Airtac BSED Clamping Double Acting Cylinder BSED125X75
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X75 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, 75mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke75 mm
- Static holding force8600 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 BSED125X75
The AirTAC BSED125X75 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 drive force in both directions at about 5734 N each way at 0.5 MPa. The extruded aluminum barrel has no external tie rods, ensuring a clean ISO 15552 mounting interface.
This unit delivers a massive 8600 N bidirectional static holding force. The collet mechanism engages automatically with no live air, locking the 32 mm rod securely. It features a 40 mm adjustable air cushion at both ends and a dedicated G1/8 release port. Note that this specific SKU lacks a magnet (-S), so CMSE or DMSE position sensors cannot be used.
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 BSED125X75 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 BSED125X75 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X75 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 75 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 BSED125X75
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×75 | 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 BSED125X75 Is Used
Heavy Vertical Lifts
Holds massive overhead loads securely with 8600 N of fail-safe force, preventing drops during air loss while delivering 8028 N of equal both-way drive.
Large Press Indexing
The twin 32 mm rods resist torsion and provide symmetric 5734 N force at 0.5 MPa, ensuring stable positioning when clamping heavy workpieces.
Stamping Press Feeder
Uses the rear rod for cam actuation while the front rod strokes at 30-500 mm/s, locking instantly with zero air to secure the strip during E-stops.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X75 the Right Cylinder?
Select this 125 mm bore model when your application demands both symmetric thrust and fail-safe holding. Verify your load requires holding up to 8600 N and drive force up to 8028 N at 0.7 MPa (819 kgf). If you need less force, step down to the 100 mm bore, which provides 3681 N at 0.5 MPa and a 5500 N holding force. As the largest standard bore, there is no larger step up; for higher loads, consider parallel cylinders.
Always 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. Operating pressure is capped at 0.7 MPa. When replacing, match the 125 mm bore, 75 mm stroke, PT1/2 cylinder port, and your specific mounting choice (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 BSED125X75 FAQ
The spring-applied collet clamps the rod immediately, providing a static holding force of 8600 N without any live air. It is a fail-safe lock, not a dynamic brake, so it only engages after the rod stops.
The equal both-way drive force is 5734 N at 0.5 MPa and 8028 N at 0.7 MPa (max 819 kgf). The static holding force is 8600 N. The operating speed range is 30-500 mm/s, and operating pressure is capped at 0.7 MPa.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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