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)

Installation Guide Made-To-Order

Support Unit for Ball Screw (General Load)

Product Overview
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.