Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 125mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke125 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50SB
The AirTAC ACQJ140X125-50SB is a double-acting JIS compact cylinder featuring a big-bore 140 mm piston and an external threaded stop. A lock nut and screw mechanism on the rod-end side restricts how far the rod extends, providing a usable extend range of 75 to 125 mm from the 125 mm full stroke. The retract movement remains completely unaffected by this adjustment.
Because the adjustment mechanism limits travel length without altering the piston face area, the output force remains identical to a standard ACQ of the same bore. This model yields 7696.9 N push and 7294.8 N pull at 0.5 MPa. It includes an M30x1.5 male piston rod end for direct load coupling, a built-in magnet for position sensing, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 125 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 ACQJ140X125-50SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×125 | 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 ACQJ140X125-50SB Is Used
Heavy Press Tonnage Setup
Dialing in the exact 75 to 125 mm extend position during heavy press commissioning prevents over-travel without machining custom spacers.
Large Fixture Changeover
Shifting the extend stop by a few millimeters accommodates new product dimensions on large machining fixtures rapidly.
Big-Bore Clamp Positioning
Setting precise clamp endpoints on oversized welding arms ensures parts seat correctly before the high force is applied.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-50SB the Right Cylinder?
Selecting this 140 mm bore unit provides 7696.9 N push at 0.5 MPa. Stepping down to the 125 mm bore drops the push to 6135.9 N, while stepping up to the 160 mm bore increases it to 10053.1 N. If your machinery requires a fixed extend length that never varies, a standard ACQ cylinder without the external adjuster is sufficient. When ordering, confirm the 125 mm full stroke, the 50 mm adjuster window, the -S magnet for electronic or reed switches, and the -B male M30x1.5 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 ACQJ140X125-50SB 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 125 mm full stroke has a 50 mm adjustment window, giving a usable extend range of 75 to 125 mm. The R adjuster thread is M27x2.0.
An external threaded stop with a lock nut limits the extend stroke length only, meaning the force is identical to a standard ACQ because the piston area is unchanged. The cylinder uses fixed NBR elastomer bumpers at both ends rather than adjustable air cushions. The -S built-in magnet works with reed or electronic solid-state switches.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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