Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-40SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 40mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke40 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 ACQJ140X40-40SB
The AirTAC ACQJ140X40-40SB is a double-acting JIS compact cylinder engineered for big-bore tasks, featuring an external threaded stop and lock nut that limits the extend end position. With a full stroke of 40 mm and a 40 mm adjustment window, you can fine-tune the usable extend range from 0 to 40 mm directly on your machinery. The retract stroke remains completely unaffected by this mechanism. A male M30x1.5 rod-end thread (-B) couples directly to your load, while the PT3/8 port handles pneumatic supply.
Because the internal piston area stays constant, output force is identical to a standard ACQ of this bore. At 0.5 MPa, it delivers 7696.9 N of push force and 7294.8 N of pull force, peaking at a 1570 kgf maximum push at 1.0 MPa. The integrated magnet (-S) pairs with reed or electronic solid-state switches, and fixed NBR elastomer bumpers absorb impact at both ends without requiring adjustable air cushions.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-40SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 40 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 ACQJ140X40-40SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×40 | 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 ACQJ140X40-40SB Is Used
Heavy Press Tonnage Setup
Dial in the exact 0 to 40 mm extend position during heavy press changeovers without machining new spacer blocks or swapping cylinders.
Large Fixture Positioning
Fine-tune the forward clamp location on large machining fixtures to accommodate varying part dimensions directly on the machine.
Assembly Press Trial
Establish the precise bottoming-out height on automated assembly presses during prototype runs, relying on the 1570 kgf max push to seat components.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X40-40SB the Right Cylinder?
When sizing this 140 mm bore unit, consider the neighboring bore sizes for your force requirements. Dropping to a 125 mm bore yields 6135.9 N push at 0.5 MPa, whereas stepping up to a 160 mm bore provides 10053.1 N push. If your application never requires end-position adjustments, a fixed-stroke ACQ cylinder provides the same holding power in a simpler package. To order this adjustable variant, confirm the 140 mm bore, 40 mm full stroke, 40 mm window, the -S magnet for sensing, 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 ACQJ140X40-40SB FAQ
This cylinder provides 7696.9 N push and 7294.8 N pull at 0.5 MPa, and 10775.7 N push at 0.7 MPa. The maximum push is 1570 kgf at 1.0 MPa. The full stroke is 40 mm with a 40 mm adjustable window, allowing a usable extend range of 0 to 40 mm.
The external M27x2.0 threaded stop with lock nut limits only the extend length, leaving retract unaffected and keeping force identical to a standard ACQ. Deceleration relies on fixed NBR elastomer bumpers, not adjustable air cushions. Note that a plain compact cylinder does not hold its load on air loss; for fail-safe holding, install an external rod lock or pilot-operated check valve.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Related AirTAC ACQJ Compact Cylinders
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