, shortening it without altering piston area or force. The cylinder uses fixed NBR elastomer bumpers, not adjustable air cushions. It will not hold a load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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1-Year Warranty
Covers non-human-caused product damage.
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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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