Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S
The AirTAC Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 700mm stroke, 1/4" air ports and adjustable end cushioning. Its hard-anodized aluminum-profile barrel is shorter than an ISO 15552 cylinder of the same bore, and it shares SC-series mounting accessories.
- BoreØ40 mm
- Stroke700 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
- 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 SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S
The AirTAC SAUJ40X700-40S is a double-acting, single-rod profile cylinder with an on-site extend-stroke adjustment window of 40 mm. You can trim the usable forward travel down from the 700 mm maximum to 660 mm via an external stop screw. It features a 1/4" port, an M12x1.25 rod thread, and a piston magnet for position sensing.
This 40 mm bore generates 628 N push and 528 N pull at 0.5 MPa, yielding a safe working load of roughly 377 N and a vertical lift capacity of about 32 kg with a 2:1 margin. The extruded aluminum profile is shorter than an ISO 15552 cylinder of the same bore. It includes 21 mm adjustable air cushions and a high-temp Viton H seal option up to 150 C.
Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S Technical Specifications
| Model | Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAU series datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G (BSPP). A high-temperature seal (0-150 °C) is available.
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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×700 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAU-family variants: SAUD (double rod), SAUJ (adjustable stroke), SAUF (with built-in solenoid valve), and SAU-S with built-in magnet. Seals: TPU (blank) / Viton H / NBR N. Sensor switches: CMSG / DMSG / EMSG.
Where the Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S Is Used
Variable Length Stopper
Acts as an adjustable end-stop on a machining line, allowing operators to dial in the 40 mm window for different material lengths.
Package Diverter Setup
Provides tunable reach on a sorting conveyor where box sizes vary, letting technicians fine-tune the extend endpoint on-site.
Adjustable Pusher Arm
Feeds products into testing cells, using the stop screw to set precise push distances without reprogramming the motion controller.
Is the Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S the Right Cylinder?
When sizing this unit, step down to a 32 mm bore for lighter loads (402 N push at 0.5 MPa) or up to a 50 mm bore for heavier tasks (982 N push). Choose this SAUJ over a fixed SAU cylinder when your machine assembly requires final end-position tuning of up to 40 mm without buying new hardware. Mounting options include Basic, FA flange, and LB foot, sharing compatibility with the AirTAC SC series. The -S suffix means a magnet is built-in for CMSG, DMSG, or EMSG sensors. Because the 700 mm stroke is long, use external guides to prevent rod bending and manage side loads.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB — same as SC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAUJ40 Adjustable Stroke Cylinder SAUJ40X700-40S FAQ
This 40 mm bore cylinder pushes 628 N and pulls 528 N at 0.5 MPa, pushes 879 N at 0.7 MPa, and 1130 N at 0.9 MPa, with a theoretical max of 128 kgf at 1.0 MPa. The external stop screw allows you to shorten the extend stroke by up to 40 mm, giving a usable forward travel of 660-700 mm.
The -S suffix indicates a built-in piston magnet for mounting CMSG, DMSG, or EMSG electronic or reed switches. Note that the stop screw only sets the end position; it is not a load lock. The cylinder will drift without live air, so use an external rod lock or pilot-operated check valve for load holding.
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