Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X650-30
The AirTAC Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X650-30 is a genuine double-acting profile-type standard air cylinder with a Ø50mm bore and 650mm 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
- Stroke650 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 SAUJ50X650-30
The AirTAC SAUJ50X650-30 is a double-acting, single-rod profile cylinder with an on-site adjustable extend stroke. An external stop screw lets you trim the working stroke by up to 30 mm, giving a usable range of 620-650 mm. The extruded aluminum barrel makes it shorter than an ISO 15552 cylinder of the same bore. This 50 mm bore uses a 1/4" port and delivers 982 N push and 825 N pull at 0.5 MPa.
For sizing, the safe working load is roughly 589 N (about 60% of the 0.5 MPa push force), translating to a vertical lift capacity of about 50 kg with a 2:1 safety margin. You can pair it with FA flange or LB foot mounts, and it shares mounting compatibility with the AirTAC SC series. Note this SKU lacks a magnet, so it cannot accept CMSG or DMSG sensors.
Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X650-30 Technical Specifications
| Model | Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X650-30 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø50 mm |
| Stroke | 650 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 SAUJ50X650-30
| SAU | Profile-type standard cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×650 | 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 SAUJ50X650-30 Is Used
Adjustable Pressing Stations
Fine-tune the 30 mm extend window on-site to set exact contact pressure on varied material thicknesses without swapping cylinders.
Variable Length Diverters
Trim the extend stroke up to 30 mm to perfectly align packages of different sizes as they move down the line.
Custom Height Stops
Dial in the exact stopping position for pallets or lifts in a 620-650 mm range, adapting to new pallet designs quickly.
Is the Airtac SAUJ50 Adjustable Stroke Cylinder SAUJ50X650-30 the Right Cylinder?
When sizing this unit, look at the neighboring bores: a 40 mm bore gives 628 N push at 0.5 MPa, while a 63 mm bore offers 1559 N. This 50 mm model provides 982 N, striking a balance for medium loads. Choose the SAUJ over a fixed SAU when you need final end-position tuning on the machine without buying a new cylinder. The 30 mm adjust window is ideal for fine-tuning clamping or pressing depths. Because the 650 mm stroke is long, use external guides to prevent rod bending and side-load damage. This non-magnetic version cannot take sensors; if you need position detection, select a -S SKU. The external stop sets the end position but does not lock the load.
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 SAUJ50X650-30 FAQ
This 50 mm bore cylinder with a 1/4" port delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, 1767 N at 0.9 MPa, and a theoretical max of 200 kgf at 1.0 MPa. The nominal 650 mm extend stroke can be shortened by up to 30 mm on-site using the external stop screw, yielding a 620-650 mm usable range.
No. The stop screw only sets the end position, and the air cushion merely decelerates the piston near the end of the stroke. Neither acts as a brake. If air is lost, the piston will drift. For load holding, you must use an external rod lock or a pilot-operated check valve.
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