Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-100SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-100SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke250 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-100SB
The ACQJ125X250-100SB is a double-acting JIS compact cylinder featuring a big-bore 125mm piston and a 250mm full stroke. An external threaded stop with a lock nut limits the extend end position, allowing you to fine-tune the usable extend range from 150mm up to 250mm directly on your machinery. The retract stroke remains completely unaffected by this adjustment.
Because the adjuster only alters travel length and not piston area, output force stays identical to a standard ACQ of this size, yielding 6135.9N push at 0.5MPa. This SB configuration includes a built-in piston magnet for position sensing and a male M30x1.5 rod-end thread coupling directly to your load. Fixed NBR elastomer bumpers absorb impact energy at both stroke ends.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-100SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-100SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 250 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 ACQJ125X250-100SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×250 | 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 ACQJ125X250-100SB Is Used
Heavy Press Tooling
Dial in the exact clamping extension on large press machinery during tooling changes, using the external stop to set the 150-250mm range without machining new spacers.
Automotive Component Fixtures
Accommodate varying part heights on automotive welding lines by tweaking the extend end position on the fly, ensuring precise placement for different chassis variants.
Large Material Lifters
Adjust the push-out distance on heavy-duty material handling lifts to account for different pallet thicknesses, relying on the 1251kgf max push capacity for robust lifting.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X250-100SB the Right Cylinder?
Selecting this 125mm bore actuator provides a substantial 6135.9N push force at 0.5MPa, sitting at the lower edge of the big-bore compact range (the next size up, 140mm, yields 7696.9N push). If your application never requires end-position variance, a fixed-stroke ACQ cylinder suffices and saves setup time. When ordering this adjustable variant, confirm the 250mm full stroke, the 100mm window, the S magnet option, 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 ACQJ125X250-100SB FAQ
This big-bore cylinder delivers 6135.9N push and 5733.8N pull at 0.5MPa, 8590.3N push at 0.7MPa, and a maximum push of 1251kgf at 1.0MPa. The adjustable window is 100mm, providing a usable extend range of 150-250mm from the 250mm full stroke.
The external M27x2.0 threaded stop with lock nut mechanically limits the extend travel without changing the piston area, so force remains identical to a standard ACQ. Deceleration is handled by fixed NBR elastomer bumpers at both ends, not an adjustable air cushion. Note that a plain cylinder does not hold its load on air loss; use an external rod lock for fail-safe holding.
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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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