Description
Race Sheave – Acetal Ball Bearing – 28mm(1-1/8″) OD
Precision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction.
Acetal Sheaves:
- Choice of bearings
- Acetal ball bearings – minimum friction under moderate loads
- U.V. resistant Acetal sheaves



![Ronstan Series 20 Ball Bearing Block- Single, Stand-Up Loop Top [RF20141]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-series-20-ball-bearing-block-single-stand-up-loop-top-rf20141.webp)
![Ronstan Series 40 Orbit BB Quin Block w/Swivel Shackle [RF48500]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-series-40-orbit-bb-quin-block-w-swivel-shackle-rf48500.webp)

![Ronstan Series 55 Ratchet Mount Orbit Block - Fiddle Becket Swivel [RF56510]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-series-55-ratchet-mount-orbit-block-fiddle-becket-swivel-rf56510.webp)
![Ronstan Wire Block - Tubular Rivet Head w/Nylatron Sheave - 25mm (1") Sheave Diameter [RF418]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-wire-block-tubular-rivet-head-w-nylatron-sheave-25mm-1-sheave-diameter-r.webp)

