Support Unit For Ball screw
Support unit for ball screw helps to support each shaft-ends of
ball screw. We, S.I.M provides diverse options according to sizes,
loads and purposes for our customers’ best convenience.
Support Unit for Ball Screw (Index)
Motor Bracket Unit
Product Overview
Structure
Fixed Side
- Full range with high accuracy and without runout, achieved by applying an adequate preload in advance.
- Various product type options:
- – Support unit mounted type / Bearing mounted type
- – Clean (closed) type / Open type
- Accompanied by high-accuracy lock-nut and collars (spacer).
Supported Side
- Accompanied by a deep-groove ball bearing and a snap-ring.
- The damper-attached type is optional.
Bearing Combinations
1. Assemble the table with the nut bracket of ball screw.
- DB combination (back to back): The large distance between the effective load centers results in higher rigidity at the moment load. However if accuracy of housing is not enough, it may produce damage e.g. flaking at a earlier stage due to the increased internal load. Preload is determined by torque when the user fastens the lock-nut.
- DF combination (face to face): The small distance between effective load centers limits bearing capacity to sustain moment load, however it performs at a better level to absorb the margin of assembly error. Preload is determined at maker’s assembly of bearing cover, thus this way allows easier self-management for users.
2. Standard arrangement type of Sung-il products is DF combination.
- In any case DB combination type is requested, please contact Sung-il Customer Service team for further assistance.
