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Rapid Smart "NiTi" Spring

Rapid
Standard range
Order Code:  

06-0772

 
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Brand: Rapid MPN: PAC-SW3
  • Country of Origin: USA
  • Free UK shipping available
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Qty Unit Price (Ex VAT)
1+ £5.57

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10 in stock, despatched same dayAdditional quantity lead time 7 days

These 5.5mm diameter springs are made from shape memory alloy. At room temperature this spring is soft enough to pull out to approximately 50mm by applying a small amount of force.


  • When heated to 70°C by passing an electric current through it (or by other means such as hot water or a heat gun, etc), the spring contracts to its original length with a useful pulling force (equivalent to lifting a 0.5kg weight)
  • Length: 20mm (when closed)
  • Supplied singly
Type Memory metal

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Questions


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23 January 2020 Question by: Charlie Pindar | Product code: 06-0772
Q. Do you have information on the spring's length, diameter, achievable stroke etc?
A. Hi Charlie, thank you for your question. The dimensions of the spring are 20mm in length x 5 mm in diameter, they can be extended to a maximum 50mm approximately.


29 December 2014 Question by: Rapid Customer | Product code: 06-0772
Q. Hi there Could I ask. How could these be used (mechanically) to pull a sliding door closed and opened < 200 grams force over 750mm distance, switching would be through mosfets/MCU ? Many Thanks in advance..... Peter
A. Hi Gengus, thanks for your question. Electrical force would need to be applied to return the spring to its original state, so once the door has been opened, and the spring stretched, the voltage would be applied and when the spring heats up it will return to its original state. See this link to the manufacturer's data sheet.


24 July 2013 Question by: Rapid Customer | Product code: 06-0772
Q. How do these springs react to temperature range of 36 to 45 degrees like in intra-oral environment? I'm interested in intra-oral application. Thanks.
A. Hi Lee. Thank you for your question. The springs are pull able at room temperature and between 36-45 degrees and these springs can easily be pulled apart. To get the springs to return to its original state they need a constant electricity supply to heat the wire and this returns it to its original state - see the data sheet.


09 April 2013 Question by: Rapid Customer | Product code: 06-0772
Q. Do these springs reaction to boling water also rather than electric current?
A. Hi KB. Thank you for your question. The springs will retract in boiling water after being pulled beyond their expansion point.


12 February 2013 Question by: Rapid Customer | Product code: 06-0772
Q. Could you connect two springs in series to get double the extension?
A. Hi Osian. Thank you for your question. You could connect two spring together to get double the extension.


12 February 2013 Question by: Rapid Customer | Product code: 06-0772
Q. How many Amps of current need to be inputted to get the spring to 70 degrees (i.e. how much current is needed to ge the spring to go back to its original length)?
A. Hi Osian. Thank you for your question, the data sheet states no more than 3 amps is required and a decent 6vdc lantern battery will be enough to do the job as stated in the data sheet.

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