Series 72: Sigma Elastic rubber tread; hardness 70+/-3 Shore A; good resistance to wear and to tearing; aluminium and cast iron centre. Standard duty (NL), medium-heavy duty (P), extra-heavy duty (EP) and electro-welded (EE) castors. Diameter: 100-300 mm, Carrying capacity: 180-950 daN.
Series 73: Sigma Elastic rubber tread; hardness 70+/-3 Shore A; good resistance to wear and to tearing; polyamide 6 centre. Standard duty (NL), medium-heavy duty (P), stainless steel medium-heavy duty (PX) castors. Diameter: 100-200 mm, Carrying capacity: 150-450 daN.
Series 73AE: Non-marking blue elastic rubber wheels, hardness 70 Shore A; polyamide 6 centre. Standard duty brackets (NL) and medium-heavy duty brackets (P). Diameter: 100-200 mm, Carrying capacity: 150-350 daN.
