Bearing Unit BK

The BK-support unit, our quintessential rectangular fixed-side component tailored for the SFS series of ball screws. Equipped with a solitary fixed axial radial bearing, it’s complemented by a locking nut and spacer for seamless mounting onto the ball screw.

Technical info

Technical dimensions

System Dimensions

Load & Moment

Mounting Hole

Part No. Part Name Qty
1 Housing 1
2 Bearing 2
3 Holding lid 1
4 Spacer 2
5 Seal 2
6 Lock nut 1
7 (M) Hexagon socket-headsetscrew 1

 

Model No. Ball screw size

Shaft

Ød1

 C1 C2 M T

Weight

Kg
BK10 12 10 13 6 M3 16 0.4
 BK12  16  12  13  6  M4  19  0.45
 BK15  20  15  15  6  M4  22  0.6
 BK20  25  20  19  8  M4  30  1.3
 BK25  32  25  22  10  M5  35  2.4
 BK30  40  30  23  11  M6  40  3.4
 Bk40  50  40  33  14  M8  50  6.8

 

Part No. Part Name Qty
1 Housing 1
2 Bearing 2
3 Holding lid 1
4 Spacer 2
5 Seal 2
6 Lock nut 1
7 (M) Hexagon socket-headsetscrew 1

 

Model No. L L1 L2 b h B1 H1
+/-0.02 +/-0.02
BK10 25 5 34 30 22 34 32.5
 BK12  25  5  34  30  25  34  32.5
 BK15  27  6  38  35  28  40  38
 BK20  35  7  51  44  34  52  50
 BK25  42  12  63  53  48  64  70
 BK30  45  14  70  64  51  76  78
 Bk40  61  18  91  80  60  100  90

 

Model No. Static load Capacity (N) Max.Axial Dynamic. Load(N) Max. Recommended Axial Dyn.Load (N)
Bk10 5300 1950 975
Bk12 6100 2170 1085
Bk15 7000 2400 1200
BK20 13400 4280 2140
BK25 20900 7090 3545
BK30 30000 9390 4695
BK40 47000 18340 9170

 

Part No. Part Name Qty
1 Housing 1
2 Bearing 2
3 Holding lid 1
4 Spacer 2
5 Seal 2
6 Lock nut 1
7 (M) Hexagon socket-headsetscrew 1

 

Model No. E P d2 X Y Z
BK10 15 46 5.5 3.6 10.8 5
 BK12  18  46 5.5  6.6  10.8  1.5
 BK15  18  54 5.5  6.6  11  6.5
 BK20  22  70 6.6  9  14  8.5
 BK25  33  85 9  11  17  11
 BK30  33  102 11  14  20  13
 Bk40  37  130 14  18  26  17.5

 

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