Ball Bearing Blocks

 Series 40mm


  •  Low friction Acetal or Torlon® bearing system
  •  Lightweight
  •  Cheek cut-outs for easy bearing maintenance

  Product No. Desc. Sheave ØMax. Rope ØMax. Cable ØPin ØM.W.L.B. L.Weight
 RF40100 RF40100 Single, universal head 4010-5.0350100070
 RF40101 RF40101 Single, loop head 4010--350100053
 RF40110 RF40110 Single, becket, universal head 4010-5.0350100079
 RF40111 RF40111 Single, becket, loop head 4010--350100060
 RF40140 RF40140 Stand-up 4010--35080071
 RF40200 RF40200 Double, swivel shackle head (non-locking) 40105001200134
 RF40210 RF40210 Double, becket, swivel shackle head (non-locking) 401055001200142
 RF40300 RF40300 Triple, swivel shackle head 4010-5.06001400194
 RF40310 RF40310 Triple, becket, swivel shackle head (non-locking) 401056001400209
 RF40500 RF40500 Fiddle, universal head 40 + 248-5.0350100090
 RF40510 RF40510 Fiddle, becket, universal head 40 + 248-5.0350100097
 RF40520 RF40520 Fiddle, adjustable cleat, universal head 40 + 248-5.03501000156
 RF40530 RF40530 Fiddle, becket, adjustable cleat, universal head* 40 + 248-5.03501000163


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.


  • Mainsheet
  • Halyard
  • Vang
  • Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)