Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50SB 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 ACQJ125X200-50SB
The ACQJ125X200-50SB is a double-acting JIS compact cylinder engineered for big-bore tasks, featuring a 125mm bore and 200mm full stroke. An external threaded stop with a lock nut restricts the extend end position, yielding a usable extend range of 150 to 200mm. Retract travel remains fixed. Because the piston area is unaltered by the adjuster, force output matches a standard ACQ exactly, yielding 6135.9N push and 5733.8N pull at 0.5MPa.
This variant includes a male M30x1.5 piston rod end (-B) for direct load coupling and a built-in magnet (-S) for position sensing. The unit integrates fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. Operating pressure spans 0.15 to 1.0MPa, and the PT3/8 port accommodates robust pneumatic supply for heavy-duty cycles.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50SB |
|---|---|
| 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 ACQJ125X200-50SB
| 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 ACQJ125X200-50SB Is Used
Heavy Press Tonnage Tuning
Dial in the exact 150-200mm extend position on a large stamping press without machining new spacers, accommodating varying material thicknesses on the fly.
Pallet Changeover Stops
Adapt automated conveyor end-stops for different pallet lengths rapidly, using the external M27x2.0 adjuster to set the precise 150-200mm extension limit.
Bending Machine Setup
Establish trial end positions for heavy-gauge metal forming, leveraging the 6135.9N push force to find the optimal bend depth before finalizing mechanical hard stops.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X200-50SB the Right Cylinder?
For 0.5MPa push requirements below this unit, the 100mm bore yields 3927.0N, while the larger 140mm bore provides 7696.9N. If your setup never requires altering the extend endpoint, a fixed-stroke ACQ cylinder provides identical power in a simpler format. When ordering this adjustable model, verify the 125mm bore, 200mm full stroke, 50mm window, the -S magnet for electronic or reed switches, and the -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 ACQJ125X200-50SB FAQ
At 0.5MPa, push force is 6135.9N and pull force is 5733.8N. At 0.7MPa, push force is 8590.3N. The maximum push force at 1.0MPa is 1251kgf. The usable extend range is 150-200mm (200mm full stroke minus up to a 50mm window).
An external M27x2.0 threaded stop with a lock nut mechanically limits the extend distance without reducing piston area, so force remains identical to a standard ACQ. The fixed NBR bumpers decelerate the load near stroke ends, but a plain ACQ-type 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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