Rosta 06580004 R38 Tensioning Roller For SE38 Tensioner is a permanently lubricated roller that utilizes premium 2Z C3 shielded bearings. It has a broad operating temperature range of -31° to + 212° degrees Fahrenheit.

R38 Tensioning Roller Dimensions

• Type: R38
• Article Number: 06580004
• Max Speed: 5000 RPM
• Maximum Belt Width: 3.35"
• Dimension (A): 3.35"
• Dimension (B): 3.15"
• Dimension (C): 0.31"
• Dimension (D): 0.98"
• Dimension (E): 0.39"
• Dimension (F): M20
• Torque Hex Nut: 121.7 (lb/ ft)
• Works With Tensioner Type: SE-38
• Weight: 2.54 LBS

Tensioning With Flat Roller on Belt Back

– The diameter of the flat tensioning roller should at least measure 2⁄3 of the diameter of the smallest pulley in the drive.
– The width of the tensioning roller should be at least 20% wider than the overall width of the belt set.
– Installation on the belt back in the slack span, make sure that the belts are maintaining sufficient contact-arc on the driver and driven pulley.