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Circular Linear Bearing KBF
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ISUTAMI BEARINGS

Circular Linear Bearing KBF

Circular Linear Bearing KBF
ISUTAMI KBF circular flange linear bearings, also known as KBF circular flange linear ball bearings or KBF circular flange linear bushing bearings. KB is the code name for the European standard series in linear bearings. F is a shorthand for circular flange. It is suitable for European markets using metric units, such as Germany and France.

KBF circular flange linear bearing, its bushing and steel balls are made of high carbon bearing steel. The ball retainer is made of metal steel, stainless steel or POM material. The retaining ring, usually represented by U or P, is made of NBR material.
Circular Linear Bearing KBF
ISUTAMI KBF circular flange linear bearings, also known as KBF circular flange linear ball bearings or KBF circular flange linear bushing bearings. KB is the code name for the European standard series in linear bearings. F is a shorthand for circular flange. It is suitable for European markets using metric units, such as Germany and France.

KBF circular flange linear bearing, its bushing and steel balls are made of high carbon bearing steel. The ball retainer is made of metal steel, stainless steel or POM material. The retaining ring, usually represented by U or P, is made of NBR material.

Circular Linear Bearing KBF Size Chart

Circular Linear Bearing KBF

Bearing No. Number
of Ball
Rows
Main Dimensions Squa-
Reness
Eccen-
(Max.)
Basic Load Rating Weight(Kg)
Inscribed Circle Outer Diameter Length Flange Hole For Attachment DYNAMIC
Cr(kgf)
STATIC
Co(kgf)
dr Tolerance D Tolerance L Tolerance D1 K H Φ d1 d2 h
KBF5 4 5 +0.008
0
12 0
-0.008
22 0
-0.2
28 22 5 20 3.5 6 3.1 0.012 0.012 21 27
KBF8 4 8 16 25 32 25 5 24 3.5 6 3.1 27 41 0.039
KBF10 4 10 19 0
-0.009
29 40 30 6 29 4.5 7.5 4.1 38 56 0.055
KBF12 4 12 22 32 42 32 6 32 4.5 7.5 4.1 52 80 0.790
KBF16 5 16 +0.009
-0.001
26 36 46 35 6 36 4.5 7.5 4.1 59 91 0.106
KBF20 5 20 32 0
-0.011
45 54 42 8 43 5.5 9 5.1 0.015 0.015 88 140 0.171
KBF25 6 25 +0.011
-0.001
40 58 0
-0.3
62 50 8 51 5.5 9 5.1 100 160 0.308
KBF30 6 30 47 68 76 60 10 62 6.6 11 6.1 160 280 0.594
KBF40 6 40 +0.013
-0.002
62 0
-0.013
80 98 75 13 80 9 14 8.1 0.017 0.017 220 410 1.098
KBF50 6 50 75 100 112 88 13 94 9 14 8.1 390 810 1.670
KBF60 6 60 90 0
-0.015
125 0
-0.4
134 106 18 112 11 17.5 10.8 0.020 0.020 480 1000 3.000

Circular Linear Bearing KBF Features

The ball retainer is mounted inside the bushing together with the steel balls and sealed with a retaining ring from one side or both sides of the bushing.
KBF round flange linear bearing bushing surface is complete and seamless, there is no outer stop groove, and a circular flange at one end of the bushing, with four circular connecting holes evenly distributed in the flange, for fixing the bearing. The ball row number of the KBF European series supplied by ISUTAMI varies according to the bearing size, and ranges from 4 to 6. Inner diameter (dr) range and tolerance, outer diameter (D) range and tolerance, length (L) range and tolerance, maximum radial eccentricity, basic dynamic load rating (C) range, basic static load rating (Co) range, etc.,are all basically the same as KBK square flange linear bearing, KB standard linear bearing and KB-AJ adjustment linear bearing. The specific parameters are shown in the table.

In addition, the KBF circular flange linear bearing, its flange diameter (D1) is larger than the diameter of the non-flanged side, the range is 28-134mm; the flange height (H) range is 5-18. The weight is larger than the KB standard linear bearing of the same specification.

The BKF circular flange linear bearing has a round flange with a bushing bearing as a whole, and the corresponding components make the axial positioning simple. It does not need to be fixed in the matching bearing pillow blocks like the non-flanged linear bearing. It becomes very economical and time-saving, and it has also reduced the overall weight of the linear bearing assembly as well as smoothed the operation.

Unlike ball bearings, the basic static load rating of BKF circular flange linear bearings is greater than the basic dynamic load rating, and as the size increases, this value gap continues to expand, even up to 2 times.

Flange bearings are suitable for all kinds of industrial equipment, small rotary motors, office equipment, micro motor soft drives, pressure rotors, dental drills, hard disk motors, stepper motors, video recorder drums, toy models, fans, pulleys, rollers, In transmission equipment, entertainment equipment, robots, medical equipment and other products.

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