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Winding wire

SHTherm® 220 Glide

  • Enamelled round copper wire, thermoresistant and self lubricating
  • Insulated with polyamide-imide
  • Class 220

SHTherm® 220 Glide is a highly thermoresistant enamelled copper wire of heat performance class R with superior thermal, chemical and mechanical resistance. It is used for special applications requiring the following criteria:

  • very high permanent thermal resistance and short-time thermal overload
  • very good resistance to aggressive mediums in liquid or gas form

SHTherm® 220 is ideally suited for use in special safety-relevant and electrical life support equipment. Sophisticated process technology and process setting ensure easy mouldability, good elongation and constant insulation properties of these wires.

The final layer of varnish serves the purpose of providing a superior gliding surface, giving the wire excellent windability features at higher speeds, and enabling a higher filling factor plus reduced soiling of the winding machines. The reduced coefficient of friction helps to avoid damage to the wire during winding and thus maintains the insualtion properties of the wire.


E-Mobility, control gears, electric motors, power tools, pump drives, refrigerators, special drives, special applications in the medical field


IEC / DIN EN 60317-26
UL approved

Delivery forms

Grade 1: 0.200 - 1.200 mm (>1.200 mm on request)
Grade 2: on request

Technical data

Typical properties of enamelled round copper wire 0.500 mm, with insulation film grade 1

Overall diameter  Bare wire diameter  Adhesion (no cracks in film after winding)  Scrape resistance  Pencil hardness  Elongation at break  Coefficient of friction 
Unit of measure Set value  Actual value (typ.) 
mm  min. 0.524 - max. 0.544 as set value
mm  0.495-0.505 as set value
  mandrel diameter 0.500 mm 1 x d / 10 % pre-elongation
≥ 3.950 ≥ 7.500
  H 5H - 6H
≥ 28 ≥ 38
µ  / ≤ 0.110
Temperature index TI  Cut through temperature (pre-heated block)  Dielectric loss factor (bending point)  Heat shock at 240 °C (no cracks in varnish coat after winding)  Solderability 
Unit of measure Set value  Actual value (typ.) 
°C  220 220
°C  350 ≥ 400
(°C) (tan δ)  / ≥ 240
  mandrel diameter 1.120 mm 1 x d / 10 % pre-elongation
  no no
Dielectrical strength at RT  High voltage discontiniuties 750V  Electrical conductivity 
Unit of measure Set value  Actual value (typ.) 
kV  ≥ 2.4 (twist) ≥ 5 (cylinder)
  ≤ 10 on 30 m ≤ 7 on 100 m
MS/m  58 - 59 ≥ 58.5
Pencil hardness (storage in standard solvent ½ h / 60 °C)  Pencil hardness (storage in alcohol ½ h / 60 °C)  Resistance to commercial impregnants^(1)  Resistance to commercial refrigerants^(1)  Resistance to commercial dry transformer oils^(1)  Resistance to commercial hydraulic oils^(1) 
Set value  Actual value (typ.) 
min. H 4H - 6H
min. H 4H - 6H
/ yes
/ yes
/ yes
/ yes

(1) Due to the variety of individual applications we cannot make any generally binding commitments regarding the compatibility. We recommend testing compatibility with the materials being used.