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Adjustment Linear Bearing KB-AJ
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ISUTAMI BEARINGS

Adjustment Linear Bearing KB-AJ

Adjustment Linear Bearing KB-AJ
ISUTAMI KB-AJ adjustment linear bearing is also known as KB-AJ adjustment linear ball bearing or KB-AJ adjustment linear bushing bearing. KB is the code name of the metric series for linear bearings. AJ is the abbreviation of adjustment. It is suitable for European markets, such as Germany and France, etc.

The material of KB-AJ adjustment linear bearing, both of bushing and steel ball are made of high carbon bearing steel. The ball retainer is made of steel or POM material. The retaining ring, also called sealing ring, normally indicated by U or P, is made of NBR material. The ball retainer is mounted inside the linear bushing together with the steel balls and sealed with a seal ring from one side or both sides of the bushing.
Adjustment Linear Bearing KB-AJ
ISUTAMI KB-AJ adjustment linear bearing is also known as KB-AJ adjustment linear ball bearing or KB-AJ adjustment linear bushing bearing. KB is the code name of the metric series for linear bearings. AJ is the abbreviation of adjustment. It is suitable for European markets, such as Germany and France, etc.

The material of KB-AJ adjustment linear bearing, both of bushing and steel ball are made of high carbon bearing steel. The ball retainer is made of steel or POM material. The retaining ring, also called sealing ring, normally indicated by U or P, is made of NBR material. The ball retainer is mounted inside the linear bushing together with the steel balls and sealed with a seal ring from one side or both sides of the bushing.

Adjustment Linear Bearing KB-AJ Size Chart

Adjustment Linear Bearing KB-AJ

Bearing No. Number
of Ball
Rows
Mian Dimensions Eccen-
Tiricity
(MAX.)
Basic Load Rating Weight
(kg)
Inscribed
Circle
Diameter
Outer
Diameter
Length Outer Locking
Groove
W h h1 θ DYNAMIC
Cr(kgf)
STATIC
Co(kgf)
dr Tolerance D Tolerance L Tolerance B Tolerance D1
KB5AJ 4 5 +0.008
0
12 0
-0.008
22 0
-0.2
14.5 0
-0.2
11.5 1.1 1 0.012 21 27
KB8AJ 4 8 16 25 16.5 15.2 1.1 1 27 41 0.020
KB10AJ 4 10 19 0
-0.009
29 22 18 1.3 1.5 6.8 80° 38 47 0.029
KB12AJ 4 12 22 32 22.9 21 1.3 1.5 7.5 78° 52 79 0.039
KB16AJ 5 16 +0.009
-0.001
26 36 24.9 24.9 1.3 1.5 10 78° 59 91 0.049
KB20AJ 5 20 32 0
-0.011
45 31.5 30.3 1.6 2 10 60° 0.015 88 140 0.088
KB25AJ 6 25 +0.011
-0.001
40 58 0
-0.3
44.1 0
-0.3
37.5 1.85 2 12.5 60° 100 160 0.205
KB30AJ 6 30 47 68 52.1 44.5 1.85 2 12.5 50° 160 280 0.319
KB40AJ 6 40 +0.013
-0.002
62 0
-0.013
80 60.6 59 2.15 3 16.8 50° 0.017 220 400 0.650
KB50AJ 6 50 75 100 77.6 72 2.65 3 21 50° 390 810 1.160
KB60AJ 6 60 90 0
-0.015
125 0
-0.4
101.7 0
-0.4
86.5 3.15 3 27.2 54° 0.020 480 1020 1.910
Remarks:Specifications for POM retainer, steel retainer, stainless steel type, oil-less series are the same

Adjustment Linear Bearing KB-AJ Features

The outer linear bushing surface of KB-AJ adjustment linear bearing has a slotted gap (h), and two outer stop grooves for securing the bearing. The number of ball rows of KB-AJ European series supplied by ISUTAMI varies according to the bearing size, ranging from 4 to 6 columns;
The inner diameter (dr) range is 5-60mm, and the inner diameter tolerance range varies with the inner diameter. It is mainly divided into four intervals: 0~+0.008mm, -0.001~+0.009mm, -0.001~+0.011mm, -0.002~+0.013mm;
The outer diameter (D) range is 12-90mm, and the outer diameter tolerance range varies with the outer diameter, which is mainly divided into five intervals: -0.008~0mm, -0.009~0mm, -0.011~0mm, -0.013~0mm, -0.015~ 0mm;
The length (L) range is 22-125mm, and the length tolerance range varies with length, mainly divided into three intervals of -0.2~0mm, -0.3~0mm, -0.4~0mm;
The maximum radial eccentricity is divided into four grades: 0.012mm, 0.015mm, 0.017mm and 0.02mm according to the size;
The basic dynamic load rating (C) ranges from 21 to 480 kgf (basic rated life is 50 km);
The basic static load (Co) range is 27-1020kgf (basic rated life is 50km);

KB-AJ clearance-adjustable linear bearings are generally mounted to KBA-AJ standard linear bearing pillow blocks, KBB-AJ short linear pillow blocks and KBSB-AJ standard linear bearing pillow blocks with the linear shaft to be a simple linear motion system.

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