Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-40SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-40SB 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 ACQJ140X125-40SB
The ACQJ140X125-40SB is a double-acting, big-bore JIS compact cylinder featuring an external threaded stop and lock nut that limits the EXTEND end position. You can fine-tune the usable extend range from 85 mm up to the full 125 mm directly on your machinery without swapping components. The RETRACT stroke remains completely unaffected by this adjustment. A standard M27x2.0 adjuster thread governs the extend limit.
Because the piston area stays constant, the force output is identical to a standard ACQ of this bore size, delivering 7696.9 N push and 7294.8 N pull at 0.5 MPa. This variant includes a male M30x1.5 piston rod end for direct load coupling and a built-in magnet (-S) for position sensing. It relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion, and operates within a 0.15-1.0 MPa pressure range.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-40SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-40SB |
|---|---|
| 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 ACQJ140X125-40SB
| 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 ACQJ140X125-40SB Is Used
Press Tonnage Calibration
Dial in the exact 85 to 125 mm extend reach during press setup to test different material thicknesses without machining new spacer blocks.
Heavy Fixture Changeover
Adapt large automotive welding clamp positions rapidly on the assembly line by turning the external stop to meet new part geometry.
Pallet Lift Height Probing
Establish trial end positions for heavy pallet lifting stations, allowing operators to lower the extend stop by 40 mm for shorter tier heights.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X125-40SB the Right Cylinder?
When sizing this big-bore compact unit, consider the Ø125 option which yields 6135.9 N push at 0.5 MPa, or step up to the Ø160 model providing 10053.1 N push. If your application requires a fixed 125 mm extend depth with no on-machine variance, a standard ACQ series cylinder will suffice. To order this adjustable version correctly, confirm the 140 mm bore, 125 mm full stroke, 40 mm adjustment 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 ACQJ140X125-40SB FAQ
This 140 mm bore cylinder has a usable extend range of 85-125 mm (125 mm full stroke minus the 40 mm window). It generates 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 RETRACT stroke is unaffected by the extend adjuster.
The external M27x2.0 threaded stop with lock nut physically limits how far the rod extends, shortening the stroke length only. It does not alter the piston area, so the force remains identical to a standard ACQ. Deceleration is handled by a fixed NBR elastomer bumper, not an adjustable air cushion, and the -S magnet works with reed or solid-state switches.
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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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