Ball screw single nut with flange FEM-E-B 20x5Lx3-4 - Bosch Rexroth R155211083

On a ball screw assembly with a nominal screw diameter of 20 mm and a 5 mm lead (left-hand), this single nut with flange FEM-E-B is the driven nut: every turn of the screw moves the attached machine part by 5 mm, with a dynamic load capacity of 17200 N. The flange with hole pattern BB2 bolts directly to the carriage or into an MGD steel nut housing.

It belongs to the Bosch Rexroth standard series. Permissible values are up to 30 m/min linear speed and operating temperatures from -10 °C to +80 °C.

Benefits

• Load capacities: dynamic C = 17200 N, static C0 = 21500 N (valid for tolerance grades T3 and T5)
• 5 mm lead, left-hand: 5 mm travel per screw revolution
• 4 ball track turns with 3 mm balls
• Standard seal fitted at the factory keeps dirt off the ball track
• Hole pattern BB2, matches the MGD nut housing
• Linear speed up to 30 m/min, operation from -10 °C to +80 °C

Installation note

The nut only runs on a screw of the same nominal size 20 x 5L x 3 - 4. A complete axis also needs fixed and floating bearings for the screw ends in the matching diameter; the fixed bearing is secured with a slotted nut.