Our Products

Technical Details

The standard KZ / ZVWZ bearing components like outer and inner rings balls and rollers material is high carbon chromium Gcr 15 Bearing steel which provide uniform high hardness, toughness and abrasion resistance. Chemical compositions are shown in the following table:

MATERIALS

1. Steel for Outer and Inner Rings or Rollers:

Material Symbol Chemical Composition Rockwell Hardness C Scale
High Carbon Gcr 15 C SI Mn P S Cr Mo 62±3HRC
Chromium 0.95 0.15 0.50 005 0.025 1.30 ----
Bearing Steel 1.10 0.35 Max. Max. Max. 1.60 ----

2. Steel for Retainers : 
The Standards Cage material is Low Carbon Cold Rolled Steel. 
CRCA Steel 

C si Mn P S
0.12 O 0.5 0.04 0.05
Max. Max. Max. Max.

BOUNDARY DIMENSIONS

International Standard Organisation (ISO) has set up the international standards for the bearing industry. The standardisation of boundary dimensions and tolerance allows the bearing manufacturer to utilize the most modern production machines and quality control techniques in producing high quality bearing at an economical price level. The KG BEARING generally, follows the metric measures for its manufacturing program.

SURFACE FINISH

KG BEARING has the equipment’s for super finishing of track of the bearing rings as well as outer diameter of the rollers. Each bearing component i.e., inner and outer Rings and rollers are super finished for the maximum achievement of bearing life.

TESTING FACILITIES

At KG BEARING Quality is an integral part of our culture and every effort is made to ensure that customer get value for money. The company is having skilled employees at all levels to bring their expertise in to the manufacturing of quality bearings.

KG BEARING also comprised with the latest equipment’s like surface finish measuring, roundness Measuring and various electronic gauging equipment’s for checking geometrical parameters such as concentricity, parallelism roundness. Tolerance on our bearings confirms to ISI, ISO, DIN and ABEC –I standards.

At KG BEARING it is standard routine to calibrate its all-testing equipment’s on regular basis. We take utmost care to keep our quality standards at its peak and maintain the same level forever.

A detailed process drawing for each operation of manufacturing helps us to maintain close tolerance during production.

CLEARANCE

KZ / ZVWZ bearings are generally manufactured in normal class clearance but upon customers specific request we supply bearings with C2, C3, C4 or C5 clearances.

DEEP GROOVE BALL BEARINGS – SINGLE ROW, WITH SEAL (S)

Boundary Dimensions Basic Load Rating Limiting Speed Mass
Bearing Designation d D B Dynamic Static Oil Grease
C CO Lubrication Lubrication
kgf kgf RPM RPM Kg
607 ZZ 7 19 6 505 205 28000 21000 0.007
608 ZZ 8 22 7 750 315 26000 19000 0.011
609 ZZ 9 24 7 900 355 25000 18000 0.014
626 ZZ 6 19 6 525 199 28000 22000 0.008
627 ZZ 7 22 7 750 315 26000 20000 0.012
628 ZZ 8 24 8 900 355 24000 19000 0.017
629 ZZ 9 26 8 1030 440 22000 17000 0.019
6000 ZZ 10 26 8 290 156 28000 21000 0.018
6001 ZZ 12 28 8 315 176 26000 19000 0.02
6002 ZZ 15 32 9 440 225 24000 18000 0.029
6003 ZZ 17 35 10 475 285 22000 17000 0.039
6004 ZZ 20 42 12 735 455 19000 15000 0.068
6005 ZZ 25 47 12 880 570 17000 13000 0.077
6006 ZZ 30 55 13 1040 695 14000 10000 0.11
6007 ZZ 35 62 14 1250 865 12000 9000 0.15
6200 ZZ 10 30 9 400 228 26000 19000 0.032
6201 ZZ 12 32 10 540 315 24000 18000 0.036
6202 ZZ 15 35 11 610 360 22000 17000 0.04
6203 ZZ 17 40 12 750 455 20000 16000 0.06
6204 ZZ 20 47 14 1000 630 18000 14000 0.10
6205 ZZ 25 52 15 1100 710 16000 12000 0.12
6206 ZZ 30 62 16 1530 1020 13000 9500 0.19
6207 ZZ 35 72 17 2000 1400 11000 8500 0.28
6208 ZZ 40 80 18 2400 1700 10000 8500 0.36
6209 ZZ 45 85 19 2600 1900 9000 7000 0.40
6210 ZZ 50 90 20 2750 2000 9000 6700 0.45
6300 ZZ 10 35 11 630 380 22000 18000 0.051
6301 ZZ 12 37 12 765 475 20000 17000 0.06
6302 ZZ 15 42 13 900 555 20000 16000 0.08
6303 ZZ 17 47 14 1060 670 19000 15000 0.11
6304 ZZ 20 52 15 1250 800 17000 13000 0.14
6305 ZZ 25 62 17 1760 1160 14000 10000 0.22
6306ZZ 30 72 19 2200 1500 12000 9000 0.34
6307 ZZ 35 80 21 2600 1830 10000 8000 0.45
6308 ZZ 40 90 23 3200 2240 9000 7000 0.60
6309 ZZ 45 100 25 4150 3050 8000 6300 0.81
6310 ZZ 50 110 27 4800 3650 7500 6000 1.05

STANDARD BEARING TOLERANCES 
TOLERANCE CLASS ABEC-I
INNER RING Tolerance in um.

D

Ball Bearing Series 6000,Industrial Bearings Manufacturers,Automotive Ball Bearings,Miniature Ball Bearings,Single Row Ball Bearings Exporters Dmp

 Vdp V Dmp Kia Ball Bearing Series 6000,Industrial Bearings Manufacturers,Automotive Ball Bearings,Miniature Ball Bearings,Single Row Ball Bearings Exporters Bs BS
diameter series
mm 7,8,9 0,1 2,3,4
over incl. high low Max. Max. Max. Max. Max.
0.6 2.5 0 -8 10 8 6

6

 10 0 -40 12
2.5 10 0 -8 10 8 6 6 10 0 -120 15
10 18 0 -8 10 8 6 6 10 0 -120 20
18

30

0

-10

 13 10 8

8

 13 0

-120

20
30 50 0 -12 15 12 9 9 15 0 -120 20

OUTER RING Tolerance in um

D Ball Bearing Series 6000,Industrial Bearings Manufacturers,Automotive Ball Bearings,Miniature Ball Bearings,Single Row Ball Bearings Exporters Dmp V Dp 3) Dmp 3) Kea Ball Bearing Series 6000,Industrial Bearings Manufacturers,Automotive Ball Bearings,Miniature Ball Bearings,Single Row Ball Bearings Exporters CS V cs
Open Bearing
mm Diameter series
7,8,9 0,1 2,3,4 0,1,2,3,4

over

Incl.

high

low

Max.

Max.

Max.

high

low

Max.

2.5

6

0

-8

10

8

6

10

6

15

Identical to Bs and Vbs Of inner ring of same bearing.

6

18

0

-8

10

8

6

10

6

15

------

18

30

0

-9

12

9

7

12

8

15

------

30

50

0

-11

14

11

8

16

8

20

------

50

80

0

-13

16

13

10

20

10

25

------

80

120

0

-15

19

19

11

26

11

35

------

1) This diameter is included in the group.
2) No values have been established for diameter series 7,8,9,0 and 1.
3) Applies before mounting and after removal of internal of external snap ring.