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)

Grease-Injection Type Support Unit download

Structure
BK-G
FK-G
SWBK-G
  • Advance design with a nipple being attached and a passage carved on the bearing cover for a easier grease refill
  • Prevention of foreign material and leak of grease by the inner oil-seal rings
  • Accompanied by a high accuracy lock-nut and collars(spacer)
Features of BK-G, FK-G & SWBK-G Series
  • Easy and Simple Grease Injection : This structure does not require the mounted Support unit to be detached from the ball screw and grease can be simply injected through the nipple on the body.
  • Enhanced Lubrication Performance & Reduced Bearing Friction : In terms that it is possible to frequently refill grease, it helps to reduce friction/abrasion of bearing and eventually extends the lifespan.
  • When a Support unit is mounted at a volatile circumstance or used with vertical drive motors, grease usually gets disappeared and lubrication of bearing doesn’t run smoothly. Thus, this Grease injection-type Support Unit series lets you refill grease easily and solves this issue.
How To Inject(Refill) Grease

While a Support Unit is mounted, you may inject grease through the nipple on the Support unit body, rotating the ball screw slowly.

How to Order
Model-Precision grade mark-Surface Treatment

Precision
grade
mark
Mark Bearing precision grade Preload
P5 P5 Medium
C8 General Medium
P0-C7 General Light

Surface
Treatment
Mark Surface Treatment
No mark Black Oxide
RA Low temperature Black
Chrome Plating (Raydent)
List of bearings
Bearing Inner
dia. (mm)
Model Bearing
BK-G FK-G SWBK-G P5 C8 P0-C7 TAC(SWBK-G)
17 BK17-G FK17-G SWBK17-G 7203ATYNDFMP5 7203AWDFM 7203AW 17TAC47C
20 FK20-G SWBK20-G 7204ATYNDFMP5 7204AWDFM 7204AW 20TAC47C
BK20-G 7004ATYNDFMP5 7004AWDFM 7004AW
25 BK25-G FK25-G SWBK25-G 7205ATYNDFMP5 7205AWDFM 7205AW 25TAC 62C
30 BK30-G FK30-G SWBK30-G 7206ATYNDFMP5 7206AWDFM 7206AW 30TAC 62C
35 BK35-G FK35-G SWBK35-G 7207ATYNDFMP5 7207AWDFM 7207AW 35TAC 72C
40 BK40-G FK40-G SWBK40-G 7208ATYNDFMP5 7208AWDFM 7208AW 40TAC 72C
Recommended Shape Of Ball Screw Shaft-End (Fixed Side)
Drawing
Demensions(mm) Lock-nut
d A B BK FK Model Size
M x pitch
Model E F S Model E F S
Ø25 - Ø28 17 15 BK17-G 65 23 17 FK17-G 67 23 17 RN17 M17 x 1
20 17 BK20-G 65 25 17 FK20-G 73 25 17 RN20 M20 x 1
Ø30 - Ø36 25 20 BK25-G 80 30 20 FK25-G 86 30 20 RN25 M25 x 1.5
Ø40 30 25 BK30-G 87 38 25 FK30-G 87 38 25 RN30 M30 x 1.5
Ø45 35 30 BK35-G 93 45 28 FK35-G 93 45 28 RN35 M35 x 1.5
Ø50 - Ø55 40 35 BK40-G 114 50 35 FK40-G 114 50 35 RN40 M40 x 1.5
Dimensions(mm) Lock-nut
d A B SWBK Model Size
M x pitch
Model E F S
Ø25 - Ø28 17 15 SWBK17-G DF 93 23 22 HLRN17 M17 x 1
DFD 108
20 17 SWBK20-G DF 93 25 24 HLRN20 M20 x 1
DFD 108
Ø30 - Ø36 25 20 SWBK25-G DF 98 30 25 HLRN25 M25 x 1.5
DFD 113
Ø40 30 25 SWBK30-G DF 98 38 25 HLRN30 M30 x 1.5
DFD 113
Ø45 35 30 SWBK35-G DF 101 45 27 HLRN35 M35 x 1.5
DFD 116
DFF 131
Ø50 - Ø55 40 35 SWBK40-G DF 106 50 32 HLRN40 M40 x 1.5
DFD 121
DFF 136