
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX950-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 950mm stroke, G3/4 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 SAIJ200X950-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window between 910 and 950 mm without swapping hardware. Built to deliver massive thrust, it provides 15708 N of push force and 15080 N of pull force at 0.5 MPa, peaking at 3204 kgf under 1.0 MPa.
This unit utilizes a SUS304 stainless steel rod for superior corrosion resistance and is equipped with PT tapered ports. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches, though no magnet is installed on this specific configuration. The rear stopper screw sets the end position, but it is a travel stop and does not hold the load without live air pressure.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX950-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 950 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 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. |
|---|---|
| 200 | Bore size in mm. |
| ×950 | 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.
Dial in the exact 910 to 950 mm pressing depth during machine setup to accommodate different material thicknesses without external spacers.
Quickly adjust the end-stop position on automated lines when switching to a new product size, saving downtime on mechanical modifications.
Position heavy molds accurately using the 15708 N push force, relying on the rear adjuster to fine-tune the final resting place.
Select this 200 mm bore size when your application requires extreme force that smaller bores cannot provide, such as stepping up from a 160 mm bore that offers 10053 N push at 0.5 MPa. The 40 mm adjustment range is ideal for product changeovers, allowing operators to dial in the exact end-of-stroke position during commissioning rather than machining external stops.
For load-holding requirements without continuous air pressure, this adjustable stopper is not a lock; you should explore an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder instead. Because the 950 mm stroke is substantial, the 40 mm rod diameter and M36x2 thread provide rigidity, but an external guide is highly recommended to prevent excessive side-loading on the piston. This SAIJ model shares the ISO 15552 mounting interface and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
Quick checklist
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At its maximum 1.0 MPa pressure, it delivers up to 3204 kgf.
The rear adjuster screw lets you shorten the 950 mm nominal stroke by up to 40 mm, creating a usable travel window of 910 to 950 mm. This stopper decelerates the travel end but does not lock the load without live air pressure.
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