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20 x 20R x 3.5 - 2 SEM-E-S Cylindrical Ball Nut R151217012 Rexroth Ball Nut
20 x 20R x 3.5 - 2 SEM-E-S Cylindrical Ball Nut R151217012 Rexroth Ball Nut

20 x 20R x 3.5 - 2 SEM-E-S Cylindrical Ball Nut R151217012 Rexroth Ball Nut

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R151217012 Rexroth Standard Series Nut, ZEM-E-S Cylindrical, Single Nut, Standard Seal, Tolerance Grades T5, T7, T9
The ZEM-E-S is a cylindrical single ball nut manufactured by Bosch Rexroth for use in precision rolled ball screws SN-R. This series of nuts features a standard seal, selectable axial clearance or reduced clearance, preload of 2%, 3%, or 5%, and is suitable for T5, T7, and T9 tolerance grades.
Key Features
Structure Type: Cylindrical single nut, standard seal (reinforced seal optional).
Applications: Precision rolled ball screws SN-R.
Performance Characteristics: With or with reduced axial clearance, providing 2%, 3%, or 5% preload.
Accuracy Grades: T5, T7, T9.
Special Options: Some models support left-hand threads.
This series is commonly used in industrial linear motion applications requiring high precision and sealing performance.
Rexroth ball screw drive systems have been successfully applied in various fields: machine tools, forming equipment, automation and material handling, woodworking, electrical and electronics, printing and papermaking, injection molding machines, food and packaging industries, medical devices, textile industry, and others.

Item

Specification

Part No.

R151217012

Series

Standard Series

Nut Type

Cylindrical Single Nut ZEM-E-S

Nominal Size [mm]
20 x 20R x 3.5 - 2

Nominal Diameter [mm]

20

Thread Direction

Right-hand

Lead [mm]

20

Ball Diameter [mm]

3.5

Number of Ball Circuits

2

Nut Outer Diameter [mm]

38

Nut Length [mm]

64

Weight [kg]

0.34

Rated Dynamic Load [N]

10900

Rated Static Load [N]

12100

Max. Speed [m/min]

120

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