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290J7 is a standardized industry size
Specifications Bore Size 35mm Housing Style 2-Bolt Flange Block (Large Bolt Holes) Shaft Attachment Eccentric Collar Series 207 Seal Type Silicone Seal with Flinger Material 304 Stainless Steel (Housing)
Specification Value Part Number 3/BK210 Belt Type Banded V-Belt Cross-Section BK Top Width 2
Belt Section A Sub-Type Banded Width 1/2" Thickness 5/16" Length 136 in Number of Bands 9 Material Neoprene Reinforcement Polyester Cord Color Black Temperature Range -30°F to 185°F
BlackStar BK52 1 1/8 - Fixed Bore Sheave - 1 1/8" Bore TL4545 290J7 is a standardized industryThe BlackStar BK52 1 1 8 is a 1 groove fixed bore sheave for B section belts, manufactured from cast iron. Features a 1 1 8" finished bore with keyway and set screws for direct shaft mounting. Specifications Part Number BK52 1 1 8 Product Type Fixed Bore Sheave Number of Grooves 1 Belt Profile B Bore Size 1 1 8" Material Cast Iron Approx. Weight 2. 15 lbs Cross references: Browning BK52 1 1 8, Martin BK52 1 1 8, Maska BK52 1 1 8 Compatible Components
