Airtac BSED Clamping Double Acting Cylinder BSED125X1000
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X1000 combines a double-rod ISO 15552 cylinder — a Ø32mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 8600 N in either direction if air is lost. Ø125mm bore, 1000mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke1000 mm
- Static holding force8600 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED125X1000
The AirTAC BSED125X1000 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 1000 mm stroke and an integrated spring-applied, air-released rod lock. A rod exits both ends, delivering equal drive force of 5734 N each way at 0.5 MPa and 8028 N at 0.7 MPa. The fail-safe collet lock provides a bidirectional static holding force of 8600 N without requiring live air.
This 125 mm bore unit uses a PT1/2 cylinder port and a separate G1/8 lock-release port. It features a 32 mm rod with an M27x2 thread and 40 mm adjustable air cushions at both ends. Note that this specific SKU lacks a magnet, so it does not support CMSE or DMSE position sensors.
Double Rod + 8600 N Rod Lock (Ø125mm)
A rod exits both ends for symmetric force and back-rod tooling, and a spring clamps the collet so the Airtac BSED Clamping Double Acting Cylinder BSED125X1000 holds its position in both directions on air loss or E-stop. Apply 0.15–0.7 MPa to the G1/8 release port to unlock. Engage only after the rod has stopped (not a dynamic brake), and release only when both piston sides are pressure-balanced; allow ≥0.5 s for full release.
Airtac BSED Clamping Double Acting Cylinder BSED125X1000 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X1000 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 mm |
| Static holding force | 8600 N |
| Cylinder port | PT1/2 |
| Lock-release port | G1/8 |
| Configuration | Double rod, double acting |
|---|---|
| Operating pressure | 0.15 – 0.7 MPa |
| Unlocking pressure | 0.15 – 0.7 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC BSED datasheet. Rod thread M27×2 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø125mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 5734 N |
| 0.7 MPa (max) | 8027 N |
| Max drive (@0.7 MPa) | 819 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 8600 N static lock holding force. Size with a safety margin.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED125X1000
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×1000 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Thread: PT (blank) / G. Mounting (BSED): Basic, LB, FA, TC. Related: SED (double rod, no lock), BSE (single-rod rod lock). Sensors CMSE/DMSE fit magnetic BSED.
Where the Airtac BSED Clamping Double Acting Cylinder BSED125X1000 Is Used
Heavy Vertical Lifts
Holds heavy vertical platens securely with 8600 N of fail-safe force during air loss, while the double-rod design ensures equal 8028 N drive force for smooth up and down motion.
Large Press Indexing
Provides symmetric push and pull for large press fixtures, using the rear rod for anti-rotation and the integrated collet lock to freeze the 1000 mm stroke position precisely.
Pallet Stopper Arms
Acts as a robust stopper for heavy pallets, engaging the spring-applied lock to hold the load statically without live air, preventing drift on the production line.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X1000 the Right Cylinder?
Select this 125 mm bore model when your application demands symmetric force up to 819 kgf alongside an 8600 N fail-safe hold. If your load requires less force, the adjacent 100 mm bore provides 3681 N at 0.5 MPa and a 5500 N hold; since 125 mm is the largest available bore, there is no larger standard option. Always verify your static load is 8600 N or below.
Engage the lock only after the rod completely stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds. Because the 1000 mm stroke is long, use an external guide rail to prevent side-load damage to the rod seals. The mounting set is limited to Basic, LB, FA, and TC.
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 8600 N?
- ✓ Back-rod space for tooling/flag
- ✓ Lock engaged only when stopped
- ✓ G1/8 release-air line available
Installation & Safety Notes
- check Engage the lock only after the rod has stopped — not a dynamic brake.
- check Release only when both piston sides are pressure-balanced.
- check Allow ≥0.5 s for full release before commanding motion.
- check Feed the G1/8 release port with 0.15–0.7 MPa clean air.
- check Support both rod ends; avoid side load.
- check Use BSED mounting (Basic/LB/FA/TC).
Airtac BSED Clamping Double Acting Cylinder BSED125X1000 FAQ
The double-rod design provides equal drive force in both directions: 5734 N at 0.5 MPa and 8028 N at 0.7 MPa, with a maximum drive force of 819 kgf. The integrated fail-safe rod lock provides a separate bidirectional static holding force of 8600 N with no live air required.
The lock is spring-applied and air-released via the G1/8 port. Engage it only after the rod stops moving, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds. It is a static holding device, not a dynamic brake, so safety-rated controls are recommended for man-rated or overhead loads.
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