Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke175 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B
The ACQJ40X175-30B is a double-acting JIS compact cylinder featuring a 175mm extended stroke and a male M14x1.5 piston rod for direct load coupling. An external M12x1.25 threaded stop and lock nut restricts the extend end position, providing a usable forward travel range of 145 to 175mm. Retract movement remains fixed at the full length. This variant is a made-to-order long-stroke unit, exceeding the standard 100mm maximum for this 40mm bore.
Because the adjuster solely limits travel without altering piston area, output effort matches a standard ACQ. At 0.5 MPa it yields 628.3N push and 527.8N pull. The body incorporates sensor grooves for reed or solid-state switches, though this specific SKU ships without a magnet. Fixed NBR elastomer bumpers absorb end-of-stroke impact, and air connections use a PT1/8 port.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 175 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| 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 | M8×1.25 (F) / M14×1.5 (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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC machining center during setup, allowing operators to shorten the extend stroke by up to 30mm without swapping hardware.
Packaging Changeover
Adapt product pusher end points rapidly on a packaging line when switching carton sizes, relying on the external stop to set the precise 145 to 175mm forward position.
Assembly Press Positioning
Establish trial end positions for pressing components on an automated assembly line, fine-tuning the contact depth on the fly before finalizing the mechanical setup.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B the Right Cylinder?
When sizing this actuator, consider the neighbouring bores: a 32mm bore provides 402.1N push at 0.5 MPa, while a 50mm bore offers 981.8N. This 40mm unit delivers 628.3N push and 879.6N at 0.7 MPa, with a maximum push capacity of 128kgf at 1.0 MPa. If your application never requires end-position tuning, a fixed-stroke ACQ cylinder suffices. To order this adjustable version, confirm the 40mm bore, 175mm full stroke, 30mm window, male rod thread, and note that a magnet is omitted.
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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-30B FAQ
This 40mm bore cylinder delivers 628.3N push and 527.8N pull at 0.5 MPa, 879.6N push at 0.7 MPa, and a maximum push of 128kgf at 1.0 MPa. The usable extend range is 145 to 175mm, achieved by shortening the 175mm full stroke by up to the 30mm window.
The external M12x1.25 threaded stop with lock nut mechanically limits the extend distance, meaning force remains identical to a standard ACQ because piston area is unchanged. Fixed NBR bumpers decelerate the rod near travel ends, but the cylinder will drift on air loss; use an external rod lock or pilot-operated check valve for fail-safe load holding.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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