ISUTAMI BEARINGS
Long Linear Bearing KB-L
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ISUTAMI BEARINGS

Long Linear Bearing KB-L

Long Linear Bearing KB-L
ISUTAMI KB-L long linear bearing, also known as KB-L long linear ball bearing or KB-L long linear bushing bearing. KB is the abbreviation of the metric series among the linear bearing. L is the abbreviation of long. It is suitable for European markets, such as Germany and France, etc.

KB-L long linear bearing, the material of both bushing and steel ball is high carbon bearing steel. The ball retainer is made of steel or POM resin, and the sealing ring, usually represented by U or P, is made of NBR.
Long Linear Bearing KB-L
ISUTAMI KB-L long linear bearing, also known as KB-L long linear ball bearing or KB-L long linear bushing bearing. KB is the abbreviation of the metric series among the linear bearing. L is the abbreviation of long. It is suitable for European markets, such as Germany and France, etc.

KB-L long linear bearing, the material of both bushing and steel ball is high carbon bearing steel. The ball retainer is made of steel or POM resin, and the sealing ring, usually represented by U or P, is made of NBR.

Long Linear Bearing KB-L Size Chart

Open Linear Bearing KB-OP

Bearing No. Number
of Ball
Rows
Main Dimensions Eccen-
Tiricity
(MAX.)
Basic Load Rating Weight
(kg)
Inscribed
Circle
Diameter
Outer Diameter Length Outer Locking Groove W DYNAMIC
Cr(kgf)
STATIC
Co(kgf)
dr Tolerance D Tolerance L Tolerance B Tolerance D1
KB8L 4 8 +0.009
-0.001
16 0
-0.009
46 0
-0.3
33 0
-0.3
15.2 1.1 0.015 43 82 36
KB10L 4 10 19 0
-0.011
55 44 18 1.3 60 112 59
KB12L 4 12 22 61 45.8 21 1.3 83 160 78
KB16L 5 16 +0.011
-0.001
26 68 49.8 24.9 1.3 94 182 97
KB20L 5 20 32 0
-0.013
80 61 30.5 1.6 0.017 140 280 169
KB25L 6 25 +0.013
-0.002
40 112 0
-0.4
82 0
-0.4
38 1.85 160 320 414
KB30L 6 30 47 123 104.2 44.5 1.85 255 560 586
KB40L 6 40 +0.016
-0.004
62 0
-0.015
151 121.2 59 2.15 0.020 350 820 1310
KB50L 6 50 75 192 155.2 72 2.65 620 1622 2500
KB60L 6 60 90 0
-0.020
209 170 86.5 3.15 0.025 770 2040 3700

Long Linear Bearing KB-L Features

The ball retainer is mounted inside the extended bushing together with the steel balls, and sealed with a retaining ring (seal) from one side or both sides of the bushing to form a complete KB-L long linear bearing.

The bushing of KB-L long linear bearing is fully closed, with two outer stop grooves for the fixed bearing bushing. The number of ball rows of the KB European series supplied by ISUTAMI varies according to the bearing size, ranging from 4-6 columns;
The inner diameter (dr) range is 8-60mm, and the inner diameter tolerance range varies with the inner diameter, which is mainly divided into four intervals: -0.001~+0.009mm, -0.001~+0.011mm, -0.002~+0.013mm, -0.004~+0.016 mm;
The outer diameter (D) range is 16-90mm, and the outer diameter tolerance range varies with the outer diameter, which is mainly divided into five intervals: -0.009~0mm, -0.011~0mm, -0.013~0mm, -0.015~0mm, -0.02~ 0mm;
The length (L) range is 46-209mm, and the length tolerance range varies with length, mainly divided into two intervals of -0.3~0mm and -0.4~0mm;
The maximum radial eccentricity is divided into four grades of 0.015mm, 0.017mm, 0.02mm and 0.025mm;
The basic dynamic load rating (C) ranges from 43 to 770 kgf (basic rated life is 50 km);
The basic static load rating (Co) range is 82-2040kgf (basic rated life is 50km);
Basically, its load rating is twice as large as the KB standard bearing.

KB-L long linear bearings are generally mounted to the corresponding linear bearing housings for use with the linear shaft.

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