Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X20-20SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X20-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 20mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke20 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X20-20SB
The AirTAC ACQJ140X20-20SB is a double-acting JIS compact cylinder featuring a big-bore 140mm piston and an external extend-stop mechanism. A threaded rod-end screw with lock nut restricts forward travel, providing a usable extend range of 0 to 20mm out of the 20mm full stroke. The retract distance remains completely unaffected by this adjustment.
Because the piston area stays constant, output force equals a standard ACQ of this size, yielding 7696.9N push at 0.5MPa. The unit includes a male M30x1.5 rod end, PT3/8 porting, and fixed NBR elastomer bumpers. Equipped with a piston magnet (-S), it operates seamlessly with either reed or solid-state electronic switches.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X20-20SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X20-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 20 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 ACQJ140X20-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×20 | 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 ACQJ140X20-20SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 0 to 20mm pressing depth on heavy stamping machinery during initial tool setup, ensuring precise material deformation without swapping mechanical spacers.
Product Family Changeover
Rapidly reconfigure end-of-arm clamping positions on a machining line when switching between product variants, using the external stop to accommodate different part widths.
Trial End Positioning
Establish optimal forming endpoints on large welding fixtures by testing intermediate extend lengths safely before locking the nut for full production runs.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X20-20SB the Right Cylinder?
For lighter duties, the 100mm bore delivers 3927.0N push at 0.5MPa, whereas this 140mm unit provides 7696.9N. If your application strictly requires a fixed 20mm forward reach without variation, a standard ACQ cylinder is sufficient. When ordering, confirm the 140mm bore, 20mm full stroke, 20mm adjuster window, male rod thread (-B), and the integrated magnet (-S).
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 ACQJ140X20-20SB FAQ
It delivers 7696.9N push and 7294.8N pull at 0.5MPa, 10775.7N push at 0.7MPa, and a maximum push of 1570kgf at 1.0MPa. The full stroke is 20mm with a 20mm adjustment window, allowing a usable extend range of 0-20mm.
The M27x2.0 external threaded stop only limits forward travel length; it does not alter piston area, so force remains identical to a standard ACQ. Deceleration relies on fixed NBR elastomer bumpers, not an adjustable air cushion. Note that this cylinder will not hold a load on air loss without an external rod lock.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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