Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50
The AirTAC Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50 is a genuine double-acting profile-type standard air cylinder with a Ø50mm bore and 70mm 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.
- BoreØ50 mm
- Stroke70 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- 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 SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50
The AirTAC SAUJ50X70-50 is a double-acting, single-rod profile cylinder with an on-site extend stroke adjustment window of 50 mm. You can trim the nominal 70 mm stroke down to a 20 mm working length using the external stop screw. It features a 1/4" port, an M16x1.5 rod thread, and 21 mm adjustable air cushions at each end. The extruded aluminum profile barrel makes it shorter than an ISO 15552 cylinder of the same bore.
This 50 mm bore generates 982 N push and 825 N pull force at 0.5 MPa. A practical computed insight: the safe working load is roughly 589 N (about 60% of the 0.5 MPa push figure), allowing a vertical lift of approximately 50 kg with a 2:1 safety margin. Because this SKU lacks the -S magnet option, it cannot accept CMSG or DMSG magnetic switches. Note that the external stop sets the end position but does not lock the load; you need a pilot-operated check valve for load holding.
Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50 Technical Specifications
| Model | Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø50 mm |
| Stroke | 70 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50
| SAU | Profile-type standard cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×70 | 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 SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50 Is Used
Adjustable Clamping Press
Dial in the exact 20 to 70 mm clamping travel on-site using the stop screw to accommodate varying material thicknesses without swapping cylinders.
Variable Depth Insertion
Set the extend end-position precisely for pushing components into housings, allowing quick changes between product variants on the same line.
Tunable Forming Station
Trim the extend stroke by up to 50 mm to adjust the stroke depth for different package sizes, relying on the 982 N push force at 0.5 MPa.
Is the Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50 the Right Cylinder?
When sizing this actuator, look at neighboring bores: a 40 mm bore yields 628 N push at 0.5 MPa, while a 63 mm bore provides 1559 N. Choose the SAUJ50X70-50 when your machine needs precise field stroke tuning within the 20 to 70 mm range, which is far more efficient than machining external stops for a fixed SAU cylinder. It supports Basic, FA flange, and LB foot mounts, sharing mounting compatibility with the AirTAC SC series. Since this non-S SKU lacks a magnet, position sensing is impossible. For any stroke length, ensure external guides handle side loads to prevent piston binding.
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 SAUJ50 Adjustable Stroke Cylinder SAUJ50X70-50 FAQ
At 0.5 MPa it provides 982 N push and 825 N pull force. Push rises to 1374 N at 0.7 MPa and 1767 N at 0.9 MPa, with a theoretical max of 200 kgf at 1.0 MPa. The nominal 70 mm extend stroke can be shortened by up to 50 mm on-site via the external stop screw, yielding a usable 20 to 70 mm range. It uses a 1/4" port and 21 mm adjustable air cushions.
No. The external stop screw only sets the extend end position; it is not a load lock. If air is lost or the valve is centered, the piston will drift, and the 21 mm air cushion merely decelerates the stroke near the end. For secure load holding, you must add an external rod lock or a pilot-operated check valve.
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