Miniature Ball Bearings
are small bearings with balls as their rolling elements. These small bearings have an outside diameter of less than 3/8" (<9.525 mm) or are small bearings with an outside diameter less than or equal to ½" (≤ 12.7 mm) having a ration of outside diameter to inside diameter equal to or less than two.
Miniature bearings are sometimes referred to as instrument bearings or micro bearings and are used in applications as varied as gyros, anemometers, flow meters, miniature gearboxes, small motors and radio controlled models.
Chrome steel bearings, with a steel retainer and a suitable lubricant, can be used at temperatures of 120°C constant or up to 150°C intermittent. Above these temperatures, the load capacity of chrome steel is reduced and the steel undergoes more of a dimensional change than stainless steel.
Chrome steel bearings are not suitable for use in corrosive environments as the steel is not corrosion resistant. Chrome steel miniature bearings are coated with a layer of preservative oil to protect against moisture. We do not recommend using chrome steel bearings without any lubricant (dry) as they are prone to corrosion. This may even occur while in storage or during shipping as a result of condensation forming inside the protective packaging. Protective oil cannot be applied to the outside of a dry bearing as it would find its way inside the bearing making the bearing no longer "dry".
Materials
The
performance and reliability of rolling bearings are greatly affected by the materials which the bearing components are made from.BXY bearing rings and balls are made of high quality of GCr15 vacuum-degassed bearing steel.Chemical composition of GCr15 bearing steel is basically equivalent to some representative bearing steel as the chart shown below.
Chemical composition of high-carbon chrome bearing steel
|
Standard Code
|
Material
|
Analysis(%)
|
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
P
|
S
|
|
GB/T
|
GCr15
|
0.95-1.05
|
0.15-0.35
|
0.25-0.45
|
1.40-1.65
|
<=
0.08
|
<=
0.025
|
<=
0.025
|
|
DIN
|
100Cr6
|
0.95-1.05
|
0.15-0.35
|
0.25-0.45
|
1.40-1.65
|
|
<=
0.030
|
<=
0.025
|
|
ASTM
|
52100
|
0.98-1.10
|
0.15-0.35
|
0.25-0.45
|
1.30-1.60
|
<=
0.10
|
<=
0.025
|
<=
0.025
|
|
JIS
|
SUJ2
|
0.98-1.10
|
0.15-0.35
|
<=
0.50
|
1.30-1.60
|
|
<=
0.025
|
<=
0.025
|
Most of ball bearing cages are made of cold rolled steel sheet.Anf for some bearing types and special applications,cages are made of glass fiber reinforced nylon 66 plastic,phenolic or machined brass.
The material of bearing housings is gray or ductile cas iron, housings can also be made of pressed steel,stainless steel, or engineering plastics for special purposes.
Bearing Construction
· Bearing Ring - Contains inner and outer rings.Made of high quality steel, it can prolong the service life of bearing efficiently
· Rolling Element - Transfer the load between the inner and outer rings
· Retainer - Reduce friction heat, optimize load, and easy to disassemble
· Integral Seal - Greatly extend the service life of the bearing, keep lubricant in the bearing and keep contaminants out
Bearing Parameters
According to the size of deep groove ball bearing can be divided into:
·M
iniature bearing -- outer diameter of less than 26mm;
·S
mall bearings -- outer diameter ranging from 28-55mm;
·S
mall and
M
edium-sized bearings -- outer diameter ranging from 60-115mm;
·M
edium and
L
arge bearings --outer diameter range of 120-190mm
·L
arge bearing -- outer diameter range of 200-430mm;
·E
xtra-large bearing --outer diameter of more than 440mm.
The parameters of Miniature bearings are as follows:
|
Bearing No.
