Hitachi CARBON BRUSH (1 PAIR) - 999059

999-059 supersedes older part numbers: 999059

Hitachi 999059 — genuine Hitachi carbon brush set (pair)

A direct-replacement carbon brush kit (2 brushes) for Hitachi/HiKOKI angle grinders. Each brush is a standard graphite/carbon contact block sized about 7 × 13 × 22–23 mm (typical length listed as ~22.5 mm), made to restore reliable electrical contact with the armature and reduce sparking and intermittent power.

Designed to fit the brush holders used on Hitachi/HiKOKI 230 mm disc grinders — example models include G18ST / G18SS, G18SW2, G23ST and G23SW2 and G23SWU2 grinders. The part is listed as Hitachi/HiKOKI part number 999059 and is supplied as the correct replacement for those models.

What you get and why it matters: two original Hitachi carbon brushes manufactured to the tool’s specification so they seat in the standard brush holders without modification; replacing worn brushes like these typically restores smooth start-up, steadier power under load, and reduced arcing during use. Before fitting, confirm the brush dimensions and connector type against your existing brushes to ensure the correct length and lead/terminal arrangement for your tool.