Ronstan RF30721 Series 30 Ball Bearing Block – Double Exit With Cover Plate

High performance and low friction

The Ronstan RF30721 Series 30 Ball Bearing Block
features sheaves running on Acetal ball bearings that provide high
performance and low friction. The 2-stage ball bearing system
provides consistent performance over the full load range.

Ronstan RF30721 Series 30 Ball Bearing Block
Features:

• Exit blocks minimise friction in lines passing through the deck
  or exiting masts and booms
• Grade 316 stainless steel load straps
• Acetal ball bearings
• UV stabilised Acetal sheave
• Impact and UV resistant, fibre reinforced Nylon cheeks

Ronstan RF30721 Series 30 Ball Bearing Block
Specifications:

• Sheave diameter: 30 mm
• Max. Rope diameter: 8 mm
• M.W.L.: 300 kg
• B. L.: 750 kg
• Weight: 60 g