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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)
  • Installation Guide
  • Made-To-Order
  • Motor Bracket Unit
  • General Load
  • High Load
  • Grease-injection Type
  • Other F.A. Components
    (Lock nut / Bearing unit)

Support Unit for Ball Screw (General Load)

Product Overview
  • Bearing Combinations and List of Bearings
  • Product Recommendation by Ball Screw Outer Diameters
  • Product Structure & How to order
  • 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 EK-4 23 5 8 FK-4 23 5 8 RN-4 M4 x 0.5
Ø8 5 4 EK-5 25 6 8 FK-5 25 6 8 RN-5 M5 x 0.5
6 4 EK-6 30 8 8 BK-6 30 8 8 　 FK-6 30 8 8 RN-6 M6 x 0.75
Ø10 - Ø12 8 6 EK-8 35 9 10 BK-8 35 9 10 AK-8 30 9 10 FK-8 35 9 10 CK-8 34 9 10 RN-8 M8 x 1/0.75
Ø10 - Ø15 10 8 EK-10 36 15 11 BK-10 39 15 16 AK-10 36 15 11 FK-10 36 15 11 CK-10 36 15 11 RN-10 M10 x 1/0.75
Ø14 - Ø18 12 10 EK-12 36 15 11 BK-12 39 15 14 AK-12 36 15 11 FK-12 36 15 11 CK-12 36 15 11 RN-12 M12 x 1
Ø20 15 12 EK-15 49 20 13 BK-15 40 20 12 AK-15 49 20 13 FK-15 49 20 13 CK-15 49 20 13 RN-15 M15 x 1
Ø25 - Ø28 17 15 BK-17 53 23 17 FK-17 57 23 17 RN-17 M17 x 1
20 17 EK-20 64 25 17 BK-20 53 25 16 AK-20 64 25 17 FK-20 64 25 17 RN-20 M20 x 1
Ø30 - Ø36 25 20 EK-25 76 30 22 BK-25 65 30 19 FK-25 76 30 20 RN-25 M25 x 1.5
Ø40 30 25 BK-30 72 38 25 FK-30 72 38 25 RN-30 M30 x 1.5
Ø45 35 30 BK-35 83 45 28 FK-35 83 45 28 RN-35 M35 x 1.5
Ø50 - Ø55 40 35 BK-40 98 50 35 FK-40 98 50 35 RN-40 M40 x 1.5
Supported Side
Dimensions(mm)
d EF BF AF FF CF A E B F G
Ø8 EF-6 BF-6 FF-6 6 9 5.6 6.9 0.9
Ø10 - Ø12 EF-8 BF-8 AF-8 FF-8 CF-8 6 9 5.6 6.9 0.9
Ø10 - Ø15 EF-10 BF-10 AF-10 FF-10 8 10 7.6 7.9 0.9
Ø14 - Ø18 EF-12 BF-12 AF-12 FF-12 CF-12 10 11 9.6 9.15 1.15
Ø20 EF-15 BF-15 AF-15 FF-15 CF-15 15 13 14.3 10.15 1.15
Ø25 - Ø28 BF-17 FF-17 17 16 16.2 13.15 1.15
EF-20 BF-20 AF-20 FF-20 20 19(16) 19 15.35(13.35) 1.35
Ø30 - Ø36 EF-25 BF-25 FF-25 25 20 23.9 16.35 1.35
Ø40 BF-30 FF-30 30 21 28.6 17.75 1.75
Ø45 BF-35 FF-35 35 22 33 18.75 1.75
Ø50 - Ø55 BF-40 FF-40 40 23 38 19.95 1.95

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