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

Recommended Shape Of Ball Screw Shaft-End

Fixed Side
Dimensions(mm) Lock-nut
d A B EK BK AK FK CK Model Size
M x pitch
Model E F S Model E F S Model E F S Model E F S Model E F S
Ø6 4 3 EK4 23 5 8 FK4 23 5 8 RN4 M4 x 0.5
Ø8 5 4 EK5 25 6 8 FK5 25 6 8 RN5 M5 x 0.5
6 4 EK6 30 8 8 BK6 30 8 8   FK6 30 8 8 RN6 M6 x 0.75
Ø10 - Ø12 8 6 EK8 35 9 10 BK8 35 9 10 AK8 30 9 10 FK8 35 9 10 CK8 34 9 10 RN8 M8 x 1/0.75
Ø10 - Ø15 10 8 EK10 36 15 11 BK10 39 15 16 AK10 36 15 11 FK10 36 15 11 CK10 36 15 11 RN10 M10 x 1/0.75
Ø14 - Ø18 12 10 EK12 36 15 11 BK12 39 15 14 AK12 36 15 11 FK12 36 15 11 CK12 36 15 11 RN12 M12 x 1
Ø20 15 12 EK15 49 20 13 BK15 40 20 12 AK15 49 20 13 FK15 49 20 13 CK15 49 20 13 RN15 M15 x 1
Ø25 - Ø28 17 15 BK17 53 23 17 FK17 57 23 17 RN17 M17 x 1
20 17 EK20 64 25 17 BK20 53 25 16 AK20 64 25 17 FK20 64 25 17 RN20 M20 x 1
Ø30 - Ø36 25 20 EK25 76 30 22 BK25 65 30 19 FK25 76 30 20 RN25 M25 x 1.5
Ø40 30 25 BK30 72 38 25 FK30 72 38 25 RN30 M30 x 1.5
Ø45 35 30 BK35 83 45 28 FK35 83 45 28 RN35 M35 x 1.5
Ø50 - Ø55 40 35 BK40 98 50 35 FK40 98 50 35 RN40 M40 x 1.5
Supported Side
Dimensions(mm)
d EF BF AF FF CF A E B F G
Ø8 EF6 BF6 FF6 6 9 5.6 6.9 0.9
Ø10 - Ø12 EF8 BF8 AF8 FF8 CF8 6 9 5.6 6.9 0.9
Ø10 - Ø15 EF10 BF10 AF10 FF10 8 10 7.6 7.9 0.9
Ø14 - Ø18 EF12 BF12 AF12 FF12 CF12 10 11 9.6 9.15 1.15
Ø20 EF15 BF15 AF15 FF15 CF15 15 13 14.3 10.15 1.15
Ø25 - Ø28 BF17 FF17 17 16 16.2 13.15 1.15
EF20 BF20 AF20 FF20 20 19(16) 19 15.35(13.35) 1.35
Ø30 - Ø36 EF25 BF25 FF25 25 20 23.9 16.35 1.35
Ø40 BF30 FF30 30 21 28.6 17.75 1.75
Ø45 BF35 FF35 35 22 33 18.75 1.75
Ø50 - Ø55 BF40 FF40 40 23 38 19.95 1.95

※ The values in brackets are for model no. BF-20.