Ronstan CW55175 Series 30 Stand Up Swivel Ball Bearing Block

Ronstan Series 30 Stand Up Swivel Ball Bearing Block

The Ronstan Series 30 Ball Bearing Orbit Block is engineered for high performance with a superior strength-to-weight ratio. Utilizing advanced composite materials, this block is designed to minimize friction while maintaining a lightweight structure. Featuring multiple attachment options and precision bearings, it is perfect for a variety of marine applications.

Applications:

• Ideal for mainsheet and spinnaker systems on dinghies up to 5M (16')
• Suitable for halyard, vang, and backstay applications on vessels up to 5M (16')
• Effective for control line applications on larger yachts

Materials:

• Sheave: High compression strength carbon black Acetal
• Ball Bearings: High compression strength Acetal
• Frame/Cheeks: Toughened, glass fiber reinforced Nylon
• Link: UV stabilized, multi-strand impregnated SK75 Dyneema®

Specifications:

• Sheave Ø: 30mm (1-3/16")
• Max. Rope Ø: 8mm (5/16")
• M.W.L.: 300kg (660lbs)
• B. L.: 600kg (1,320lbs)
• Weight: 33g (1.2oz)