Airtac BSED Clamping Double Acting Cylinder BSED100X125
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED100X125 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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac BSED Clamping Double Acting Cylinder BSED100X125
The AirTAC BSED100X125 is a double-acting double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. Because a rod exits both ends, it provides equal drive force in both directions, delivering 3681 N each way at 0.5 MPa and 5153 N at 0.7 MPa. The rear rod is ideal for mounting external flags or tooling while resisting rotational twist.
A bidirectional collet clamps the rod to provide a 5500 N static holding force with zero live air required. This fail-safe lock engages only after the piston stops and releases via a dedicated G1/8 port once both sides are pressure-balanced. Note this SKU lacks a magnet, so CMSE or DMSE position sensors cannot be used.
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 BSED100X125 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 BSED100X125 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED100X125 |
|---|---|
| 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 BSED100X125
| 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 BSED100X125 Is Used
Heavy Machining Fixtures
Clamps heavy cast parts with 5153 N of equal both-way force, while the 5500 N rod lock holds the workpiece securely if shop air drops during a cut.
Overhead Z-Axis Lifts
Raises and lowers 500 kg tooling platens symmetrically, relying on the fail-safe collet to prevent gravity-driven falls during an E-stop event.
Press Ejection Stations
Drives heavy stamping ejectors in both directions at identical speeds, locking the 25 mm rod instantly to maintain position between cycle strokes.
Is the Airtac BSED Clamping Double Acting Cylinder BSED100X125 the Right Cylinder?
Select this 100 mm bore when an application requires both-way symmetric thrust up to 5153 N alongside a 5500 N fail-safe holding force. If your load demands less force, the 80 mm bore offers 2268 N at 0.5 MPa and a 3600 N hold; if you need more, step up to the 125 mm bore providing 5734 N at 0.5 MPa and an 8600 N hold. Always verify your load stays under the 5500 N static limit.
Engage the lock only after the rod fully stops, and allow at least 0.5 seconds for the release cycle after balancing piston pressures. For exact replacements, match the 125 mm stroke, PT1/2 cylinder port, M20x1.5 rod thread, and your chosen mounting from 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 BSED100X125 FAQ
The double-rod design provides equal drive force in both directions: 3681 N at 0.5 MPa and 5153 N at 0.7 MPa, equating to a maximum drive force of 525 kgf. Separately, the integrated fail-safe rod lock provides a 5500 N static holding force with no live air required.
The spring-applied collet is a static hold, not a dynamic brake, so engage it only after the rod stops. To release, apply air to the dedicated G1/8 release port after balancing pressure on both piston sides, allowing at least 0.5 seconds for the collet to open.
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