bearing, description about cylindrical roller bearing NJ316 ECM brass cage bearing on China Suppliers Mobile

cylindrical roller bearing NJ316 ECM brass cage bearing

cylindrical roller bearings are available in many designs, series and sizes. The major design differences between the bearings presented in this section are in:

the number of roller rows (one, two or four)
the type of cage (with, without or special designs)
- Bearings with a cage can accommodate heavy radial loads, rapid accelerations and high speeds.
- Full complement bearings (without a cage) incorporate a maximum number of rollers and are therefore suitable for very heavy radial loads at moderate speeds.
- high-capacity cylindrical roller bearings combine the high load carrying capacity of a full complement bearing with the high speed capability of a bearing with cage.
the configuration of the inner and outer ring flanges (position and number of guide flanges)

The specification of NJ316ECM bearing:

Bearing Type	NJ
Bore Dia (d)	80.000	mm
Outer Dia (D)	170.000	mm
Width (B)	39.000	mm
Radius (min) (rs)	2.10	mm
Dynamic Load Rating (Cr)	253,000	N
Static Load Rating (Cor)	277,000	N
Max Speed (Grease)	3,600	rpm
Max Speed (Oil)	4,300	rpm
Max. Shaft Shoulder Dia. Inner (Li)	101	mm
Min. Housing Shoulder Dia., Outer (Lo)	151	mm
Weight (g)	4,530.00	grams

cylindrical roller bearing applications

As you have anticipated the effectiveness and efficiency of these Bearings, you probably have guessed that Cylindrical Roller Bearings are essential part of any machinery that comes with rotating parts. These are widely used in papermaking industry, electric motors, railways, motorcycles, pumps, wind turbines and gearboxes. Although these Bearings are used in above mentioned industries but their use is not limited there because of their high performance and durability even under stressful conditions.

Material and Structure

These Bearings are made with several different kind of material based on their applications and use, although alloy steel is a widely used material in these because of it offers maximum durability to rollers, rings and even the roller cage. In order or achieve more performance with high acceleration and speed as well as more carrying capacity while sacrificing durability, these Bearings are made with pressed steel too. In some cases, polyamide cages are used.

Variations and Models

Mainly there are three variations of these Bearings; single row Cylindrical Roller Bearings, double row Cylindrical Roller Bearings and multi row Cylindrical Roller Bearings. The names of these models are self explanatory.

Single row Bearings

These come with a single set of inner and outer ring as well as a single set of cage and rollers. There are several subtypes of single row Bearings and the difference between them is placement of cage and rollers.

Double row Bearings

These are similar to single row Bearings except they come with two set of inner and outer rings as well as two sets of rollers and cage. This model is used in precision machines because of their augmented strength,

cylindrical roller bearing catalogue:

Bearing No.	Boundary dimensions(mm)	Basic load ratings(kN)	Limiting speed(rpm )	Mass
d	D	B	rs min	rs1 min	Dynamic(Cr)	Static(Cor)	Grease	Oil	Kg
NJ304E	20	52	15	1.1	0.6	31.5	26.9	13000	15000	0.176
NJ305E	25	62	17	1.1	1.1	41.5	37.5	11000	13000	0.275
NJ306E	30	72	19	1.1	1.1	53	50	9300	11000	0.398
NJ307E	35	80	21	1.5	1.1	71	71	8100	9600	0.545
NJ308	40	90	23	1.5	1.5	58.5	57	8000	9400	0.658
NJ308E	40	90	23	1.5	1.5	83	81.5	7200	8500	0.754
NJ309	45	100	25	1.5	1.5	74	71	7200	8400	0.877
NJ309E	45	100	25	1.5	1.5	97.5	98.5	6500	7600	0.996
NJ310	50	110	27	2	2	87	86	6500	7700	1.14
NJ310E	50	110	27	2	2	110	113	5900	6900	1.3
NJ311	55	120	29	2	2	111	111	5900	7000	1.45
NJ311E	55	120	29	2	2	137	143	5300	6300	1.65
NJ312	60	130	31	2.1	2.1	124	126	5500	6500	1.8
NJ312E	60	130	31	2.1	2.1	150	157	4900	5800	2.05
NJ313	65	140	33	2.1	2.1	135	139	5100	6000	2.23
NJ313E	65	140	33	2.1	2.1	181	191	4600	5400	2.54
NJ314	70	150	35	2.1	2.1	158	168	4700	5500	2.71
NJ314E	70	150	35	2.1	2.1	205	222	4200	5000	3.1
NJ315	75	160	37	2.1	2.1	190	205	4400	5200	3.28

cylindrical roller bearings:

cylindrical roller bearing NJ316 ECM brass cage bearing

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