Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-40S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-40S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke100 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-40S
The AirTAC ACQJ140X100-40S is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend stroke anywhere from 60 mm up to the full 100 mm directly on your machinery, while the retract stroke remains completely unaffected. This big-bore variant handles strokes up to 300 mm and operates efficiently between 0.15 and 1.0 MPa.
Because the adjuster only alters travel length and not the piston area, the output force stays identical to a standard ACQ of the same bore, delivering 7696.9 N push at 0.5 MPa. The Ø32 mm rod uses an M27x2.0 adjuster thread, and the body integrates fixed NBR elastomer bumpers at each end rather than adjustable pneumatic cushions. Equipped with a built-in magnet (-S), it supports both reed and solid-state electronic switches via its dedicated sensor grooves.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-40S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-40S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 100 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 ACQJ140X100-40S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×100 | 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 ACQJ140X100-40S Is Used
Press Tooling Changeover
Dial in the exact 60 to 100 mm extend position during a product line changeover on a large press without machining new spacer blocks.
Heavy Fixture Positioning
Adapt the end stop on the fly for varying workpiece heights in automated welding fixtures, leveraging the 1570 kgf max push capacity.
Bending Machine Trial Stops
Safely test and set intermediate material bend depths on heavy-duty metal-forming equipment before locking down the external nut.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-40S the Right Cylinder?
When sizing this model, consider the adjacent bores in the big-bore compact range: the ACQJ125 provides 6135.9 N push, while the ACQJ160 yields 10053.1 N at 0.5 MPa. If your application never requires end-position shifts after the initial setup, a fixed-stroke ACQ cylinder will suffice. To order correctly, confirm the 140 mm bore, 100 mm full stroke, 40 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 ACQJ140X100-40S FAQ
It provides 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 60-100 mm (a 100 mm full stroke minus up to a 40 mm window), while the retract stroke remains fixed.
No, the output force remains identical to a standard ACQ because the piston area is unchanged; the external M27x2.0 threaded stop only limits travel length. Deceleration is handled by fixed NBR elastomer bumpers at each end, not adjustable air cushions, so external shock absorbers are recommended for high-speed or high-energy loads.
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Related AirTAC ACQJ Compact Cylinders
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