Shandong Yichen International Trade Co., Ltd.

High speed Deep groove ball bearing 607
2022年1月11日
oil seal
oil seal
2021年10月29日

Tapered Roller Bearings 30203

PRODUCT NAME: Tapered Roller Bearings
PRODUCT APPLICATION FIRLD: Tapered roller bearings arewidely used in automobile, rolling mill, mining. metullurgy, plastir machiners and other industries.

TypeTapered Roller Bearingsweight (kg)0.079
Model30203Materialchrome steel
d (mm)17BrandBDL
D(mm)40Precision Ratingp5、p6、p0
T(mm)13.25Row numbersingle-row
Brief Introduction:
Tapered roller bearing refers to radial thrust type rolling bearing with tapered roller rolling body. There are two kinds of small cone Angle and large cone Angle. Small cone Angle mainly bear radial load mainly radial and axial combined load, often in double use, reverse installation, inner and outer seat ring can be installed separately, radial and axial clearance can be adjusted during installation and use; The large cone Angle is mainly used to bear the combined axial and radial loads mainly based on axial loads. It is generally not used to bear pure axial loads alone, but can be used to bear pure radial loads when it is configured (the same end is installed relatively).
Definition:
The capacity of single-row tapered roller bearings to withstand axial load depends on the contact Angle, that is, the outer raceway Angle, the greater the Angle, the greater the axial load capacity. Single row tapered roller bearings are the most widely used tapered roller bearings. Small size double row tapered roller bearings are used in front wheel hub of car. Four row tapered roller bearings are used in heavy machines such as large cold rolling mill and hot rolling mill.
Structure features:
Tapered roller bearing type code 30000, tapered roller bearing for separation bearing. In general, especially in GB/T307.1-94 "Rolling Bearing Centripetal Bearing Tolerance" involved in the size range of tapered roller bearing outer ring and internal components is 100 percent can be used interchangeably. The Angle of the outer ring and the diameter of the outer raceway have been standardized with the external dimensions. Changes are not allowed during design and manufacture. In order to cause the tapered roller bearing outer ring and internal components can be exchanged in the world. Tapered roller bearings are mainly used for bearing combined radial and axial loads mainly in radial loads. Compared with angular contact ball bearings, the bearing capacity is large and the limit speed is low. Tapered roller bearings can withstand axial loads in one direction and can limit axial displacement in one direction of the shaft or housing.
Classification:
a single row tapered roller bearing has an outer ring, an inner ring and a set of tapered rollers enclosed by a basket cage. The outer ring can be separated from the inner ring components. In accordance with the ISO dimensions standard for tapered roller bearings, any standard type of tapered roller bearing outer ring or inner ring components should be able to achieve international exchange with the same type of outer ring or inner ring components. That is, the outer ring of the same type in addition to the external size, tolerance should comply with ISO492 (GB307) provisions, the cone Angle of the inner ring component, component cone diameter must also comply with the relevant provisions of the exchange. Generally, the conical Angle of the outer ring raceway of single-row tapered roller bearings is between 10° and 19°, which can bear the joint action of axial load and radial load at the same time. The larger the cone Angle, the larger the axial load capacity. Bearing with large taper Angle, post code plus B, cone Angle between 25°~29°, it can withstand large axial load. In addition, single row tapered roller bearings can adjust the size of the clearance during installation. The outer ring (or inner ring) of double row tapered roller bearings is a whole. Two inner ring (or outer ring) small end face close, there is a ring in the middle, the clearance is adjusted by the thickness of the ring, the thickness of the ring can also be used to adjust the pre-interference of double row tapered roller bearings. Four row tapered roller bearings, this kind of bearing performance and double row tapered roller bearings are basically the same, but than double row tapered roller bearings bear more radial load, limit speed is slightly lower, mainly used in heavy machinery. Multi-sealed double and four-row tapered roller bearings, ZWZ offers long life, multi-sealed double and four-row tapered roller bearings. Personalized new bearing design, change the traditional design method of fully sealed bearing, adopt a new sealing structure combining sealing and dustproof, improve the sealing effect, improve the sealing performance. Compared with open structure bearings, the service life of double-row and four-row tapered roller bearings with multiple seals is increased by 20% ~ 40%. Lubricant consumption reduced by 80%.
11.How do I start purchase?
You can email or contact with our online salesman, then get offer and shipping cost for our order. After your confirm, our salesman will send u lnvoice.After payment done, we will ship goods on time.
22. Do you have stock for all item?
Yes, we have sufficient stock and do fast delivery.
33. What about the delivery?
By express(DHL, UPS, FEDEX, TNT, EMS) to your door; By sea to your nearest port; By air to your nearest airport.
44. What  about the payment?
By TT, Western Union, Moneygram or paypal.
55. What about the lead time?
For stock goods, 1-3 days after payment.
66. Warranty
All our products are brand new. We provide one year warranty.
77. Could you accept OEM and customize? 
YES, OEM is accepted and we can customize for you according to sample or drawing.