|
I.D
|
O.D
|
W
|
Load Rating(KN)
|
Max speed
|
|
d
|
D
|
B
|
Dynamic
|
Static
|
Oil
|
|
mm
|
inch
|
mm
|
inch
|
mm
|
inch
|
Cr
|
Cor
|
r/min
|
|
603
|
3.000
|
0.118
|
10.000
|
0.394
|
4.000
|
0.157
|
0.5530
|
0.2030
|
49500
|
|
604
|
4.000
|
0.157
|
12.000
|
0.472
|
4.000
|
0.157
|
1.1700
|
0.4360
|
40500
|
|
605
|
5.000
|
0.197
|
14.000
|
0.551
|
5.000
|
0.197
|
1.1970
|
0.4540
|
40500
|
|
606
|
6.000
|
0.236
|
17.000
|
0.669
|
6.000
|
0.236
|
2.0340
|
0.7560
|
37800
|
|
607
|
7.000
|
0.276
|
19.000
|
0.748
|
6.000
|
0.236
|
2.3580
|
0.9540
|
36000
|
|
608
|
8.000
|
0.315
|
22.000
|
0.866
|
7.000
|
0.276
|
2.9700
|
1.2240
|
34200
|
|
609
|
9.000
|
0.354
|
24.000
|
0.945
|
7.000
|
0.276
|
3.0150
|
1.2690
|
32400
|
|
623
|
3.000
|
0.118
|
10.000
|
0.394
|
4.000
|
0.157
|
1.1700
|
0.4360
|
45000
|
|
624
|
4.000
|
0.157
|
13.000
|
0.512
|
5.000
|
0.197
|
1.5660
|
0.6030
|
38700
|
|
625
|
5.000
|
0.197
|
16.000
|
0.630
|
5.000
|
0.197
|
1.5570
|
0.6030
|
38700
|
|
626
|
6.000
|
0.236
|
19.000
|
0.748
|
6.000
|
0.236
|
2.3580
|
0.9540
|
34200
|
|
627
|
7.000
|
0.276
|
22.000
|
0.866
|
7.000
|
0.276
|
2.9700
|
1.2240
|
32400
|
|
628
|
8.000
|
0.315
|
24.000
|
0.945
|
8.000
|
0.315
|
3.0150
|
1.2690
|
30600
|
|
629
|
9.000
|
0.354
|
26.000
|
1.024
|
8.000
|
0.315
|
4.0950
|
1.7730
|
28800
|
|
633
|
3.000
|
0.118
|
7.000
|
0.276
|
2.000
|
0.079
|
0.2830
|
0.1030
|
61200
|
|
634
|
4.000
|
0.157
|
16.000
|
0.630
|
5.000
|
0.197
|
0.5760
|
0.2030
|
59400
|
|
635
|
5.000
|
0.197
|
19.000
|
0.748
|
6.000
|
0.236
|
2.3580
|
0.9540
|
34200
|
|
636
|
6.000
|
0.236
|
22.000
|
0.866
|
7.000
|
0.276
|
2.9700
|
1.2240
|
30600
|
|
637
|
7.000
|
0.276
|
26.000
|
1.024
|
9.000
|
0.354
|
3.6000
|
1.4220
|
27000
|
|
638
|
8.000
|
0.315
|
28.000
|
1.102
|
9.000
|
0.354
|
0.4095
|
1.7730
|
25200
|
|
639
|
9.000
|
0.354
|
30.000
|
1.181
|
10.000
|
0.394
|
0.4590
|
2.1510
|
23400
|
|
684
|
4.000
|
0.157
|
10.000
|
0.394
|
3.000
|
0.118
|
0.5850
|
0.2120
|
49500
|
|
685
|
5.000
|
0.197
|
11.000
|
0.433
|
3.000
|
0.118
|
0.6430
|
0.2550
|
46800
|
|
686
|
6.000
|
0.236
|
13.000
|
0.512
|
3.500
|
0.138
|
0.9720
|
0.3960
|
43200
|
|
687
|
7.000
|
0.276
|
14.000
|
0.551
|
3.500
|
0.138
|
1.0530
|
0.4590
|
40500
|
|
688
|
8.000
|
0.315
|
16.000
|
0.630
|
4.000
|
0.157
|
1.1250
|
0.5310
|
38700
|
|
689
|
9.000
|
0.354
|
17.000
|
0.669
|
4.000
|
0.157
|
1.5570
|
0.7290
|
36900
|
|
694
|
4.000
|
0.157
|
12.000
|
0.472
|
4.000
|
0.157
|
0.8730
|
0.3240
|
42300
|
|
695
|
5.000
|
0.197
|
13.000
|
0.512
|
4.000
|
0.157
|
0.9720
|
0.3870
|
45000
|
|
696
|
6.000
|
0.236
|
15.000
|
0.591
|
5.000
|
0.197
|
1.5660
|
0.6030
|
42300
|
|
697
|
7.000
|
0.276
|
17.000
|
0.669
|
5.000
|
0.197
|
1.4490
|
0.6430
|
37800
|
|
698
|
8.000
|
0.315
|
19.000
|
0.748
|
6.000
|
0.236
|
2.0160
|
0.8140
|
37800
|
|
699
|
9.000
|
0.354
|
20.000
|
0.787
|
6.000
|
0.236
|
1.9080
|
0.8860
|
36000
|
|
R2
|
3.175
|
0.125
|
9.525
|
0.375
|
3.967
|
0.156
|
0.5760
|
0.2023
|
52200
|
|
R3
|
4.762
|
0.187
|
12.700
|
0.500
|
3.967
|
0.156
|
1.1790
|
0.4410
|
43200
|
|
R4
|
6.350
|
0.250
|
15.875
|
0.625
|
4.978
|
0.196
|
1.3320
|
0.5530
|
58700
|
|
R6
|
9.525
|
0.375
|
22.225
|
0.875
|
5.566
|
0.219
|
3.0150
|
1.2690
|
34200
|
Products Packing
Our packaging is also very variable, the purpose is to meet the needs of different customers.The commonly used packages are
as follows:
1.
