Toroidal Cores

Introduction:

Available Materials: We can stably supply world-class high-quality grain-oriented silicon steel sheets (Baosteel, Shougang, Nippon Steel NSC, Kawasaki JFE, POSCO, AK Steel). Available thickness options: ultra-thin grain-oriented silicon steel sheets of 0.05 mm, 0.08 mm, 0.10 mm; 0.1 mm super silicon steel; conventional or high-magnetic-induction Hi-B silicon steel sheets in 0.23 mm, 0.27 mm and 0.30 mm.

Structural Features: Toroidal design follows the magnetic path to achieve a fully-closed magnetic circuit and zero flux leakage for superior magnetic properties.

Specifications of Toroidal Cores:

Limit Dimensions	Min. Strip Width (H Min.)	Max. Strip Width (H Max.)	Min. Inner Diameter (ID Min.)	Max. Inner Diameter (ID Max)	Max. Outer Diameter (OD Max)
	3 mm	400 mm	5 mm	1000 mm	1200 mm
Dimensional Tolerance	Outer Diameter (mm)		Inner Diameter (mm)		Strip Width (mm)
	OD	ΔD	ID	Δd	ΔH
	≤10	±0.4	≤10	±0.30	±0.3
	≤25	±0.5	≤25	±0.40	±0.3
	≤50	±1.0	≤50	±0.50	±0.3
	≤80	±1.0	≤80	±0.75	±0.5
	≤100	±1.0	≤100	±0.80	±0.5
	≤160	±2.0	≤160	±1.30	±0.5
	≤200	±2.5	≤200	±1.50	±0.5
	≤320	±2.5	≤320	±2.00	±1.0
	≤500	±3.5	≤500	±2.50	±1.0
	≤800	±5.0	≤800	±3.50	±1.5
	＞800	±7.5	＞800	±5.00	±1.5

Note: We can custom-made according to customer requirements to satisfy various specification demands.

Applications:Toroidal cores of various specifications are widely used for electromagnetic components at 50Hz and 400 Hz.

• • Transformers
  • Current Transformers
  • Reactors
  • Chokes.