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Series 40 Orbit BB Cheek Block


Model # 9553074 | Mfg # RF45151
In stock online.

Ronstan’s Orbit Blocks are ideal for sheet applications on dinghies up to 16' and control line applications for small keel boats. These blocks feature a precision, two-stage bearing for reduced friction under high loads. 

  • Sheave: Carbon fiber reinforced, PTFE impregnated engineered nylon
  • Ball bearings: High compression strength carbon black acetal; stage-2 bearing: glass fiber reinforced, MoS2 impregnated engineered nylon
  • Cheek material/finish: Toughened glass fiber reinforced nylon

Series 40 Orbit BB Cheek Block

Becket No Becket
Diameter 5/16 Inch or 8 mm
Direction Any
Integral Cleat No Integral Cleat
Mount Type Mechanical Fasteners
Ratchet Non Ratcheting
Safe Working Load 715 Pounds
Sheave Diameter 1 9/16 Inches or 40 mm
Type Single Cheek/Foot
Weight 1.1 Ounces

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