Industrial pa
c
kage+outer carton+pallets
2.
Sing
le box+outer carton+pallets
3.
Tube package+middle box+outer carton+pallets
4.
According to your requir
e
ments
Application
Workplace
Guanxian Xinyan Pillow Block Bearing Co., Ltd. is based in Shandong (China) since 2011 and is one of the biggest authorized manufactures and exporters of bearing. We′ve been dedicated to provide all types of hiigh quality bearings to OEM, Retailers and traders throughout international market since the moment established.
Pillow block bearings, bearings housing, insert bearings and deep groove ball bearings are all we specialized. We are also developing nonstandard bearings as per the drawings from customers. Our dominant product is bearing unit. With the advantages of compact structure, Seld-aligning, well sealed, easy to equip, and reasonable prices. It s widely applied in machinery of agricultrure, chemical engineering, Mine, Metallurgy, Building, Light industry such as refrigeation, plastic, shoe-making, carpentry, Road, Building material, food, packing, textile, transportation, Printing, ceramics and so on.
Up to now, we have exported our goods to Italy, Brazil, Argentina, Poland, India, Pakistan, Bangladesh, Thailand etc.
First class service, efficient delivery methods, the most competitive quality-price ratio, we dedicated to provide you quality brand bearings. Sincerely welcome new and old customers visit and build cooperation. Our goal is to establish first class company, create world famous brand, The policy in quality is that the need of the maket is our direction, pursuing to meet customers satisfaction, Improving constantly, working practically and creatively and serving the society. We form the sprit of connecting together to improve and to help you to success.
BXY is our registered brand. And warmly welcome to Xin Yan Bearing Co., Ltd and Lets expand BXY market together!
Why choose Us?
NO.1
We are factory directly.
NO.2
We provide our customers the most Comprehensive service and we'll do our best to deal with problems our customers
encountered to ensure our customers SATISFACTION
.
NO.3
The high quality
of our products means that it has long life, high speed, low noise, low vibration and low friction
.
NO.4
Be honesty, be professional is our faith; good attitude, timely response, quick delivery, consideration of every detail is our working style
.
NO.
5
Manufactured by oursel
ves
, enough storage space, enough inventory, high producing efficiency we possess, the most favorable price we offer to our customers makes sure every deal have a happy end
.
The company is from the original steel, forging, turning, quenching, fine grinding, installation, one-stop production line, to ensure the quality of steel, bearing size specifications, installation technology, at a low price to ensure the quality of bearing.We will deliver the goods on a fast delivery date.To ensure your use and sale.Omitted the middle link, let you more affordable...
Customer's evaluation is the standard of product quality inspection, we always adhere to the customer matching the corresponding quality requirements of the product, responsible for the customer.
I
n the premise of quality assurance to customers,
we try
to achieve a '
popular
' price.
Exhibition
FAQ
Q
1
: How many the MOQ of your company?
A: Our company MOQ is 1pcs.
Q
2
: Could you accept OEM and customize?
A:YES, we can customize for you according to sample or drawing.
Q
3
: Could you supply sample for free?
A: Yes, we can supply sample for free, but need our customer afford freight.
Q
4
: Does your factory have CE?
A: Yes, we have ISO 9001:2008, and SASO. If you want other CE, we can do for you.
Q
5
: Is it your company is factory or Trade Company?
A: We have our own factory; our type is factory + trade.
Q
6
: What time the guarantee of your bearing quality guarantee period?
A: 6 months ,Customer need supply photos and send bearing back.
Q
7
: Could you tell me the payment term of your company can accept?
A: T/T, Western Union, PayPal, T/T, L/C
.
Q
8
: Could you tell me the delivery time of your goods?
A: 7-15 days , mostly base on your order quantity
.
WELCOME TO INQUIRY!