Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S
The AirTAC SAIJ100X250-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N of push force at 0.5 MPa and features a 50mm adjustment range, creating a usable travel window of 200-250mm for precise end-position tuning. The carbon steel piston rod uses an M20x1.5 thread, and the extruded aluminum barrel includes sensor grooves on both sides.
This model includes a position magnet (-S) for use with AirTAC CMSE reed and DMSE electronic solid-state sensors. The rear adjuster acts purely as a mechanical stop to trim the stroke during commissioning without adding external stops; it does not lock the load, so maintaining position without live air requires a SAIL or BSAI variant. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 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.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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.
Where the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S Is Used
Product Changeover
Dial in the 200-250mm travel window on packaging lines to accommodate varying carton sizes without physically replacing the cylinder.
Machine Setup
Fine-tune the end-stop position during initial commissioning to perfect the pressing force without machining external spacers.
Variable End Stops
Use the 50mm adjustment range to alter the resting position of tooling on an assembly line for different batch requirements.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S the Right Cylinder?
Selecting this 100mm bore provides 3927N of thrust at 0.5 MPa; stepping down to an 80mm bore yields 2513N, while moving up to 125mm offers 6136N. The 50mm adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, negating the need to physically swap a fixed-stroke SAI cylinder. Configuration includes a 250mm stroke, 50mm adjustment, PT G1/2 tapered ports, and a -S magnet.
Because the 250mm stroke is under the 300mm side-load threshold, standard mounting is usually sufficient, though long unsupported loads should still use an external guide. For load-holding without continuous air pressure, the rear adjuster and air cushions are insufficient—consider an external pilot-operated check valve or a BSAI clamp-lock cylinder instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/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/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S FAQ
At a 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. It can reach up to 7068N of push force at 0.9 MPa.
The rear adjuster screw allows you to mechanically shorten the 250mm nominal stroke by up to 50mm, providing a usable travel window of 200-250mm. This stopper trims the end position but does not hold the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.