Metric Size, Steel
Retaining Magnet Assemblies

With Ball Knob or Key Ring, with Rubber Jacket
GN 51.7

RoHS Compliant


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Specification
Information

Housing: Steel, zinc plated
Magnet: Neodymium, iron and boron version NdFeB (ND type)
Rubber jacket: Elastomer (TPE), 73 shore, black
Ball knob: Technopolymer plastic (Polyamide PA), matte black
Key ring: Steel, nickel plated

Shipping


GN 51.7 magnets are a shielded magnetic assembly with arubber jacket.
They are especially suitable for applications where the surface is easily marred. Also, these magnets have an increased coefficient of friction, which creates high lateral retaining force.
Type ND temperature resistant to 175 °F (80°C).
See also Types of Retaining Magnet Assemblies, Materials Composition of Retaining Magnet Assemblies, and Pulling Force Information for Retaining Magnet Assemblies.

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 ND Type

Dimensions in:

millimeters
(inches)

Part Number d1
Dia.
d2
Knob
d3
Ring
h1 h2
Knob
h3
Ring
Nominal Pulling Forces [N]
Type A
With Knob
Type B
With Key Ring
51.7-ND-22-A
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51.7-ND-22-B
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22
(.87)
16
(.63)
20
(.79)
6
(.24)
25
(.98)
13
(.51)
35
51.7-ND-31-A
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51.7-ND-31-B
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31
(1.22)
16
(.63)
25
(.98)
6
(.24)
25
(.98)
14.5
(.57)
75
51.7-ND-43-A
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51.7-ND-43-B
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43
(1.69)
16
(.63)
30
(1.18)
5.5
(.22)
24
(.94)
17
(.67)
85