N309 NU309 NJ 309 45x100x25mm cylinder roller bearing Engineering Machinery

Cylindrical roller bearing N,NU,NJ (RIU, RU) Series

These bearings carry radial load only and can accommodate both expansion and contraction. The relative axial displacement of one ring to the other occurs with minimum friction while the bearing is rotating. Type RIU and RU bearings may be used in one or two positions for shaft support if other means of axial location are provided. The outer ring has two integral ribs while the inner ring has a cylindrical outer diameter without ribs.

Size range: 80 mm to 2000 mm OD

Design Attributes

• Design has a cylindrical inner ring and two ribs on the outer ring, making type NU bearings well suited for use as floating bearings.

• Separable components simplify mounting and removal.

• Accommodates axial expansion and contraction.

• Provides axial displacement between rings with minimum friction while rotating.

• Supports heavy radial loads.

• Not suitable for applications with thrust loads.

Applications

• Cement and coal pulverizers

• Pumps

• Compressors

• Planetary gears

• Gear boxes

• Centrifuges

• Mining equipment

• Aggregate processing

• Transmissions   

  Item Number	Inner (d) MM	Outer (D) MM	Width (B) MM	Weight (kg)
  NJ210ECP	50	90	20	0.5020
  NJ211ECP	55	100	21	0.6780
  NJ212ECP	60	110	22	0.8420
  NJ213ECP	65	120	23	1.0700
  NJ214ECP	70	125	24	1.1771
  NJ215ECP	75	130	25	1.3000
  NJ216ECP	80	140	26	1.5700
  NJ217ECP	85	150	28	1.9500
  NJ218ECP	90	160	30	2.3240
  NJ219ECP	95	170	32	2.9240
  NJ220ECP	100	180	34	3.5500
  NJ 303 ECP	17	47	14	0.1200
  NJ 304 ECP	20	52	15	0.1500
  NJ 305 ECP	25	62	17	0.2500
  NJ 306 ECP	30	72	19	0.3700
  NJ 307 ECP	35	80	21	0.4900
  NJ 308 ECP	40	90	23	0.6700
  NJ 309 ECP	45	100	25	0.8900
  NJ 310 ECP	50	110	27	1.1700