Ronstan Series 50 ball bearing block, single with swivel head. Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.

Features
•Low friction, 2-stage ball bearing system
•High static and dynamic load capacity
•Lightweight
•Cheek cut-outs for easy bearing maintenance
•Captive Lock™ universal head
•Slotted pin shackle eliminates fouled lines

Applications
•Mainsheet
•Spinnaker sheets
•Halyards and other primary applications on boats up to 10m (33ft)

Materials
•Acetal ball bearings
•UV stabilised Acetal sheave
•Grade 316 stainless steel load strap and head fitting
•Impact and UV resistant, fibre reinforced Nylon cheeks

SPECIFICATIONS:
Sheave Ø:50 mm
Max. Rope Ø: 12 mm
Pin Ø: 5.0 mm
Max Working Load: 500 kg
Breaking Load: 1500 kg
Weight: 117 g