Metric Size, Steel
Disk-Shaped Raw Magnets

With Bore or Countersunk Thru Hole

GN 55.1

RoHS Compliant


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Specification
Information

Magnet: Samarium and cobalt combination AlNiCo (SC type), plain finish, or neodymium, iron and boron version NdFeB (ND type)
Countersunk thru hole in sizes with d1 </= 24 mm, bore in sizes with d1 >/= 32 mm

Shipping

GN 55.1 Disk-Shaped Raw Magnets are unshielded disc-shaped (annular) magnets.
Owing to the vast range of different materials and sizes, these magnets are suitable for virtually any universal use. They are typically attached by gluing.
When used without air gap, individual raw magnets always have lower adhesive forces than a magnet assembly in which shielding and magnetic return enormously intensify the force acting at the adhesion surface. Depending on the air gap between magnet and mating component, individual raw magnets--unlike magnet assemblies--can have substantially higher adhesive forces.
In the event that no suitable retaining magnets / magnet assemblies are available, raw magnets may be used in combination with appropriate holding constructions to build up highly specific magnet assemblies.

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 ND Type

Dimensions in:

millimeters
(inches)

Part Number d1
Dia./Tolerance
d2
Bore
+0.3 mm
h
+/-0.1 mm
d3
+ 0.5 mm
Nominal Adhesive Forces in N
55.1-ND-12-3.5-3
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12 +/-0.1
(.47)
3.5
(.14)
3
(.12)
6.6
(.26)
18
55.1-ND-15-4.5-3.5
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15 +/-0.1
(.59)
4.5
(.18)
3.5
(.14)
9.3 
(.37)
29
55.1-ND-18-4.5-4
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18 +/-0.1
(.71)
4.5
(.18)
4
(.16)
9.3 
(.37)
41
55.1-ND-24-5.5-4
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24 +/-0.1
(.94)
5.5
(.22)
4
(.16)
11.5
(.45)
66
55.1-ND-32-10.5-2
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32 +/-0.1
(1.26)
10.5
(.41)
2
(.08)
-- 42
55.1-ND-38-12-4
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38 +/-0.1
(1.50)
12
(.47)
4
(.16)
-- 110
55.1-ND-48-15-5
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48 +/-0.2
(1.89)
12
(.47)
5
(.20)
-- 165
55.1-ND-56-15-6
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56 +/-0.2
(2.20)
15
(.59)
6
(.24)
-- 230
 
 SC Type

Dimensions in:

millimeters
(inches)

Part Number d1
Dia./Tolerance
d2
Bore
+0.3 mm
h
+/-0.1 mm
Nominal Adhesive Forces in N
55.1-SC-15-8-3.5
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15 +/-0.1
(.59)
8
(.31)
3.5
(.14)
23
55.1-SC-18-8-4
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18 +/-0.1
(.71)
8
(.31)
4
(.16)
31
55.1-SC-24-11.5-4
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24 +/-0.1
(.94)
11.5
(.45)
4
(.16)
51
55.1-SC-32-10-4
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32 +/-0.1
(1.26)
10
(.39)
4
(.16)
67