Product
Support Unit
For Ball screw

Korean made support unit, ball screw components, support unit varieties, support unit endblock, support block, support end block, end block for ball screw, ball screw end blocks , support block for ball screw, ball screw accessories, ISO 9001, ISO 14001, Korean made components, IT components, mechanical components, motion components, motion accessories, motion control, motion control components, semi conductor components, display machine components, small sized machine components, small mechanical components, machine components, factory automation part

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)
  • General Load
  • High Load
  • Grease-injection Type
  • Other F.A. Components
    (Lock nut / Joint unit / Bearing unit)

Support Unit for Ball Screw (General Load)

Product Overview
  • Installation Guide
  • Bearing Combinations
    and List of Bearings
  • Product Recommendation
    by Ball Screw Outer Diameters
  • Product Structure & How to order
  • Made-To-Order Process
  • Recommended Shape of
    Ball Screw Shaft-end

Bearing Combinations and List of Bearings

Bearing Combinations
  1. Arrangement types of angular contact ball bearing combinations
    1. 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.
    2. 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.
List of Bearings (Fixed Side)
Bearing Inner
dia.(mm)
Model Bearing
EK BK AK FK CK P5 C8 P0-C7
Ø4 EK4 FK4 AC-4-12-DF 634ZZ
Ø5 EK5 FK5 AC-5-14-DF 625ZZ
Ø6 EK6 FK6 706ATYNDFMP5 706ATYNDFC8 606ZZ
BK6 EN6
Ø8 EK8 FK8 CK8 708ATYNDFMP5 708ATYNDFC8 EN8/BA22-1
BK8 EN8/BA22-1
AK8 708ATYNDFMP5
Ø10 EK10 BK10 AK10 FK10 CK10 7000ATYNDFMP5 7000AWDFM 7000AW
Ø12 EK12 BK12 AK12 FK12 CK12 7001ATYNDFMP5 7001AWDFM 7001AW
Ø15 EK15 BK15 AK15 FK15 CK15 7002ATYNDFMP5 7002AWDFM 7002AW
Ø17 BK17 FK17 7203ATYNDFMP5 7203AWDFM 7203AW
Ø20 EK20 AK20 FK20 7204ATYNDFMP5 7204AWDFM 7204AW
BK20 7004ATYNDFMP5 7004AWDFM 7004AW
Ø25 EK25 BK25 FK25 7205ATYNDFMP5 7205AWDFM 7205AW
Ø30 BK30 FK30 7206ATYNDFMP5 7206AWDFM 7206AW
Ø35 BK35 FK35 7207ATYNDFMP5 7207AWDFM 7207AW
Ø40 BK40 FK40 7208ATYNDFMP5 7208AWDFM 7208AW
List of Bearings (Supported Side)
Bearing Inner
dia.(mm)
Model Bearing
EF BF AF FF CF
Ø6 EF6/EF8 BF6/BF8 AF8 FF6/FF8 CF8 606ZZ
Ø8 EF10 BF10 AF10 FF10 608ZZ
Ø10 EF12 BF12 AF12 FF12 CF10/CF12 6000ZZ
Ø15 EF15 BF15 AF15 FF15 CF15 6002ZZ
Ø17 BF17 FF17 6203ZZ
Ø20 EF20 AF20 FF20 6204ZZ
BF20 6004ZZ
Ø25 EF25 BF25 FF25 6205ZZ
Ø30 BF30 FF30 6206ZZ
Ø35 BF35 FF35 6207ZZ
Ø40 BF40 FF40 6208ZZ