TiNi ERM E250 Ejector Release Mechanism
Ensign-Bickford Aerospace & Defense (EBAD)
The EBAD TiNi™ Ejector Release Mechanism E250 is a derivative of the TiNi™ Pin Pullers, employing a Shape Memory Alloy (SMA) wire threaded through a latch and attached to electrical contacts. This latch retains internal ball bearings that hold compressed drive springs in place before actuation. A smaller internal reset spring assists in the reset […]
Typed specifications1 values
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- .138 in-32 product page
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As published by the supplier15 lines, in the manufacturer's own wording
- Max release load
- 250 lbf (1,112 N)
- Proof load
- 350 lbf (1,557 N)
- Max torque
- 92 in-oz
- Coupler kick off-force
- 1.5 lbf
- Max misalignment capability
- +/- 5º engagement and deployment
- Mass
- 2.7 oz (75 g)
- Operating current
- .75 to 2.5 A
- Resistance
- 3.3±.3 Ω
- Function time @ 23°c
- 100 ms max @ 1.25 A
- Cycle life
- 50 min
- Operating temperature
- -65ºC + 70ºC
- Height (without coupler)x
- 1.375 in
- Height (with coupler)y
- 2.195 in
- Max diameter (with flange)z
- 1.85 in
- Std coupler engagement size
- .138 in-32
About
The EBAD TiNi™ Ejector Release Mechanism E250 is a derivative of the TiNi™ Pin Pullers, employing a Shape Memory Alloy (SMA) wire threaded through a latch and attached to electrical contacts. This latch retains internal ball bearings that hold compressed drive springs in place before actuation. A smaller internal reset spring assists in the reset process. Additional ball locks are incorporated between the output pin and the coupler, with a kick-off spring helping to keep external ball locks in place after actuation. The ejector is fully vented, typically featuring an aluminum alloy enclosure and a custom 455 SS coupler with a tiolon finish. Alternative voltages are accommodated by an internal resistor to prevent SMA wire overheating. It is suitable for parachute releases, underwater actuations, and modifications into other mechanisms like gas cylinder penetrators.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.