Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-75SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-75SB 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 ACQJ140X100-75SB
The AirTAC ACQJ140X100-75SB is a big-bore JIS compact pneumatic cylinder featuring a double-acting single rod and an external extend-stop mechanism. An external M27x2.0 threaded adjuster paired with a lock nut lets you dial in the extend end position directly on your equipment. With a full stroke of 100 mm and a 75 mm adjustment window, the usable extend range spans 25 mm to 100 mm. The retract stroke remains completely unaffected by this modification.
Because the adjustment mechanism only limits travel length and leaves piston area untouched, output force remains identical to a standard ACQ of this bore. At 0.5 MPa, it generates 7696.9 N of push force and 7294.8 N of pull force. The unit is equipped with a male M30x1.5 rod thread for direct load coupling, a PT3/8 port, and a built-in piston magnet (-S) compatible with both reed and solid-state electronic switches. Deceleration is handled by fixed NBR elastomer bumpers at both ends rather than adjustable air cushions.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-75SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-75SB |
|---|---|
| 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 ACQJ140X100-75SB
| 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 ACQJ140X100-75SB Is Used
Heavy Press Changeovers
Adapt large stamping or press lines rapidly. The adjustable 25-100 mm extend window lets operators set new material stops without machining custom spacers or ordering new cylinders.
Large Fixture Positioning
Dial in exact clamping depths on oversized machining fixtures. The male M30x1.5 rod end secures heavy tooling while the external stop provides repeatable fine-tuning on the factory floor.
Pallet Lift Stations
Modify lift heights for different pallet sizes on the fly. The 7696.9 N push force @0.5 MPa handles substantial loads, while the lock nut secures the adjusted position against vibration.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-75SB the Right Cylinder?
When sizing this 140 mm bore actuator, consider the neighbouring options: the 125 mm bore yields 6135.9 N push @0.5 MPa, while the 160 mm bore provides 10053.1 N push @0.5 MPa. Choose this model if your fixture requires heavy thrust plus variable extend endpoints during product changeovers. If your end position never varies, a fixed-stroke ACQ cylinder is simpler and suffices. To order, confirm the 140 mm bore, 100 mm full stroke, 75 mm window, the -S magnet for sensor tracking, and the -B male rod thread. For high-speed cycling, add an external shock absorber since the fixed bumper only decelerates near stroke end.
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 ACQJ140X100-75SB FAQ
It provides 7696.9 N push and 7294.8 N pull @0.5 MPa, 10775.7 N push @0.7 MPa, and a maximum push of 1570 kgf @1.0 MPa. The full stroke is 100 mm with a 75 mm window, yielding a usable extend range of 25-100 mm. The retract stroke remains fixed at the full 100 mm.
An external M27x2.0 threaded stop with a lock nut limits the extend travel, allowing on-machine endpoint tuning without changing parts. Force is identical to a standard ACQ because the piston area is unchanged. Deceleration relies on fixed NBR elastomer bumpers, not adjustable air cushions. Note that a plain ACQ-type cylinder will not hold its load on air loss; use an external rod lock for fail-safe holding.
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Related AirTAC ACQJ Compact Cylinders
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