Airtac BSED Clamping Double Acting Cylinder BSED125X700
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X700 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, 700mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke700 mm
- Static holding force8600 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED125X700
The AirTAC BSED125X700 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A Ø32 mm rod exits both ends, delivering equal drive force of 5734 N each way at 0.5 MPa and 8028 N at 0.7 MPa. This symmetric design is ideal for carrying rear-rod tooling or flags while resisting rotation.
The fail-safe collet lock provides an 8600 N static holding force without requiring live air. If pressure drops or an E-stop trips, the rod is securely clamped at position. Note this specific SKU lacks the -S magnet option, 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 BSED125X700 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 BSED125X700 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X700 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 BSED125X700
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×700 | 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 BSED125X700 Is Used
Heavy Vertical Lifts
Hoists heavy platens using equal 8028 N force both ways, engaging the 8600 N fail-safe collet lock to prevent drops during an E-stop or air loss.
Large Press Indexing
Shifts heavy tooling with symmetric both-way thrust, using the rear rod for cam flags while the lock holds the 700 mm stroke rigidly during press cycles.
Pallet Accumulation
Stops massive pallets on high-capacity lines, absorbing inertia via adjustable 40 mm cushions before the spring-applied lock secures the 819 kgf load.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X700 the Right Cylinder?
Select this 125 mm bore when your application requires both massive symmetric thrust and fail-safe holding. Verify your load does not exceed the 8600 N static holding force. If you need less force, step down to the 100 mm bore (3681 N drive @0.5 MPa, 5500 N hold); as the largest standard bore, there is no larger option up. Operating pressure is capped at 0.7 MPa.
Engage the lock only after the rod fully stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 s. With a 700 mm stroke, ensure external guide rails are used to manage side loads and prevent binding. Replacement matches require the exact 125 mm bore, 700 mm stroke, PT1/2 port, and chosen mounting (Basic, LB, FA, or 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 BSED125X700 FAQ
The drive force is equal both directions at 5734 N @0.5 MPa and 8028 N @0.7 MPa (max 819 kgf). The separate static fail-safe holding force of the spring-applied rod lock is 8600 N with no live air.
The collet lock is spring-applied and air-released. If air is lost, it clamps the rod bidirectionally up to 8600 N. To release safely, pressure-balance both piston sides, apply air to the G1/8 release port, and wait at least 0.5 s before moving.
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