Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke100 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50SB
The AirTAC ACQJ125X100-50SB represents a big-bore JIS compact cylinder with double-acting single-rod functionality. An external threaded stop and lock nut restricts the extend end position, providing a usable extend range of 50-100 mm (full 100 mm stroke minus the 50 mm window). The retract stroke remains unaffected by this adjustment. Because the piston area stays constant, force output is identical to a standard ACQ of this bore.
This large 125 mm bore variant generates 6135.9 N push and 5733.8 N pull at 0.5 MPa, peaking at 1251 kgf max push at 1.0 MPa. It features a 32 mm piston rod, PT3/8 porting, and fixed NBR elastomer bumpers at each end for deceleration. The -S magnet enables compatibility with reed or electronic solid-state switches, while the -B male M30x1.5 rod-end thread couples directly to your load.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 100 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 ACQJ125X100-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 ACQJ125X100-50SB Is Used
Heavy Press Tonnage Setup
Dial in the exact extend stop on large metal stamping presses to accommodate varying material thicknesses without machining new spacers.
Automotive Welding Changeover
Shift the extend endpoint rapidly during robotic welding line product changeovers to adapt to different vehicle chassis fixtures.
Palletizer Load Positioning
Fine-tune the downward extend stroke on end-of-arm palletizing tools to gently seat heavy containers without crushing contents.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X100-50SB the Right Cylinder?
When sizing this 125 mm bore actuator, consider the adjacent options in the big-bore compact range. Stepping down to a 100 mm bore yields 3927.0 N push at 0.5 MPa, whereas stepping up to a 140 mm bore provides 7696.9 N push at 0.5 MPa. If your machine design never requires altering the extend endpoint, a fixed-stroke ACQ cylinder will suffice. For this adjustable model, confirm your ordering essentials: 125 mm bore, 100 mm full stroke, 50 mm window, -S magnet, and -B male M30x1.5 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 ACQJ125X100-50SB FAQ
This cylinder provides 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. The usable extend range is 50-100 mm (a 50 mm window off the 100 mm full stroke). It uses an M27x2.0 external adjuster thread, a PT3/8 port, and a male M30x1.5 rod end.
The external threaded stop limits only the extend length, meaning force remains identical to a standard ACQ since the piston area is unchanged. The fixed elastomer bumper decelerates the load near stroke end but does not provide fail-safe load holding; if air is lost, the rod drifts. For secure load holding, add an external rod lock or pilot-operated check valve.
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Related AirTAC ACQJ Compact Cylinders
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