Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 150mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke150 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-50SB
The AirTAC ACQJ125X150-50SB is a double-acting, big-bore JIS compact cylinder featuring an external threaded stop with a lock nut that limits the EXTEND end position. You can fine-tune the extend stroke on the machine without swapping parts. The usable extend range is 100-150 mm (the 150 mm full stroke minus up to a 50 mm window), while the RETRACT stroke remains completely unaffected. Because the piston area stays the same, the output force is identical to a standard ACQ of this bore.
This unit includes a male-thread piston rod end (M30x1.5) for direct load coupling and an M27x2.0 adjuster thread. It generates 6135.9 N push and 5733.8 N pull force at 0.5 MPa, and 8590.3 N push at 0.7 MPa. The body uses fixed elastomer bumpers at each end rather than adjustable air cushions, and the built-in magnet (-S) works with reed or electronic solid-state switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 150 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 ACQJ125X150-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 ACQJ125X150-50SB Is Used
Heavy Press Tooling Changeover
Adapt large stamping presses to new material thicknesses by dialing the extend stop back from 150 mm to 100 mm, avoiding custom spacer fabrication.
Large Assembly Fixture Positioning
Securely hold and position heavy automotive components using the M30x1.5 male rod thread while fine-tuning the end stop to test optimal clamping reach.
Industrial Pallet Forming Stops
Set precise extend endpoints up to 150 mm for varying pallet sizes on automated packaging lines, relying on the fixed elastomer bumper to absorb high kinetic energy.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X150-50SB the Right Cylinder?
When sizing this big-bore 125 mm cylinder, compare its 6135.9 N push at 0.5 MPa against the neighbouring 100 mm bore (3927.0 N) and 140 mm bore (7696.9 N) to match your load. If your machinery requires a fixed extend position every cycle with zero variation, a standard ACQ cylinder will suffice. However, if you need 100-150 mm of adjustable extend travel for product changeovers, this ACQJ variant is the correct choice. Confirm your ordering essentials: 125 mm bore, 150 mm full stroke, 50 mm window, magnet (-S), and male rod thread (-B).
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 ACQJ125X150-50SB FAQ
This model generates 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 full stroke is 150 mm with a 50 mm window, allowing an adjustable extend range of 100-150 mm.
The external M27x2.0 threaded stop with a lock nut limits only the extend stroke length, meaning force remains identical to a standard ACQ because the piston area is unchanged. The cylinder uses fixed elastomer bumpers for end-of-stroke deceleration. Note that a plain compact cylinder does not hold its load on air loss; for fail-safe holding, install an external rod lock or pilot-operated check valve.
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Related AirTAC ACQJ Compact Cylinders
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