Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-20SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-20SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 300mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke300 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-20SB
The AirTAC ACQJ140X300-20SB is a double-acting JIS compact cylinder featuring an external extend stop. A threaded adjuster with an M27x2.0 thread and lock nut lets you trim the outward stroke from 280 to 300 mm directly on the machine. The return stroke remains completely unaffected by this mechanism.
Because the piston area stays constant, output force equals a standard ACQ of the same bore, delivering 7696.9 N push at 0.5 MPa. This big-bore variant uses a PT3/8 port and a male M30x1.5 rod end. Fixed NBR elastomer bumpers absorb impact at both ends, while the integrated magnet supports reed or solid-state sensors.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-20SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-20SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 300 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 ACQJ140X300-20SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×300 | 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 ACQJ140X300-20SB Is Used
Heavy Press Setup
Dial in the exact 280 to 300 mm extend reach on a large stamping press during initial tool setup without machining custom spacers.
Product Changeover
Quickly alter the extended end position on an automotive assembly line fixture when switching between different chassis variants.
Packaging Positioning
Fine-tune the pusher depth on a heavy-duty palletizer to accommodate varying pallet or load heights precisely.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X300-20SB the Right Cylinder?
Choosing this 140 mm bore provides 7696.9 N push and 7294.8 N pull at 0.5 MPa. Stepping down to a 125 mm bore drops the push to 6135.9 N, whereas a 160 mm bore raises it to 10053.1 N. If your application never requires end-position trimming, a fixed-stroke ACQ cylinder will suffice. When ordering this adjustable version, confirm the 300 mm full stroke, 20 mm window, S magnet, and 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 ACQJ140X300-20SB FAQ
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. The full stroke is 300 mm, and the external adjuster allows an extend range of 280 to 300 mm (a 20 mm window).
No, the adjuster only limits the extend length, so force remains identical to a standard ACQ. The retract stroke is unaffected. It uses fixed elastomer bumpers rather than adjustable air cushions, and the -S magnet works with reed or electronic switches.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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