Ronstan RF280 30mm Series 30 Utility Block – Single loop head pulley with stainless steel cheeks and acetal sheave Ronstan RF280 30mm Series 30 Utility Block – Single loop head pulley with stainless steel cheeks and acetal sheave
Ronstan RF280 30mm Series 30 Utility Block – Single loop head pulley with stainless steel cheeks and acetal sheave

Ronstan

Ronstan RF280 Series 30 Single Loop Head Pulley 30mm – Utility Block

$17.40 $13.90 Save 20%
Tax included.

The Ronstan RF280 Series 30 Single Loop Head Pulley (30mm) is a lightweight, versatile utility block designed for a wide range of sailing and onboard applications.

Featuring a 30mm acetal sheave and stainless steel cheeks, this pulley delivers smooth operation, durability, and long service life with minimal maintenance—making it ideal for both recreational and performance sailing.

Designed as part of Ronstan’s Series 30 utility block range, the RF280 provides a practical balance between strength, weight, and cost, making it a popular choice for dinghies, trailer yachts, and general-purpose onboard use.

The loop head attachment allows for simple and flexible rigging, whether lashing directly, attaching with a shackle, or integrating into existing systems. Hollow rivets also allow the addition of a becket for increased purchase systems, enhancing versatility.

With a maximum working load of around 300kg and breaking load of 600kg, this compact block offers reliable performance for everyday sailing loads while remaining extremely lightweight.

Key Features

  • 30mm acetal sheave – smooth and efficient line handling
  • Loop head attachment – simple, flexible rigging options
  • Stainless steel cheeks – corrosion-resistant durability
  • Lightweight design (~20g) – minimal added weight
  • Maintenance-free construction – long service life
  • Economical utility block – excellent value for general use
  • Becket-compatible design – can be adapted for extra purchase

Specifications

  • Brand: Ronstan
  • Model: RF280
  • Series: 30 Utility Block
  • Product Type: Single pulley / utility block
  • Sheave Diameter: 30mm
  • Max Rope Diameter: 8mm
  • Maximum Working Load: 300kg
  • Breaking Load: 600kg
  • Weight: Approx. 20g
  • Materials:
    • UV-stabilised acetal sheave
    • Stainless steel cheeks
  • Head Type: Loop head

Ideal Applications

  • Vang and cunningham systems
  • Trapeze retrievers
  • Leech line tackles
  • General-purpose control lines
  • Utility rigging on yachts and dinghies

This block is ideal where you need a simple, reliable, and cost-effective pulley for everyday sailing tasks.

Why Buy from Barton Marine NZ?

  • Trusted NZ sailing hardware supplier
  • Fast nationwide delivery
  • Genuine Ronstan marine products
  • Ideal for NZ boating conditions

Pro Tip 

  • Use for general-purpose control lines where high load blocks aren’t required
  • Add a becket via hollow rivet to increase mechanical advantage
  • Ideal upgrade from worn or basic plastic pulleys