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RONSTAN Series 60 & 75 Orbit Blocks

These exceptionally strong blocks feature the performance Orbit sheave with captive Acetal ball bearings for side thrust loads, eliminating the need for side retainer plates. This reduces weight and offers a wider bearing surface that can accommodate longer TorlonĀ® needles, achieving a super high strength-to-weight ratio. The 75mm webbing block (RF79107) can be used where swivel head and shackle attachment is not required to achieve further weight savings.

  • Sheave: Alloy with captive ball races
  • Bearings: High-compression-strength Carbon Black Acetal; Torlon needle rollers
  • Sheave Size: 2-3/8" (60mm) or 3" (75mm)
  • Line Diameter: Series 60: 1/2" (12mm), Series 75: 9/16" (14mm)
  • Cheek Material/Finish: Anodized aluminum
  • Shackle/Strap Type: Grade 17-4PH stainless steel
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
Series 60 Orbit Block, Single, 2-3/8" Sheave Size, 4,410lb. SWL, 9.2oz. 7298755 RF69100
In stock online.

$344.99

Series 60 Orbit Block, Single Light-Load, 2-3/8" Sheave Size, 1,710lb. SWL, 4.7oz. 7298763 RF69100L
Delivery within 2 - 3 weeks.

$219.99

Series 75 Orbit Block, Single, 3" Sheave Size, 5,400lb. SWL, 12oz. 7298771 RF79100
In stock online.

$369.99

Series 75 Orbit Block, Single with Webbing, 3" Sheave Size, 5,400lb. SWL, 8.1oz. 7298789 RF79107
Limited availability.

Orig. $284.99

Now  $255.88

Series 75 Orbit Block, Halyard Single, 3" Sheave Size, 5,400lb. SWL, 8.9oz. 7298797 RF79108
In stock online.

$364.99

Product Description

These exceptionally strong blocks feature the performance Orbit sheave with captive Acetal ball bearings for side thrust loads, eliminating the need for side retainer plates. This reduces weight and offers a wider bearing surface that can accommodate longer TorlonĀ® needles, achieving a super high strength-to-weight ratio. The 75mm webbing block (RF79107) can be used where swivel head and shackle attachment is not required to achieve further weight savings.

  • Sheave: Alloy with captive ball races
  • Bearings: High-compression-strength Carbon Black Acetal; Torlon needle rollers
  • Sheave Size: 2-3/8" (60mm) or 3" (75mm)
  • Line Diameter: Series 60: 1/2" (12mm), Series 75: 9/16" (14mm)
  • Cheek Material/Finish: Anodized aluminum
  • Shackle/Strap Type: Grade 17-4PH stainless steel

Specs

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