Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 200mm 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.
- BoreØ125 mm
- Stroke200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100
The AirTAC SAIJ125X200-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that permits a usable travel window of 100 to 200 mm. Delivering 6136 N of push force at 0.5 MPa, it handles heavy positioning tasks without requiring cylinder swaps during product changeovers. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
This model uses a PT G1/2 port and a 32 mm carbon steel rod with an M27x2 thread, providing robust resistance against side loads. The rear adjuster acts purely as a mechanical stop to set the retraction end-position and must not be confused with a lock, as it cannot hold loads without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 SAIJ125 Adjustable Cylinder SAIJ125X200-100 Is Used
Variable Product Changeover
Dial in the exact retract distance from 100 to 200 mm when switching between part lengths on a machining line, eliminating the need to swap cylinders or reposition external hard stops.
Commissioning Fine-Tuning
Use the 100 mm rear adjustment window to precisely set the end-of-stroke position during machine setup, compensating for mechanical tolerances without disassembling the fixture.
Heavy Assembly Pressing
Leverage the 6136 N push force at 0.5 MPa to seat heavy components, using the adjustable stroke to accommodate different assembly heights safely.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100 the Right Cylinder?
Choose this 125 mm bore when an 80 mm cylinder (providing 2513 N at 0.5 MPa) lacks the thrust for heavy fixtures, but a 160 mm bore is physically oversized. The 100 mm adjustment range is ideal for machines processing varying product sizes, allowing you to dial in the exact end-stop from 100 to 200 mm during commissioning rather than machining external stops. To replace an ISO 15552 cylinder, match the 200 mm stroke, 100 mm adjuster, PT G1/2 port, and standard carbon steel rod without a magnet.
Although the 32 mm rod handles high stresses, a 200 mm stroke can generate leverage; ensure your mounting choice from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2) properly supports the load. Because this is an adjustable stop and not a locking mechanism, maintain live air to hold position, or integrate an external pilot-operated check valve for safety.
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 SAIJ125 Adjustable Cylinder SAIJ125X200-100 FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 1251 kgf.
The rear adjuster allows you to shorten the effective travel from the nominal 200 mm down to 100 mm, creating a 100-200 mm usable window. It acts as a mechanical stop for end-position tuning and is not a lock, so live air is required to hold the load.
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 SAIJ125 Adjustable Cylinder SAIJ125X200-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.