Quick Details
Structure: Taper
Type: Roller
Brand Name: LBLS
Bore Size: 82.5mm
Outside Diameter: 161.92mm
Width: 47.625mm
Model Number: 757 / 752
Number of Row: Single Row
Place of Origin: Jiangsu China (Mainland)
Packaging & Delivery
Packaging Detail: Each bearing in single poly bag+ box + carton + pallet or according to your demands
Delivery Detail: 5-20 working days.
Payment: A: 30% deposit By T/T, Western Union, Paypal, 70% before delivery.
B: 100% L/C at sight
C:small order by express
757 / 752 Tapered Roller Bearing
Specifications :
| Model Number |
30310 |
| Structure |
Taper |
| Type |
Roller |
| Bore Size |
82.55(mm) |
| Outside Diameter |
161.925(mm) |
| Width |
47.625(mm) |
| Material |
Bearing steel (gcr15) |
| Cage material |
Nylon , steel , brass |
| Clearance |
C0 , C2 , C3 , C4 , C5 |
| Seals Type |
Open |
| Precision Rating |
P0, P6, P5, P4 |
| Grease |
As you requirement |
| Noise Level |
Z1, Z2, Z3, Z4 |
| Number of Row |
Single Row |
| Application |
Utomotive, mill machinery, mining, metallurgy, plastics and machinery. |
| Feature |
Low noise , long life , high precision |
| Certifications |
ISO9001: 2000 |
| Brand Name |
LBLS |
| Service |
LBLS servise and design service |
| Delivery Detail |
Within 5-7 days after your payment |
| Package |
Standard packaging or as customer's request |
| Sample |
Free provide |
| Payment A |
30% T/T deposit,the balance be paid before shipping |
| Payment B |
100% L/C at sight |
| Payment C |
Small order by express |
Product detail description :
Tapered roller bearings are bearings that can take large axial forces (i.e., they are good thrust bearings) as well as being able to sustain large radial forces.
The inner and outer ring raceways are segments of cones and the rollers are also made with a taper so that the conical surfaces of the raceways and the roller axes if projected, would all meet at a common point on the main axis of the bearing.
This conical geometry is used as it gives a larger contact patch, which permits greater loads to be carried than with spherical (ball) bearings, while the geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of the contact patch and no differential scrubbing occurs. When a roller slides rather than rolls, it can generate wear at the roller-to-race interface, i.e. the differences in surface speeds creates a scrubbing action. Wear will degenerate the close tolerances normally held in the bearing and can lead to other problems. Much closer to pure rolling can be achieved in a tapered roller bearing and this avoids rapid wear.
The rollers are guided by a flange on the inner ring. This stops the rollers from sliding out at high speed due to their momentum.
The larger the half angles of these cones the larger the axial force that the bearing can sustain.
Tapered roller bearings are separable and have the following components: outer ring, inner ring, and roller assembly (containing the rollers and a cage). The non-separable inner ring and roller assembly is called the cone, and the outer ring is called the cup. Internal clearance is established during mounting by the axial position of the cone relative to the cup.
Metric tapered roller bearings follow the designation system defined by ISO 355.
Applications
In many applications tapered roller bearings are used in back-to-back pairs so that axial forces can be supported equally in either direction.
Pairs of tapered roller bearings are used in car and vehicle wheel bearings where they must cope simultaneously with large vertical (radial) and horizontal (axial) forces. Applications for tapered roller bearings are commonly used for moderate speed, heavy duty applications where durability is required. Common real world applications are in agriculture, construction and mining equipment, axle systems, gear box, engine motors and reducers.
| Bearing |
Dimension(mm) |
Weight |
| Number |
d |
D |
B |
kg |
| 645/632 |
21.488 |
136.525 |
41.275 |
|
| 749/742 |
85.072 |
150.089 |
44.45 |
3.168 |
| 780/772 |
101.06 |
180.975 |
47.625 |
4.86 |
| 782/772 |
104.775 |
180.975 |
47.625 |
4.67 |
| 787/772 |
104.775 |
180.975 |
47.625 |
4.64 |
| 1280/20 |
22.235 |
57.15 |
22.225 |
0.286 |
| 1755/29 |
22.22 |
56.89 |
19.36 |
0.258 |
| 1988/22 |
28.575 |
57.15 |
19.845 |
0.214 |
| 2559/23 |
30.162 |
73.711 |
23.812 |
0.483 |
| 2587/23 |
33.338 |
69.85 |
23.812 |
0.435 |
Company's Profile
Over the past 10 years, Wuxi BLS Bearing Technology Co. Ltd. has grown to be the leading and fastest growing bearings brand in China and currently produces over xx million bearings in more than an xx sizes every year. It has the capacity to develop bearings from xx mm bore to xx mm outer diameter.
The product range includes ball bearings, tapered roller bearings, and double row angular contact (DRAC) bearings, cylindrical and spherical roller bearings, pillow bearings, plastic bearings, slewing bearings, auto bearing and non-standard bearings. The company is now also acting as sales agent for world known brands like SKF, NTN, NACHI, TIMKEN, NSK, and more.
BLS Bearings are widely used by 2 and 3 Wheelers, Cars, Trucks, Tractors, Electric Motors, Railway wagons, coaches & locomotives, Steel Mills, Heavy Engineering Plants, Bulldozers, Shovels, Tillers and Thermal Power Plants. The automotive and railway industries form the two largest client segments.
NBC has emerged as a leading exporter of bearings from China. Leading customers from all over the world have entrusted BLS with their critical product requirements.
A sense of loyalty and pride permeates the dynamic workforce - comprising equally of employees who have been with the company for decades, and young professionals eager to work in a vibrant work environment and a growth-oriented company.
The company's financial growth is robust and it has set an ambitious growth path for itself with a sharp focus on exports, entry in new product segments and cultivation of people best practices. BLS is poised for a leap into the future with a commitment to act as a conscientious corporate citizen.
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