Types

• Type GG: Runner with thread, on both sides
• Type DG: Runner 1x with countersunk and 1x with thread
• Type DD: Runner with countersunk, on both sides

Rail / Runner

Heat treatable steel

• Zinc plated, blue passivated

• Raceways hardened

Balls

Anti-friction bearing steel, hardened

Ball cage

Steel, zinc plated

• Blank rivets, Stainless Steel (h₁ = 28 and 35)

• Screws, Steel zinc plated (h₁ = 43)