ALUMINIUM CORE - VULCANIZED BLACK ELASTIC RUBBER.
Black elastic rubber coating, hardness 73±5 Shore A.
Core in die-cast aluminium alloy.
Excellent smooth and silent running; high abrasion resistance.
Temperature range: -20°C / +70°C (-4°F / +158°F).
Hub with: shielded precision ball bearings; standard roller bearing.
MEDIUM DUTY CASTORS
Finish: electro-zinc plated, white.
Top plate with forged central pin in pressed steel-sheet.
Thermoplastic dust protection ring.
Swivel fork in pressed steel-sheet.
Hardened steel balls.
Balls retaining ring in pressed steel-sheet.