Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-50SB 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 ACQJ140X100-50SB
The AirTAC ACQJ140X100-50SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. This allows you to fine-tune the extend stroke on the machine, creating a usable extend range of 50 to 100 mm from the 100 mm full stroke. The retract stroke remains unaffected. It includes a male rod end (M30x1.5) for direct load coupling and a built-in piston magnet (-S) for position sensing.
Because the adjuster only alters travel length and not the piston area, the output force is 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 cylinder uses a PT3/8 port, a fixed NBR elastomer bumper at each end for end-of-stroke deceleration, and an M27x2.0 external adjuster thread for precise positioning.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-50SB |
|---|---|
| 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 ACQJ140X100-50SB
| 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 ACQJ140X100-50SB Is Used
Heavy Press Fixture Tuning
Dial in the exact clamping extension on a multi-model press without machining new spacers, shortening the extend stroke by up to 50 mm directly at the machine.
Automotive Welding Line Changeover
Accommodate different chassis widths during product changeover by repositioning the external stop nut, ensuring precise weld gun positioning every time.
Large Assembly Forming Stops
Test and set trial end positions for metal bending or forming operations, allowing operators to find the optimal forming depth before locking the M27x2.0 adjuster in place.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-50SB the Right Cylinder?
When sizing this big-bore 140 mm unit, consider the next size down (bore 125) which provides 6135.9 N push at 0.5 MPa, or the larger bore 160 which yields 10053.1 N push. If your application never requires stroke adjustments or varying end positions, a fixed-stroke ACQ cylinder will suffice and simplifies setup. To order this adjustable version correctly, confirm the 140 mm bore, 100 mm full stroke, 50 mm window, the -S magnet for electronic or reed switches, and the -B male 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 ACQJ140X100-50SB FAQ
The usable extend range is 50 to 100 mm (100 mm full stroke minus the 50 mm window). It delivers 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. It features a 32 mm rod, a PT3/8 port, and an M27x2.0 adjuster thread.
No, altering the external stop only changes the extend length, leaving the piston area and force identical to a standard ACQ. The unit relies on a fixed NBR elastomer bumper at each end for deceleration, not an adjustable air cushion. Note that a plain ACQ does not hold its load on air loss; use an external rod lock for fail-safe holding.
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