Return rollers Premium

Return rollers for highest loads with particularly high requirements:
 

• Roller tube manufactured from longitudinally welded steel tubes  acc. to EN 10305-3 with restricted tolerances (Küpper standard);
• Material of the roller tube: steel S235JR acc. to EN 10025-2
• Forged bearing housing made of steel C15 acc. to EN 10267-2 or S235JR acc. to EN 10025-2
• Fit of the bearing seat in the bearing housing: IT7 acc. to EN ISO 286-1
• Shafts made of solid material acc. to EN 10083-2 or bending resistant hollow shaft made of precision tube with welded-in shaft ends
• Fit of the bearing seat on the shaft: IT6 acc. to EN ISO 286-1
• Deep groove ball bearing AKT acc. to DIN 625-1, 2Z shields, plastic cage, lubricated for life, greasing designed for specific applications
• Bearing sizes 6306 - 6310
• ISO tolerance class 5 (P5) acc. to DIN 620-2
• Radial internal clearance for deep groove ball bearings C4H acc. to DIN 620-4
• Additional inner seal made from high-quality material
• QLR hybrid seal: patented, lubricated for life, particularly effective when exposed to splash water and dust
• Rubber roller protector extends the service life of the QLR seal additionally
• Optionally with weather shield (protection against blocking of the rollers by jammed stones)
• Casted PU coating
   

Support ring arrangement

Legend for U-series support ring arrangements see here.

Coating

Other sizes and desings on request.