Classification of cylindrical roller bearings:
1.Single row cylindrical roller bearing: Single row cylindrical roller bearing is a separable bearing that is easy to install and disassemble. Both rings can adopt a tight fit, and the modified contact line between the roller and raceway can reduce stress concentration.
2.Double row cylindrical roller bearings: Double row cylindrical roller bearings belong to the category of floating bearings, and their separability makes installation and disassembly very convenient. Both ferrules can be used with a tight fit. Double row cylindrical roller bearings are almost not allowed to have inclination angles.
Characteristics of cylindrical rollers
1. The roller and raceway are in line contact or repaired line contact, with a large radial bearing capacity, suitable for bearing heavy loads and impact loads.
2. The friction coefficient is small, suitable for high speed, and the limiting speed is close to Deep Groove Ball Bearing.
3. The N-type and NU type can move axially and adapt to changes in the relative position of the shaft and casing caused by thermal expansion or installation errors. They can be used as free end supports.
4. The machining requirements for the shaft or seat hole are high, and the relative deviation of the outer ring axis after bearing installation should be strictly controlled to avoid contact stress concentration.
5. The inner or outer ring can be separated for easy installation and disassembly.
Cylindrical roller bearing | ||||||
Bearing No. | Boundary Dimensions(mm) | Basic Load Ratings(N) | Limiting Speed | |||
d | D | B | Cr | Cor | Oil(RPM) | |
N203 | 17 | 40 | 12 | 11400 | 9100 | 19000 |
NJ203 | 17 | 40 | 12 | 11400 | 9100 | 19000 |
NJ203ETN | 17 | 40 | 12 | 16900 | 13800 | 19000 |
NU203 | 17 | 40 | 12 | 11400 | 9100 | 19000 |
NU203ETN | 17 | 40 | 12 | 16900 | 13800 | 19000 |
NJ2203E | 17 | 40 | 16 | 22800 | 20300 | 16400 |
N204 | 20 | 47 | 14 | 15800 | 13100 | 16400 |
NF204 | 20 | 47 | 14 | 15800 | 13100 | 16400 |
NJ204 | 20 | 47 | 14 | 17000 | 14400 | 16400 |
NU204 | 20 | 47 | 14 | 15800 | 13100 | 16400 |
N304 | 20 | 52 | 15 | 21800 | 17700 | 13800 |
NJ304 | 20 | 52 | 15 | 21800 | 17700 | 13800 |
NU304 | 20 | 52 | 15 | 21800 | 17700 | 13800 |
NUP304ETN | 20 | 52 | 15 | 31500 | 26800 | 13100 |
NJ2304ETN | 20 | 52 | 21 | 42000 | 38700 | 13000 |
N205 | 25 | 52 | 15 | 17000 | 14900 | 13800 |
NF205 | 25 | 52 | 15 | 17000 | 14900 | 13800 |
NJ205 | 25 | 52 | 15 | 17000 | 14900 | 13800 |
NJ205E | 25 | 52 | 15 | 29900 | 28400 | 13100 |
NJ205ETN | 25 | 52 | 15 | 29900 | 28400 | 13100 |
NU205 | 25 | 52 | 15 | 17000 | 14900 | 13800 |
NU205/C3 | 25 | 52 | 15 | 15400 | 14900 | 13800 |
NU205E | 25 | 52 | 15 | 29900 | 28400 | 13100 |
NU205ETN | 25 | 52 | 15 | 29900 | 28400 | 13100 |
NUP205 | 25 | 52 | 15 | 17000 | 14900 | 13800 |
NCL205 | 25 | 52 | 15 | 24600 | 24300 | 13100 |
N2205 | 25 | 52 | 18 | 24100 | 23300 | 13100 |
NJ2205 | 25 | 52 | 18 | 24100 | 23300 | 13100 |
NU2205 | 25 | 52 | 18 | 24100 | 23300 | 13100 |
NU2205/C3 | 25 | 52 | 18 | 21400 | 22800 | 13100 |
NU2205EV | 25 | 52 | 18 | 41400 | 43300 | 11400 |
N305 | 25 | 62 | 17 | 29100 | 25200 | 11400 |
N305ENTN/C3 | 25 | 62 | 17 | 41500 | 37400 | 11400 |
NF305 | 25 | 62 | 17 | 29100 | 25200 | 11400 |
NJ305 | 25 | 62 | 17 | 29100 | 25200 | 11400 |
1.Is the company a production factory or a trading company?
Depending on the size of the bearing, the MOQ is variable, if you are interested, you can contact me for a quote.
3.Does the company accept OEM or customized bearings?
In addition to standard products, we also supply non-standard and modified standard products for special application. Meanwhile, we provide OEM service.
4.What are the company's delivery terms?
We can accept EXW,FOB,CFR,CIF,etc. You can choose the one which is the most convenient cost effective for you.
5.What is your
delivery time?
Most orders will be shipped within 7-15 days of payment being received.
Any problems, pls feel free to contact us.
100% after-sales service!
We can supply high-quality bearing products with competitive price and the shortest delivery time if you choose us!