Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke50 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 ACQJ140X50-30SB
The AirTAC ACQJ140X50-30SB is a double-acting, single-rod JIS compact cylinder engineered for big-bore applications up to 300mm stroke. It features an external M27x2.0 threaded stop with a lock nut on the extend side, allowing you to fine-tune the extend end position directly on the machine. With a 50mm full stroke and a 30mm adjustment window, the usable extend range spans 20-50mm, while the retract stroke remains completely unaffected. The piston rod has a 32mm diameter and terminates in an M30x1.5 male thread (-B) for direct load coupling. A built-in piston magnet (-S) enables position sensing across both reed and solid-state electronic switches.
Because the internal piston area is unchanged, the output force is identical to a standard ACQ of this bore, delivering 7696.9N push and 7294.8N pull at 0.5MPa, with a maximum push capacity of 1570kgf at 1.0MPa. The cylinder relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. Operating pressure ranges from 0.15 to 1.0MPa, and the PT3/8 port ensures robust airflow for heavy-duty cycles.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 50 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 ACQJ140X50-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×50 | 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 ACQJ140X50-30SB Is Used
Heavy Press Tonnage Setup
Dial in the exact extend end position on a 140mm bore metal stamping press to accommodate varying material thicknesses without machining new spacer blocks.
Automotive Welding Line Changeover
Quickly reposition the extend stop within the 20-50mm usable range during product changeover to locate welding fixtures accurately on the assembly line.
Palletizer Trial End Positions
Test different extend endpoints for a large-case palletizing robot to find the optimal push distance before finalizing the mechanical layout.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X50-30SB the Right Cylinder?
When sizing this 140mm bore model, consider the neighbouring bore options: the 125mm bore yields 6135.9N push, and the 160mm bore yields 10053.1N push at 0.5MPa. If your application requires a fixed 50mm extend stop without on-the-fly adjustments, a standard ACQ140X50 cylinder would suffice. To order, confirm the 140mm bore, 50mm full stroke, 30mm adjustment window, the -S magnet requirement, and the -B male rod thread. Note that a plain ACQ-type cylinder will not hold its load on air loss; for fail-safe holding, specify an external rod lock or pilot-operated check valve.
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 ACQJ140X50-30SB FAQ
The usable extend range is 20-50mm (a 50mm full stroke shortened by up to a 30mm window). The force equals a standard ACQ of this bore: 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.
An external M27x2.0 threaded stop with a lock nut limits the extend stroke length only, meaning the output force remains unchanged. The cylinder uses a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion, so for high-energy cycles you may need an external shock absorber.
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Related AirTAC ACQJ Compact Cylinders
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