Airtac BSED Clamping Double Acting Cylinder BSED125X100
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X100 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, 100mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke100 mm
- Static holding force8600 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED125X100
The AirTAC BSED125X100 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal force and speed in both directions—5734 N each way at 0.5 MPa and 8028 N at 0.7 MPa. The rear rod is ideal for carrying tooling or flags and helps resist rotation.
This unit delivers a massive 8600 N bidirectional static holding force. If air pressure drops or an E-stop trips, the collet clamps the rod to hold the load safely with no live air. It features a 40 mm adjustable air cushion at both ends and a dedicated G1/8 release port. Note this SKU lacks a magnet, so position sensing is not available.
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 BSED125X100 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 BSED125X100 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X100 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 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 BSED125X100
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×100 | 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 BSED125X100 Is Used
Heavy Machining Clamps
Secures heavy cast iron fixtures during milling. The 8600 N lock prevents drift during cutting, while the 8028 N equal both-way force handles rapid clamp and retract strokes.
Overhead Lift Stations
Holds vertical lift arms rigidly in place during an air loss event. The double-rod design ensures the rear rod can mount a physical flag for mechanical tracking.
Automated Press Feeders
Drives heavy stock material back and forth with symmetric 5734 N force at 0.5 MPa. The fail-safe collet locks the 32 mm rod instantly if the E-stop is hit.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X100 the Right Cylinder?
Select this 125 mm bore model when your application requires both-way symmetric drive up to 819 kgf and a robust fail-safe hold up to 8600 N. If your load demands less force, step down to the 100 mm bore, which provides 3681 N at 0.5 MPa and a 5500 N hold. If you need even greater holding capacity, this 125 mm is the largest standard bore available.
Always verify your static load is under 8600 N. 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. For a replacement, match the 100 mm stroke, PT1/2 port, and Basic/LB/FA/TC mounting choice.
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 BSED125X100 FAQ
The double-rod drive force is equal both ways: 5734 N at 0.5 MPa and 8028 N at 0.7 MPa (max 819 kgf). The integrated spring-applied rod lock provides an 8600 N bidirectional static holding force with no live air.
The lock is a spring-applied, air-released collet, not a dynamic brake. You must engage it only after the rod stops. To release, apply pressure to the separate G1/8 release port (0.15-0.7 MPa) only after both piston sides are pressure-balanced, allowing at least 0.5 seconds for the collet to disengage.
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