Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke90 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50S
The AirTAC ACQJ40X90-50S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 40 mm up to the full 90 mm directly on your equipment, while the retract stroke remains completely unaffected.
Because the piston area is unchanged, output force is identical to a standard ACQ of this bore, delivering 628.3 N push at 0.5 MPa. The body features a fixed NBR elastomer bumper at each end and integrated magnetic-switch grooves for position sensing. It uses a PT1/8 port and a 16 mm rod with an M8x1.25 female rod-end thread.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 90 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 ACQJ40X90-50S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 ACQJ40X90-50S Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC lathe during setup, shortening the extend stroke by up to 50 mm to accommodate different raw material lengths without swapping hardware.
Packaging Changeover
Adapt sealing head height rapidly on a packaging line when switching between varying carton profiles, using the external stop to set the precise 40 to 90 mm extension depth.
Assembly Press Positioning
Establish trial end positions for pressing bearings on an automated assembly line, allowing operators to tweak the extend limit on the fly via the M12x1.25 adjuster thread.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50S the Right Cylinder?
When sizing this 40 mm bore actuator, stepping down to a 32 mm bore yields 402.1 N push, whereas moving up to a 50 mm bore provides 981.8 N at 0.5 MPa. If your equipment never requires end-position adjustments, a fixed-stroke ACQ cylinder will accomplish the same work. To order this adjustable version correctly, confirm the 40 mm bore, 90 mm full stroke, 50 mm window, the S magnet option, and your required 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-50S FAQ
It delivers 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The usable extend range is 40 to 90 mm, created by a 50 mm adjustment window subtracted from the 90 mm full stroke.
The external threaded stop with a lock nut limits only the extend length, leaving retract stroke and output force unchanged. Deceleration relies on a fixed elastomer bumper rather than an adjustable air cushion. The included S magnet works with both reed and electronic solid-state switches for position detection.
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.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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