The AirTAC Airtac SAI ISO Cylinders SAI50X160SG is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
The AirTAC SAI50X160-S is a double-acting ISO 15552 profile cylinder with a 50 mm bore and 160 mm stroke, producing roughly 982 N on extension and 825 N on retraction at 0.5 MPa. The mid-range 160 mm stroke is a practical fit for indexing slides, fixture clamps and short-stroke pushers where travel is fixed by tooling. Because the barrel meets the ISO 15552 (ex-VDMA 24562) interface, it drops into existing layouts designed around that standard.
This unit ships with the -S magnet option, so the piston works with CMSE or DMSE reed switches slotted into the grooves on both sides of the extruded aluminium barrel - position sensing at either end or anywhere in between. The standard rod is carbon steel; if the machine sees washdown or moisture, a SUS420J2 rod build can be specified instead.
| Model | Airtac SAI ISO Cylinders SAI50X160SG |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 160 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
| 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.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×160 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
With 982 N available at 0.5 MPa, the 50 mm bore holds workpieces in drill and milling fixtures, with the front air cushion easing the clamp in rather than slamming it.
A 160 mm stroke is long enough to kick cartons or trays off a conveyor lane at mid-range speed, and the -S magnet lets a CMSE switch confirm full retract before the next part arrives.
The ISO 15552 mounting interface makes this cylinder a direct swap for worn 50 mm ISO cylinders on machine slides, gates and lifting posts without re-drilling the mounting plate.
At 982 N of push force at 0.5 MPa, this 50 mm bore sits in the middle of the SAI family: step up to a 63 mm bore (1559 N at 0.5 MPa) when the payload creeps past about 70 kg, or down to a 40 mm bore (628 N at 0.5 MPa) for lighter tooling. Keep the working load under roughly half the theoretical force so the adjustable air cushions at both ends can do their deceleration job. Remember that when air pressure drops or the valve centres, the rod free-floats - for a position that must survive pressure loss, pair the cylinder with a rod lock or move to the SAIL locked version. To match an existing ISO 15552 cylinder, confirm bore 50, stroke 160, G (BSPP) porting, the mounting accessory style and the -S magnet flag.
Quick checklist
At 0.5 MPa it delivers 982 N extending and 825 N retracting. Raise supply pressure to 0.9 MPa and extension force climbs to 1767 N; the theoretical maximum for a 50 mm bore is 200 kgf at 1.0 MPa. Size the load at no more than about half the push force so the adjustable cushions can stop the piston cleanly.
Yes. The SAI follows the ISO 15552 (ex-VDMA 24562) dimensional standard, so bore 50, 160 mm stroke, the G1/4 port and the accessory mounting holes match other cylinders built to that standard. Order the same mounting accessory (LB foot, FA/FB flange, CA/CB clevis or TC trunnion) and add -S if your original had position sensing.
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