Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 200mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke200 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20SB
The AirTAC ACQJ125X200-20SB is a double-acting, big-bore JIS compact cylinder featuring an external extend-stop mechanism. An M27x2.0 threaded adjuster with a lock nut permits you to fine-tune the extend end position anywhere within a 180-200 mm usable range, all without swapping parts. The retract stroke remains completely unaffected by this adjustment.
Because the internal piston area stays constant, output force equals that of a standard ACQ, delivering 6135.9 N push and 5733.8 N pull at 0.5 MPa. This unit includes a male M30x1.5 piston rod end for direct load coupling, an integrated magnet for position sensing, and NBR elastomer bumpers at both ends to absorb impact energy.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 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 (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 ACQJ125X200-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | 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 ACQJ125X200-20SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 180-200 mm extend endpoint on a multi-ton metal stamping press to accommodate varying material thicknesses without machining new spacers.
Large Assembly Jig Changeover
Adapt automated automotive assembly jigs for different chassis configurations by rapidly repositioning the external rod-end stop along the 20 mm window.
Industrial Pallet Positioning
Adjust the extend stroke on a heavy-duty palletizing machine to gently push varying load dimensions to a precise transfer location without reprogramming the controller.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-20SB the Right Cylinder?
Selecting this Ø125 mm bore yields 8590.3 N of push force at 0.7 MPa and a maximum push capacity of 1251 kgf at 1.0 MPa. Stepping down to a Ø100 bore drops the 0.5 MPa push output to 3927.0 N, while stepping up to a Ø160 bore raises it to 10053.1 N. If your application never requires altering the extend endpoint, a fixed-stroke ACQ cylinder will suffice. When ordering, verify the 200 mm full stroke, the 20 mm adjuster 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 ACQJ125X200-20SB FAQ
It 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 180-200 mm, achieved by shortening the 200 mm full stroke up to 20 mm.
The M27x2.0 external threaded stop and lock nut limit how far the rod extends, changing only the stroke length, not the piston area, so force remains identical to a standard ACQ. Fixed NBR bumpers decelerate the load near stroke ends, but a plain 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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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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