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Carbon Brushes

MG1147 Wind Power Main Carbon Brush

Part No. MG1147,MG1157,MG1167

MG1147 is Morgan's wind-power main (phase) carbon brush for 1.5–6 MW turbine generator slip rings in standard environments. ρ3.20 µΩ·m, Rockwell 75, recommended 13–18 A/cm², max 40 m/s; available 20 × 32 × 64, 20 × 40 × 100 and 25 × 32 × 80 mm.

Material	Morgan MG1147
Dimensions	- 20 × 32 × 64 mm - 20 × 40 × 100 mm - 25 × 32 × 80 mm - Custom sizes per drawing or sample
Application	MG1147 is Morgan's wind power main (phase) carbon brush for generator slip rings in 1.5–6 MW wind turbines, in standard/common environments. It is used on: - Wind turbine generator main/phase brushes — rotor current transfer on steel slip rin
Current Density	- Recommended operating current density: 13–18 A/cm² (Morgan wind power sele
Speed	Maximum linear velocity 40 m/s
Hardness	Rockwell hardness 75 HR10/588
Grade	Morgan MG1147

Compatible Models

Siemens Gamesa G-series wind turbines: G4X/G5X G8X/G9X G114/G126 G132/G145 SG4X MKI SG4X MKII SG5X SG13 — Morgan OEM platform range (verify grade per generator)

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Technical Specifications

Specification	Value
Grade	Morgan MG1147 (wind power main brush, General environment)
Material	Metal graphite (copper-graphite) — MG11x7 wind series
Resistivity	3.20 µΩ·m (320 µΩ·cm), Morgan wind power selection guide
Flexural Strength	30 MPa
Hardness	Rockwell 75 HR10/588
Density	2.95 g/cm³
Friction Coefficient	Medium class (0.22-0.4)
Max Linear Velocity	40 m/s
Recommended Current Density	13-18 A/cm²
Continuous Current Rating	18 A/cm²
Sizes	20 x 32 x 64 mm; 20 x 40 x 100 mm; 25 x 32 x 80 mm; custom per drawing
Voltage	Not rated (N/A)
Lead Type	Copper braid shunt(s) with terminal (count/length per drawing)
Spring	Not included (brush-holder/rocker supplied)
Family Variants	MG1127 (small capacity); MG1157 (plateau); MG1167 (marine) — not interchangeable
Application	1.5-6 MW wind turbine generator main/phase brushes on slip rings (standard environment)

Compatible Models

This MG1147 Wind Power Main Carbon Brush is designed as a direct replacement for the following machine models and series:

Siemens Gamesa G-series wind turbines: G4X/G5X G8X/G9X G114/G126 G132/G145 SG4X MKI SG4X MKII SG5X SG13 — Morgan OEM platform range (verify grade per generator) Vestas V-series: V52 V66 V80 V90 V100 V110 — Morgan OEM platform range (verify grade per generator) GE wind platforms: GE 1X GE 2x GE 3X — Morgan OEM platform range (verify) Nordex: N80 N90 AW1500 AW3000 — verify per generator Suzlon: S88 S97 — verify per generator Senvion: MM82 MM92 — verify per generator 1.5–6 MW wind turbine generators generally — main/phase brush position verify brush size and slip-ring material MG-series equivalents: MG1127 (small capacity) MG1157 (plateau) MG1167 (marine) — not interchangeable select by environment

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Description

This MG1147 carbon brush is a Morgan metal-graphite grade from the wind-power MG11x7 series, used as the main (phase) brush on wind-turbine generator slip rings in standard/common environments. It is designed for the rotor-current duty of 1.5–6 MW class generators, forming a stable patina on steel slip rings to keep friction and ring wear low while minimising dust generation — the criteria that decide brush and slip-ring life in wind service. Per Morgan's wind power selection guide, MG1147 has resistivity 3.20 µΩ·m, flexural strength 30 MPa, Rockwell hardness 75 (HR10/588), bulk density 2.95 g/cm³, medium friction coefficient class (0.22–0.4), maximum linear velocity 40 m/s and a recommended operating current density of 13–18 A/cm² (continuous rating 18 A/cm²). It is commonly supplied in 20 × 32 × 64 mm, 20 × 40 × 100 mm and 25 × 32 × 80 mm, or to drawing with multiple copper-braid shunts. For plateau or marine (abrasive/humid) sites, the MG1157 or MG1167 variants are the correct selection rather than MG1147.

Features & benefits:

Morgan MG1147 main brush — standard-environment grade for 1.5–6 MW wind generators
Stable patina, low friction — protects slip rings, minimises dust
ρ3.20 µΩ·m / Rockwell 75 / density 2.95 g/cm³ — Morgan selection-guide values
Recommended 13–18 A/cm² (continuous 18 A/cm²), max linear velocity 40 m/s
Environment-specific family — MG1127 (small capacity), MG1157 (plateau), MG1167 (marine)
Custom to your drawing — sizes, shunt count, lead length and terminal per specification
Quality-inspected before dispatch: dimensional check, shunt crimp integrity and surface condition per batch