large stock bearing tapered roller bearing 31312
USD $1 - $2,000 /Set
Min.Order:1 Set
Shanghai Shengyue Bearing Co., Ltd.
Large stock bearing tapered roller bearing 31312
The Brief Description of Bearings:
31312 Tapered roller bearings have tapered inner and outer ring raceways and tapered rollers. They are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads. The projection lines of the raceways meet at a common point on the bearing axis to provide true rolling and low friction. The axial load carrying capacity of tapered roller bearings increases with increasing contact angle (α). The size of the angle is indicated by the calculation factor e († product tables): the larger the value of e, the larger the contact angle. A single row tapered roller bearing is typically adjusted against a second tapered roller bearing.
Single row tapered roller bearings are separable , i.e. the inner ring with roller and cage assembly (cone) can be mounted separately from the outer ring (cup).
Tapered roller bearing 31312 sample pictures:
Structure: | Taper | Type: | Roller | Brand Name: | SYBR or OEM |
Bore Size: | 21.430 - 280 mm | Outside Diameter: | 45.237 - 380 mm | Model Number: |
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Precision Rating: | P0 P5 P6 | Seals Type: | open zz rs | Number of Row: | Single Row |
Place of Origin: | Shandong,China | Material:: | Chrome steel,carbon steeel .stainless steel POM plastic | Hardness::: | HRC60-HRC65 |
Cage::: | Brass,Steel,nylon | HS:: | 84822000 | Quality:: | Original,OEM brand,high quality. |
Rotational Speed:: | 1000-4000 | ServiceRange:: | OEM brand,Specially produce diversified brand for customer Require |
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The factors that influence bearing performance and service life include but are not limited to the following:
1.roller end / flange contact area
The geometry and surface finish of the roller ends and the area on the flange that makes contact with the roller ends, have been optimized to promote and maintain the formation of a lubricant film. This reduces friction and heat generated by the bearing as well as flange wear. The bearings can better maintain preload and run at reduced noise levels.
2.raceways profiles
To increase service life under misalignment or heavy load conditions, tapered roller bearings have either crowned raceways or a logarithmic profile to prevent stress peaks at the roller ends. The logarithmic profile is designed to optimize load distribution along the rollers.
nsistency of profiles and roller size
The rollers used in tapered roller bearings are made to such close tolerances that they are virtually identical. These extremely close tolerances, together with the precision of the raceway profiles, provide optimal load distribution over the rollers, to reduce noise and vibration levels and enable preload to be set more accurately.
4.running-in
Tapered roller bearings typically have a running- in period. During the running-in period, a conventional design tapered roller bearing experiences a significant amount of friction, resulting in wear, which can be noticed as a temperature spike .
Pictures Shows Tapered Roller Bearing:
Parts Model
Bearing Number | Boundary Dimensions(mm) | R | R1 | Cr | Cor | a | Mass | |||||
d | D | T | B | C | (KN) | (KN) | (mm) | (Kg) | ||||
31306 | 27306E | 30 | 72 | 20.75 | 19 | 14 | 1.5 | 1.5 | 52.5 | 60.4 | 23.1 | 0.392 |
31307 | 27307E | 35 | 80 | 22.75 | 21 | 15 | 2 | 1.5 | 65.7 | 76.8 | 25.8 | 0.514 |
31308 | 27308E | 40 | 90 | 25.25 | 23 | 17 | 2 | 1.5 | 81.4 | 96.4 | 29 | 0.727 |
31309 | 27309E | 45 | 100 | 27.25 | 25 | 18 | 2 | 1.5 | 95.6 | 113.8 | 31.7 | 0.944 |
31310 | 27310E | 50 | 110 | 29.25 | 27 | 19 | 2.5 | 2 | 108 | 128.5 | 34.8 | 1.21 |
31311 | 27311E | 55 | 120 | 31.5 | 29 | 21 | 2.5 | 2 | 129.9 | 158 | 37.5 | 1.56 |
31312 | 27312E | 60 | 130 | 33.5 | 31 | 22 | 3 | 2.5 | 145.4 | 176.8 | 40.4 | 1.9 |
31313 | 27313E | 65 | 140 | 36 | 33 | 23 | 3 | 2.5 | 165.7 | 202.6 | 44.2 | 2.37 |
31314 | 27314E | 70 | 150 | 38 | 35 | 25 | 3 | 2.5 | 186.9 | 231 | 46.8 | 2.86 |
31315 | 27315E | 75 | 160 | 40 | 37 | 26 | 3 | 2.5 | 208.5 | 258.9 | 49.7 | 3.38 |
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.
Bearings Package of Taper Roller Bearing :
Original Package:
1):Inner Plastic Bag+ Paper Box + Carton(+Pallet);
2):Small sizes:Plastic Tube + Carton
3):Big sizes:Wooden Case
Bearings Lead time of Taper Roller Bearing :
We will prepare your order as soon as possible.
1)2-3 days for ex-stock
2)6-10 days for others
Shipping & Delivery time:
1)Less than 45 Kg:DHL TNT Fedex UPS express will be better,( 4-7 days delivered to your address);
2) Between 45 to 200 Kg:Air transiportation will be better,( 5-14 days delivered to your airport);
3) Over 200 Kg:Sea transportation will be better.( Cheapest,18-45 days to your port ).
Payment terms of Taper Roller Bearing:
We accept T/T, Western Union,Paypal,Visa.
1) T/T or WU (we undertake the bank fees):
A:100% payment.
B:30% deposit ,70% before transportation.
2)PayPal (we undertake the transaction fees) :
A:100% payment.
B:30% deposit ,70% before transportation
3) L/C at sight.
Note :We will take some pictures of your KOYO bearings before transportation.
Price terms | FOB,CNF,CFR,CIF,Door to door |
Shipping Airport | Shanghai Pudong International Airport |
Shipping Port | Shanghai,Guangzhou |
Shanghai Shengyue Bearing Co., Ltd. is a professional bearing manufacturer and dealer in China. We have been engaged in bearing industry for 15 years and worked on bearing import and export for more than 8 years. We attend international bearing fairs, put in many B2B websites and achieve many customers all over the world, building up a good reputation from our customers.
Our company Information:
Company name | Shanghai Shengyue Bearing Co.,Ltd |
Business type | Bearings Supplier & Bearing manufacturer |
Location | Shanghai City,China |
Experience | 7 years |
Supply | Famous brands & Chinese brands bearings |
OEM service | Providing |
Our advantages |
1.Most Competitive Price. 2.Help you to choose the best freight. 3.Provide all document for your Customs Clearance. 4.We will undertake the responsibility if there is any problems.
Trustworthiness is the basis of great bussiness.And we have the powerful ability to support your business! |
Our Factory Pictures: