Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke250 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50S
The AirTAC ACQJ140X250-50S is a double-acting, JIS compact cylinder engineered with an external extend stop mechanism. An external threaded adjuster (M27x2.0) paired with a lock nut restricts how far the rod travels forward, providing a usable extend range of 200-250 mm from the 250 mm full stroke. The retract distance remains completely unaffected by this adjustment. Built-in magnetic bands accommodate reed or electronic solid-state switches.
Because the internal piston area is unaltered, the output force matches a standard ACQ exactly, yielding 7696.9 N push and 7294.8 N pull at 0.5 MPa, with a maximum push capacity of 1570 kgf at 1.0 MPa. The unit relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than adjustable air cushions. Operating pressure spans 0.15-1.0 MPa, and the PT3/8 porting mates to a 32 mm piston rod.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 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 (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 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 ACQJ140X250-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | 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 ACQJ140X250-50S Is Used
Press Tonnage Calibration
Dial in the exact 200-250 mm extend stop during press setup to test varying material thicknesses without machining new spacer blocks.
Automotive Welding Line Changeover
Quickly reposition the external lock nut to alter the extend end position when switching between different vehicle chassis fixtures.
Heavy Palletizing Probes
Fine-tune the forward reach on the fly to accommodate varying pallet dimensions while maintaining the full 250 mm return stroke.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-50S the Right Cylinder?
When sizing this big-bore 140 mm unit, the adjacent 125 mm bore yields 6135.9 N push at 0.5 MPa, while the 160 mm bore provides 10053.1 N push at 0.5 MPa. Select this specific 140 mm model when your application requires up to 1570 kgf of maximum thrust within a 200-250 mm adjustable forward travel window. If your end-position requirement is fixed and never varies, a standard ACQ cylinder without the external stop is sufficient. For ordering, confirm the 140 mm bore, 250 mm full stroke, 50 mm adjuster window, the -S magnet option, and the default female M22x2.5 rod-end 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 ACQJ140X250-50S FAQ
This cylinder generates 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a maximum push of 1570 kgf at 1.0 MPa. The usable extend range is 200-250 mm, governed by the 50 mm adjustment window.
No, the adjuster only limits the forward stroke length, meaning the force remains identical to a standard ACQ of the same bore. The cylinder uses fixed NBR elastomer bumpers at each end for deceleration, and the -S magnet option supports both reed and solid-state switches.
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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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