Airtac BSED Clamping Double Acting Cylinder BSED125X160S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X160S 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, 160mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke160 mm
- Static holding force8600 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED125X160S
The AirTAC BSED125X160S 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 drive force of 5734 N each way at 0.5 MPa. The fail-safe collet clamps the 32mm rod with a static holding force of 8600 N whenever air pressure is lost.
This extruded aluminum body utilizes a separate G1/8 release port to disengage the lock, operating at a 0.15-0.7 MPa ceiling. The integrated magnet (-S) supports CMSE reed and DMSE electronic sensors for mid-stroke positioning, while the rear rod can mount a flag or resist rotation for tooling symmetry.
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 BSED125X160S 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 BSED125X160S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X160S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 BSED125X160S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×160 | 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 BSED125X160S Is Used
Heavy Machining Jigs
Holds heavy casting fixtures securely with 8600 N of fail-safe clamping force during power loss, while the double-rod design delivers equal 8028 N clamping pressure in both directions.
Vertical Press Lifts
Prevents heavy vertical platens from dropping when air is lost, engaging only after the rod stops to lock the 819 kgf load safely in place without relying on air cushions.
Symmetric Transfer Units
Uses the rear rod for cam tracking while providing identical push and pull forces of 5734 N at 0.5 MPa, ensuring stable heavy payload transfer without rotation.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X160S the Right Cylinder?
Select this 125mm bore when an application demands symmetric both-way force and fail-safe holding up to 8600 N. If your load requires less holding, step down to the 100mm bore, which yields 3681 N of drive force at 0.5 MPa and a 5500 N static hold. If you need more drive power, 125mm is the largest available BSED size. Ensure the load to hold is strictly below 8600 N and engage the lock only after the rod completely stops.
For this 160mm stroke, verify guide alignment to prevent side loads from damaging the seals. To safely release the lock, balance pressure on both piston sides and allow at least 0.5 seconds before moving. When replacing a unit, match the 125mm bore, 160mm stroke, PT1/2 cylinder port, and the -S magnet option.
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 BSED125X160S FAQ
The integrated spring-applied collet engages immediately, providing a bidirectional static holding force of 8600 N with no live air. It is a fail-safe lock, not a dynamic brake, so it must only be engaged after the rod stops moving.
The drive force is equal both ways: 5734 N at 0.5 MPa, 8028 N at 0.7 MPa, with a max drive of 819 kgf. To release the 8600 N lock safely, balance pressure on both piston sides via the PT1/2 ports, apply air to the G1/8 release port, and wait at least 0.5 seconds before moving.
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