Sparx Grinding Ring ES-Radius

The Sparx Radius Grinding Ring produces a precise, traditional hollow grind for ice hockey and goalie skates. By selecting the right sharpening radius, you can adjust the performance of your skate blades to suit your skating style, body weight and personal preferences.

Designed for automatic Sparx skate sharpening machines, these Radius Rings combine consistent sharpening results with easy operation. According to Sparx, every grinding ring is laser-measured and inspected to ensure the accuracy of the selected sharpening geometry.

Customized Hollow Grinding for Better Control and GlideThe Radius of Hollow (ROH) refers to the radius of the concave groove between the two edges of an ice hockey skate blade. The selected radius directly influences how much grip the edges provide and how easily the blades glide across the ice.

A smaller radius creates a deeper hollow with more pronounced edges. This provides greater bite for sharp turns, quick changes of direction and powerful stops.

A larger radius creates a shallower hollow, reducing edge bite while allowing smoother and easier gliding across the ice.

Which Sparx Sharpening Radius Is Right for You?The ideal choice depends on body weight, playing position, skating technique and individual preferences.

3/8" (9.5 mm) and 7/16" (11.1 mm): Deeper hollows for players who prefer stronger edge grip and increased bite on the ice.

• 1/2" (12.7 mm): A widely used all-round hollow offering a balance between grip and glide. Sparx recommends this radius as a starting point, particularly for younger and lighter players.
  
• 5/8" (15.9 mm): A shallower hollow for players looking for improved glide. According to Sparx, this option is particularly suitable for taller and heavier players.
  
• 7/8" (22.2 mm) and 1" (25.4 mm): Significantly shallower hollows for players who prioritize smooth gliding with less edge bite.
  
• Goalie Skates: According to Sparx, many goaltenders prefer radii between 3/8" and 1/2", depending on their desired edge grip and individual technique.
  

Easy Ring Replacement and Automatic SharpeningSimply select your preferred sharpening radius, insert the corresponding ring into a compatible Sparx sharpening machine and start the sharpening process. The machine automatically sharpens the skate blades using the selected hollow.

The Sparx Radius Ring can be used for both player and goalie skates, making it suitable for different ice hockey sharpening requirements.

Long Service Life with Intelligent Remaining-Life MonitoringAccording to Sparx, one grinding ring can sharpen approximately 60 pairs of skates on average when using three sharpening passes per skate.

The actual number of sharpenings depends on the number of passes required for each sharpening session.

An integrated chip tracks the remaining service life of the grinding ring. The Sparx sharpener displays the remaining life and notifies the user when the ring needs to be replaced.

Key Features at a Glance

Traditional Hollow Grind: Produces the classic Radius of Hollow (ROH) for ice hockey and goalie skates.

• Individual Radius Selection: Different sharpening radii allow players to customize edge grip, control and glide.
  
• Precise Sharpening: According to the manufacturer, every ring is laser-measured and inspected for the required sharpening geometry.
  
• Automatic Sharpening: Works with the automatic sharpening system of compatible Sparx machines.
  
• Excellent Service Life: Approximately 60 pairs of skates with three sharpening passes per skate, according to Sparx.
  
• Integrated Memory Chip: Monitors remaining ring life and enables the sharpener to display the remaining capacity.
  
• Easy Replacement: The grinding ring can be exchanged for a new ring or a different sharpening radius.
  
• Compatibility: Designed for Sparx ES100, ES200 and Sparx Sharpener 3 (ES300).
  
• Player and Goalie Skates: Suitable for sharpening both standard ice hockey skates and goalie skates.
  

Available Sharpening Radii

1/4" – 6.4 mm

• 5/16" – 7.9 mm
  
• 3/8" – 9.5 mm
  
• 7/16" – 11.1 mm
  
• 1/2" – 12.7 mm
  
• 9/16" – 14.3 mm
  
• 5/8" – 15.9 mm
  
• 11/16" – 17.5 mm
  
• 3/4" – 19.1 mm
  
• 13/16" – 20.6 mm
  
• 7/8" – 22.2 mm
  
• 15/16" – 23.8 mm
  
• 1" – 25.4 mm
  
• 1 1/8" – 28.6 mm
  
• 1 1/4" – 31.8 mm
  
• 1 1/2" – 38.1 mm
  

Technical Product Information

Brand: Sparx

• Model: Radius Ring
  
• Sharpening Type: Traditional Hollow Grind (Radius of Hollow)
  
• Compatible Sharpeners: Sparx ES100, ES200 and ES300
  
• Service Life: Approximately 60 pairs of skates with three sharpening passes per skate, according to the manufacturer
  
• Monitoring: Integrated chip for tracking remaining ring life
  
• Package Contents: 1 Sparx Radius Grinding Ring in the selected radius
  

Conclusion:The Sparx Radius Grinding Ring is an excellent choice for ice hockey players and goaltenders who want a traditional hollow grind on their skate blades. The wide selection of sharpening radii allows players to customize their skating performance. Precise grinding geometry, convenient operation and automatic remaining-life monitoring make the Radius Ring a practical accessory for compatible Sparx skate sharpening machines.

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