Airtac BSED Clamping Double Acting Cylinder BSED100X125S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED100X125S combines a double-rod ISO 15552 cylinder — a Ø25mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 5500 N in either direction if air is lost. Ø100mm bore, 125mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ100 mm
- Stroke125 mm
- Static holding force5500 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED100X125S
The AirTAC BSED100X125S is a double-acting, double-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal force and speed in both directions—delivering about 3681 N of drive force each way at 0.5 MPa. The rear rod is ideal for mounting flags, cams, or tooling while resisting rotation.
This fail-safe collet lock delivers a 5500 N static holding force with no live air required. It engages only after the rod stops and releases via a separate G1/8 port when piston sides are pressure-balanced. The extruded aluminum ISO 15552 body features a 36 mm adjustable air cushion at both ends, and the -S magnet supports CMSE and DMSE sensors.
Double Rod + 5500 N Rod Lock (Ø100mm)
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 BSED100X125S 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 BSED100X125S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED100X125S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 125 mm |
| Static holding force | 5500 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 – 800 mm/s |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC BSED datasheet. Rod thread M20×1.5 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø100mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 3682 N |
| 0.7 MPa (max) | 5154 N |
| Max drive (@0.7 MPa) | 526 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 5500 N static lock holding force. Size with a safety margin.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED100X125S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 100 | Bore size in mm. |
| ×125 | 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 BSED100X125S Is Used
Heavy Machining Fixtures
Clamps large castings using 5153 N of equal both-way force, while the 5500 N rod lock holds the workpiece securely during machining cycles without consuming live air.
Pallet Stopping Gates
Uses the double-rod design to mount a cam flag on the rear rod for position feedback, halting heavy pallets and locking them with 5500 N of static fail-safe force.
Overhead Lift Stations
Raises and lowers 500 kg loads with symmetric speed, relying on the spring-applied collet to prevent drops during an E-stop or air loss event.
Is the Airtac BSED Clamping Double Acting Cylinder BSED100X125S the Right Cylinder?
Select this 100 mm bore actuator when an application demands both symmetric drive force and reliable mid-stroke holding. Verify your static load does not exceed the 5500 N holding capacity. If you need less force, the 80 mm bore provides 2268 N drive force at 0.5 MPa and 3600 N holding force. If you need more, the 125 mm bore offers 5734 N drive force at 0.5 MPa and 8600 N holding force.
Always engage the lock only after the rod stops, and allow at least 0.5 seconds for release once pressure is balanced. Operating pressure is capped at 0.7 MPa. For exact replacement matching, confirm the 125 mm stroke, PT1/2 cylinder port, M20x1.5 rod thread, and your mounting choice (Basic, LB, FA, or TC).
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 5500 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 BSED100X125S FAQ
The equal both-way drive force is 3681 N at 0.5 MPa and 5153 N at 0.7 MPa (max 525 kgf). The separate static holding force of the spring-applied rod lock is 5500 N, which holds the load in place with no live air.
The lock is a static holding device, not a dynamic brake. Engage it only after the rod stops moving. To release, apply air to the G1/8 release port only after both piston sides are pressure-balanced, allowing at least 0.5 seconds for the collet to disengage.
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