Chrome Steel Brass Cage Nnu 4948/W33 Factory Price Double Row Cylindrical Roller Bearing for Machine Parts

• Customization: Available
• Rolling Body: Roller Bearings
• The Number of Rows: Single
• Model NO.: Nnu 4948/W33
• Outer Dimension: Small and Medium-Sized (60-115mm)
• Material: Brass
• Spherical: Aligning Bearings
• Load Direction: Thrust Bearing
• Separated: Separated
• Quality: P0, P6, P2
• Transport Package: Industrial and Single Box
• Specification: standard
• Trademark: JRZC /SUFUL Brand or OEM
• Origin: China
• HS Code: 8483200000
• Production Capacity: 1, 500, 000 Pieces/Year
• Package Size: 36.00cm * 36.00cm * 15.00cm
• Package Gross Weight: 30.000kg

Product Description

Cylindrical Roller Bearings

double row, with cage

• Available in various designs
• High to very high load ratings
• Available with cylindrical or tapered bore
• Double row cylindrical roller bearings with cage can absorb very high radial forces due to the linear contact between rolling element and bearing ring. They are classified into two general designs which differ in flange position on the inner or outer ring. Double row cylindrical roller bearings can be disassembled and are easily installed or uninstalled. They are suitable for medium to high speeds, but they are rigid and cannot compensate angular misalignments.

 

The raceway is super-finished, suitable for high speed 800-1500 rpm.
Thickened electrolytic copper cage, enhanced toughness and bearing capacity, suitable for high-speed motors.
Bainite heat treatment enhances product bearing capacity by 30% and wear resistance by 40%.
Fine grinding inner ring, tolerance -0.2mm, narrowing accuracy range, P5 accuracy.




The ball race type without flanges of both designs facilitates clearance in axial direction of the housing. The compensation of misaignment or linear expansion of the shaft occurs unrestrained in the bearing so a sliding fit in the housing or on the shaft is not necessary.

By default, cylindrical roller bearings by KRW are designed with optimised contact areas between roling elements and raceways. Due to the logarithmic prohling of the cylindrical rollers, damaging edge tension is avoided even with very high loads.



Double row cylindrical roller bearings with cage are dismountable and non-latching bearings that are available in the standard designs NNU and NN.

The outer ring of NNU bearings has three integral flanges while the inner ring is designed without flanges. For NN bearings, the three integral flanges are located on the inner ring and the outer ring has no flanges.

Double row cylindrical roller bearings with cage are suitable for the absorption of very high radial forces and offer especially high rigidity. Cylindrical roller bearings can be delivered with cylindrical or tapered bore.
 

 

Bearing type	Internal Diameter	Outer Diameter	Width	Dynammic Load Rating	Static Load Rating	Limiting Speed		Weight
	d	D	W	Cr	Cor	Grease	Oil	Weight
	(mm)	(mm)	(mm)	(kN)	(kN)	(r/min)	(r/min)	(kg)
NJ2306E	30	72	27	70	75.5	8000	10000	0.538
NJ306E	30	72	19	49.2	48.2	8000	10000	0.377
NU1019	95	145	24	75.5	98.5	3600	4500	1.4
NU1020	100	150	24	78	102	3400	4300	1.5
NU1021	105	160	26	91.5	122	3200	4000	1.9
NU1022	110	170	28	115	155	3000	3800	2.3
NU1032	160	240	38	212	302	1800	2400	6
NU1034	170	260	42	255	365	1700	2200	8.14
NU1036	180	280	46	300	438	1600	2000	10.1
NU1038	190	290	46	335	495	1500	1900	-
NU219E	95	170	32	208	262	3200	4000	2.96
NU220E	100	180	34	235	302	3000	3800	3.58
NU221	105	190	36	185	235	2800	3600	4
NU2219E	95	170	43	275	368	3200	4000	3.97
NU2220E	100	180	46	318	440	3000	3800	4.86
NU2222	110	200	53	312	445	2600	3400	7.5
NU222E	110	200	38	278	360	2600	3400	5.02
NU2230	150	270	73	530	772	1700	2200	17
NU2232	160	290	80	590	898	1600	2000	25
NU230	150	270	45	360	490	1700	2200	11
NU2318	90	190	64	310	395	3000	3800	8.4
NU2319	95	200	67	3700	500	2800	3600	10.4
NU232	160	290	48	405	552	1600	2000	14
NU2320	100	215	73	415	558	2600	3200	13.5
NU2330	150	320	108	930	1340	1500	1900	45
NU2332	160	340	114	972	1430	1400	1800	55.8
NU2334	170	360	120	1110	1650	1300	1700	63
NU2336	180	380	126	1210	1780	1200	1600	71.2
NU234	170	310	52	425	650	1500	1900	17.1
NU236	180	320	52	425	650	1400	1800	18
NU238	190	340	55	512	745	1300	1700	23
NU318E	90	190	43	298	348	3000	3800	5.59
NU319E	95	200	45	315	380	2800	3600	6.52
NU320E	100	215	47	365	425	2600	3200	7.89
NU321	105	225	49	322	392	2200	3000	-
NU330	150	320	65	595	765	1500	1900	26
NU332	160	340	68	628	825	1400	1800	31.6
NU334	170	360	72	715	952	1300	1700	36
NU336	180	380	75	835	1100	1200	1600	42
NU418	90	225	54	352	392	2400	3200	11
NU419	95	240	55	378	428	2200	3000	14
NU420	100	250	58	418	480	2000	2800	16
NU421	105	260	60	508	602	1900	2600	-
NU430	150	380	85	912	1100	1300	1700	53