The above is for reference only, and the actual parameters are subject to material.
Double row tapered roller bearing
Characteristic:
Tapered roller bearings consist of four basic components including the inner ring , the outer ring, tapered rollers, and a cage (roller retainer). Tapered roller bearings are designed such that their conical rollers and raceways are arranged so that all elements of the roller and raceway cones meet at a common apex on the bearing axis. The rollers are guided by the contact between the large end of the roller and the rib on the inner ring.
Tapered roller bearings consisting of inner ring with roller and cage assembly can be mounted separately from the cup. The projection lines of all the tapered surfaces meet at a common point on the main axis of the bearing. The rollers are guided by the cone (inner ring) back-face rib. The design of tapered roller bearing can support a combined radial and axial load. The larger the half angles of these cones, the larger the axial force that the bearing can sustain.
Tapered roller bearings mainly burden the joint load from radial and shaft side. This kind of bearings has strong load capability. It belongs to separated bearing; its inner components and outer components can be equipped individually .
Industrial packing/single box packing/carton or pallets packing
Service
OEM & Aftersales
Market
North America, Europe, Southeast Asia, Middle East
Feature
Nice out looks, good quality, best price, short delivery time, easy to install to machines.
Usage
Mainly used in metallurgy, mining, petroleum, chemical industry, construction machinery and other areas
Sample
Available
Delivery
By Express, By Air Cargo or By Ocean Shipping
Bearing
d(mm)
D(mm)
B(mm)
30302 J2
15
42
14,25
30303 J2
17
47
15,25
30304 J2/Q
20
52
16,25
30305 J2
25
62
18,25
30306 J2/Q
30
72
20,75
30307 J2/Q
35
80
22,75
30307 RJ2/Q
35
80
22,75
30308 J2/Q
40
90
25,25
30309 J2/Q
45
100
27,25
30310 J2/Q
50
110
29,25
30311 J2/Q
55
120
31,5
30312 J2/Q
60
130
33,5
30313 J2/Q
65
140
36
30313 RJ2
65
140
36
30314 J2/Q
70
150
38
30315 J2/Q
75
160
40
30316 J2
80
170
42,5
30317 J2
85
180
44,5
30318 J2
90
190
46,5
30320 J2
100
215
51,5
30322 J2
110
240
54,5
30324 J2
120
260
59,5
30326 J2
130
280
63,75
30332 J2
160
340
75
30352 J2
260
540
113
Product Show
Quality Control Process
Rolled Steel
Forging Technology
Heat Treatment
Turner
Grinder
Assembly
Test
Cleaning
Small Package
Outer Package
Tray
Shipping
TBB Bearing Provision is a professional bearing import and export company with over 10 years of experience in this field.
Our brand is TBB which stands for To Be the Best. It is and will always be our company philosophy, whether regarding bearing quality, on time delivery, or sales supporting service; we will always try every effort to be the best among your bearing suppliers.
TBB Target
To provide customer satisfactory product and service,
To provide TBB Bearing to worldwide OEM market and aftermarket.
Constantly optimizing TBB customer service system.
TBB Supplier Management
Based on our rich experience in Chinese bearing, we established TBB supplier management system, and have around 3000 bearing manufacturers data; among which over 60 manufacturers we have cooperated for a long time; our professional engineer team will audit every cooperated supplier in the very start and also evaluate yearly.
TBB Customer Service
TBB’s cooperated more than 5 years’ customers reached 80%.
TBB provide various kinds of bearings, with a size range from 3mm to 4000mm.
TBB complaint rate remains less than 2%, which will always be handled within 7 days.
TBB value the accuracy of delivery time, with a rate of 98%.
Since 2009 year, we have built up long term cooperation with professional authoritative bearing test centers working with the advanced inspection facilities and scientific guidance, to ensure every customer receive well performance goods.
TBB Reinvestment, we use 10% yearly profit as TBB reinvestment
We set up multiple sales platforms to assure stable and long term development.
We set up advanced management system to assure stable product chain, and keep competition advantage.
Our warehouse is located in Shanghai, and is operated under a complete logistic system, which ensures our reliable and efficient product delivery.
Company culture
We pay attention to every partner, about their growth and development;
We pay attention to every staff, about their growth and development.
TBB Product Ranges
Standard Bearings including
Deep groove ball bearings
Tapered roller bearings
Cylindrical roller bearings
Spherical roller bearings
Spherical plain bearings
Pillow blocks
Adapter sleeves
Special field bearings including
EMQ bearings
Slewing bearings
Railway bearings
Machine Tool Spindle Bearings
Wind power bearings
TBB Case Study
Product: Big size Tapered roller bearing
Application: Bonfiglioli Wind Turbines Gearbox
Customer Background: Original bearing supplier was America Timken, standard design with special raw material produced by Timken
TBB Material solution: Raw material supplier--XINGCHENG STEEL, top bearing steel manufacturer in China Raw material is produced by XINGCHENG STEEL based on TBB request, with strict control of Ti, H, O elements.
TBB Design: (1) Bearing rings and rollers are with convexity design, have control of convexity value. Greatly increase bearing life.
(2) Use Romax Designer, simulate actual application conditions, calculate bearing life and load capacity, improve product performance.
Sample Test: 18 months,2 times samples submition,2 times bench test, test is finished after certain time, TBB samples were in good condition, samples are homologated.
Final Result: From January 2016 TBB started bearing supply to Bonfiglioli, yearly order amount about USD 1,200,000
Hope we will have the opportunity to be on your service!
