NUP 205 ECP Cylindrical roller bearings single row high and super-precision

 Cylindrical roller bearings, single row, high- and super-precision

The rollers in a single row cylindrical roller bearing are always guided between the integral "open" flanges on one of the rings. These"open" flanges combined with the specially designed and surface treated rollerends, provide improved lubrication, reduced friction and consequently loweroperating temperature.

The ring with the integral flanges together with thecylindrical roller and cage assembly can be separated from the other ring. Thisresults in easy mounting and dismounting, particularly where the load conditionsare such that interference fits are required for both rings.

Single row cylindrical roller bearings can accommodate heavy radial loads andhigh speeds. They are manufactured in several different designs, the maindifference being in the configuration of the flanges. The most popular are the NU, N, NJ and NUP designs.

NU design  ( Cylindrical roller bearings, single row )
The outer ring of bearings of the NUdesign (fig) has two integral flanges andthe inner ring is without flanges. Axial displacement of the shaft with respectto the housing can be accommodated in both directions within the bearing itself.The bearings are therefore used as non-locating bearings. For manufacturing and maintenance reasons, the two outer ring flanges of large-size bearings of the NUdesign which are identified by a Drawing No. may not be integral but take theform of loose flange rings.

	Cylindrical roller bearings, single row
									Tolerances, see also
									Radial internal clearance, cylindricalbore , taperedbore, unsealed , see also
									Recommendedfits
									Shaftand housing tolerances
	Principal dimensions			Basic load ratings		Fatigue	Speed ratings		Mass	Designation	Angle ring
				dynamic	static	load	Reference	Limiting			Designation
						limit	speed	speed
	d	D	B	C	C0	Pu				bearing
	mm			kN		kN	r/min		kg	-	-
	20	47	18	29,7	27,5	3,45	16000	19000	0,14	NJ 2204 ECP	-
	20	47	18	29,7	27,5	3,45	16000	19000	0,14	NU 2204 ECP	-
	20	52	15	35,5	26	3,25	15000	18000	0,15	N 304 ECP *	-
	20	52	15	35,5	26	3,25	15000	18000	0,17	NJ 304 ECP *	HJ 304 EC
	20	52	15	35,5	26	3,25	15000	18000	0,17	NU 304 ECP *	HJ 304 EC
	20	52	15	35,5	26	3,25	15000	18000	0,16	NUP 304 ECP *	-
	20	52	21	47,5	38	4,8	15000	18000	0,22	NJ 2304 ECP *	-
	20	52	21	47,5	38	4,8	15000	18000	0,21	NU 2304 ECP *	-
	20	52	21	47,5	38	4,8	15000	18000	0,22	NUP 2304 ECP *	-
	25	47	12	14,2	13,2	1,4	18000	18000	0,084	NU 1005	-
	25	52	15	28,6	27	3,35	14000	16000	0,13	N 205 ECP	-
	25	52	15	28,6	27	3,35	14000	16000	0,15	NJ 205 ECJ	HJ 205 EC
	25	52	15	28,6	27	3,35	14000	26000	0,15	NJ 205 ECML	HJ 205 EC
	25	52	15	28,6	27	3,35	14000	16000	0,15	NJ 205 ECP	HJ 205 EC
	25	52	15	28,6	27	3,35	14000	16000	0,14	NU 205 ECJ	HJ 205 EC
	25	52	15	28,6	27	3,35	14000	26000	0,14	NU 205 ECML	HJ 205 EC
	25	52	15	28,6	27	3,35	14000	16000	0,14	NU 205 ECP	HJ 205 EC
	25	52	15	28,6	27	3,35	14000	22000	0,14	NU 205 ECPHA	HJ 205 EC
	25	52	15	28,6	27	3,35	14000	16000	0,14	NUP 205 ECML	-
	25	52	15	28,6	27	3,35	14000	16000	0,14	NUP 205 ECP	-
	25	52	18	34,1	34	4,25	14000	16000	0,18	NJ 2205 ECP	HJ 2205 EC
	25	52	18	34,1	34	4,25	14000	26000	0,17	NU 2205 ECML	HJ 2205 EC
	25	52	18	34,1	34	4,25	14000	16000	0,17	NU 2205 ECP	HJ 2205 EC
	25	52	18	34,1	34	4,25	14000	16000	0,17	NUP 2205 ECP	-
	25	62	17	46,5	36,5	4,55	12000	15000	0,24	N 305 ECP *