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Toroidal Core
Toroidal Core
  • Toroidal Core
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Toroidal Core

Trade Mark
NICORE
Standard
Customized Dimensions
Limit dimension
OD: 8 mm~1600 mm; ID: 5 mm~1000 mm; Strip width: 3 mm~1000 mm
Certificates
RoHs, REACH
Delivery time
Samples: 3~5 days; Batches: 5~30 days accordingly
Payment term
TT or L/C


Range of dimension:


- Strip width: minimum 3mm
- Inside diameter: minimum 5mm
- Outside diameter: minimum 8mm, maximum 1100mm




Toroidal cores tolerance (mm)

Outside Diameter
Inside Diameter
Height
OD
△D
ID
△d
△h
≤10
±0.4
≤10
±0.30
±0.3
≤25
±0.5
≤25
±0.40
±0.3
≤50
±1.0
≤50
±0.50
±0.4
≤80
±1.0
≤80
±0.75
±0.5
≤100
±1.0
≤100
±0.80
±0.5
≤160
±2.0
≤160
±1.30
±0.8
≤200
±2.5
≤200
±1.50
±1.5
≤320
±2.5
≤320
±2.00
±2.0
≤500
±3.5
≤500
±2.50
±2.5
≤800
±5.0
≤800
±3.50
±3.0
>800
±7.5
>800
±5.00
±4.0



Optional treatments of finished core:

1Uncut, non-impregnated.

2Uncut, lightly impregnated with epoxy varnish.

3Cut, fully impregnated with epoxy resin.

4Multiple-cut, fully impregnated with epoxy resin.

5Assembled with plastic cases [PP, maximum working temperature 110, thickness 0.4~0.8mm].

6Green epoxy coating [maximum working temperature 180, thickness 0.20~0.50mm].

7Black epoxy painting.


Material:

High-quality CRGO steels with the characteristics of low iron-loss and high permeability in thickness of 0.05mm, 0.23mm, 0.27mm, and 0.3mm.


Characteristic:


It is toroidal and wound in the same direction of closed flux path. No magnetic flux leakage. It has the best magnetic performance. It is easy and high-efficiency for coil winding with the toroidal winding machine.


Application:

The toroidal core is widely used in 50Hz and 400Hz transformers, current transformers, reactors, chokes, and other magnetic components of electronic equipment.


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