Airtac BSE Clamp Standard Cylinder BSE40X125S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X125S is a genuine double-acting ISO 15552 cylinder with an integrated spring-applied, air-released ROD LOCK. If air is cut or an E-stop is hit, the collet clamps the Ø16mm rod and holds up to 900 N in either direction — no drift. Ø40mm bore, 125mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ40 mm
- Stroke125 mm
- Static holding force900 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- 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 BSE Clamp Standard Cylinder BSE40X125S
The AirTAC BSE40X125S is a double-acting, single-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A collet clamps the 16 mm rod to deliver a bidirectional static holding force of 900 N with zero live air. Operating pressure is capped at 0.15-0.7 MPa, and the lock unlocks via a separate G1/8 port.
This fail-safe mechanism prevents vertical loads from drifting if air pressure drops or an E-stop trips. The lock is a holding device, not a dynamic brake; engage it only after the rod fully stops, and allow at least 0.5 s for release once piston pressures balance. Equipped with a -S magnet, it supports CMSE reed and DMSE electronic sensors.
Rod Lock — 900 N Static Holding (Ø40mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE40X125S holds its position in both directions when air is lost, exhausted or an E-stop trips. Apply 0.15–0.7 MPa to the G1/8 release port to unlock. Engage the lock only after the rod has stopped (it is not a dynamic brake), and release only when the pressures on both sides of the piston are balanced. Allow at least 0.5 s for full release before moving.
Airtac BSE Clamp Standard Cylinder BSE40X125S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X125S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Static holding force | 900 N |
| Cylinder port | PT1/4 |
| Lock-release port | G1/8 |
| Rod thread | M12×1.25 |
|---|---|
| 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 |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 800 mm |
Specifications follow the official AirTAC BSE datasheet. The lock uses the SE standard body; SE mounting accessories fit BSE except FTC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
| Max drive (@0.7 MPa) | 90 kgf | |
Drive force is separate from the 900 N static holding force of the lock. BSE operates up to 0.7 MPa. Size with a safety margin.
Model Code: Airtac BSE Clamp Standard Cylinder BSE40X125S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 40 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Thread: PT (blank) / G. Mounting (BSE): Basic, LB, FA, FB, CA, CB, CR, TC (FTC is not available on BSE). Related: SE (no lock), BSED (double-rod rod lock). Sensors CMSE/DMSE fit magnetic BSE.
Where the Airtac BSE Clamp Standard Cylinder BSE40X125S Is Used
Pneumatic Vertical Lift
Holds a 900 N vertical load on an assembly lift in place during an E-stop, preventing backdriving when main air exhausts.
Tooling Clamp Hold
Secures a machining fixture with 628 N push at 0.5 MPa, then locks the 16 mm rod to maintain the clamp if shop air drops.
Safety Gate Stop
Locks a machine access gate instantly at its position, using the spring-applied collet to keep it shut until balanced air releases it.
Is the Airtac BSE Clamp Standard Cylinder BSE40X125S the Right Cylinder?
Verify your suspended load stays under the 900 N static holding force. If you need less drive, the 32 mm bore offers 402 N push at 0.5 MPa and a 600 N hold. For heavier lifting, the 50 mm bore provides 982 N push at 0.5 MPa and a 1400 N hold. To replace this unit, match the 40 mm bore, 125 mm stroke, PT1/4 cylinder port, and -S magnet. SE mounting accessories fit this body except FTC. For this 125 mm stroke, standard guide rails should adequately manage side loads without requiring external guides.
Quick checklist
- ✓ Load to hold ≤ 900 N?
- ✓ Fail-safe hold on air loss / E-stop needed
- ✓ Lock engaged only when stopped
- ✓ G1/8 release-air line available
- ✓ Magnet (-S) for CMSE/DMSE sensors?
Installation & Safety Notes
- check Engage the lock only after the rod has stopped — not as 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 Add safety-rated controls for man-rated / overhead loads.
- check Use SE mounting accessories (FTC excepted).
Airtac BSE Clamp Standard Cylinder BSE40X125S FAQ
The spring-applied collet clamps the rod, providing a 900 N bidirectional static hold with no live air. It is a fail-safe lock, not a dynamic brake; engage it only after the rod stops, and allow >=0.5 s for release.
Drive force is separate from the hold. At 0.5 MPa, push is 628 N and pull is 528 N. At the 0.7 MPa ceiling, push is 879 N (max 90 kgf). The lock provides a 900 N static hold.
Authorized Export Seller
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.
Related AirTAC BSE Cylinders
Request a Quote for Airtac BSE Clamp Standard Cylinder BSE40X125S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.