NNC-V NNF-V Double Row Cylindrical Roller Bearings

Product Description

MBY® cylindrical roller bearings have many designs, dimension series and sizes. The majority is single row bearings with a cage. Single and double row full complement bearings (without cage) complete the MBY® standard assortment for general engineering. Bearings with a cage can accommodate heavy radial loads and operate at high speeds. Full complement cylindrical roller bearings are suitable for very heavy radial loads at moderate speeds.

The rollers of MBY® cylindrical roller bearings are key components. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing. Their surface finish maximizes lubricant film formation and optimizes rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.

The range of MBY® cylindrical roller bearings comprises the basic types.
MBY® single row cylindrical roller bearings, caged, mainly of the NU, NJ, NUP and N designs.
MBY® double row cylindrical roller bearings, caged, mainly of the NNUand NN designs.
MBY® single row full complement cylindrical roller bearings, mainly of the NCF and NJG designs.
MBY® double row full complement cylindrical roller bearings, mainly of the NNF design.

MBY® cylindrical roll bearings have the following design features:
1. Optimized design in ribs and rollers to enhance the axial load capacity
2. Optimized design in the geometric surface between rollers and raceway to balance the radial load  distribution
3. Limit the width of raceway undercut, increase the contact area between raceway and rollers and  enhance the radial load capacity
4. High standard material, strictly control the element content, e.g. Ti<30ppm
5. Low noise design, reaches to V1 grade noise level, contributes to the quieter running of automobile  engine and gearbox.

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d	D	B	rsmin	E	F	Mass	CrKN	CorKN	Limiting	Bearing Code	D1min	D1max
						(kg)			speed
140	190	50	1.5	176.3	154.3	4.42	265	570	1400	NNC4928V	148	182
150	210	60	2	191.7	165.7	7.08	380	850	1300	NNC4930V	159	201
220	300	80	2.1	276.9	240.9	17.8	680	1600	800	NNC4944V	230	290
120	180	80	0.6	164	134	7.07	400	750	480	NNF5024B	126	177
130	200	950	0.6	183.8	139.8	9.52	710	1220	450	NNF5026C	136	197
140	210	95	0.6	195.5	157.5	11.2	600	1120	400	NNF5028B	146	207
150	225	100	0.6	209.2	167.2	11.5	695	1290	380	NNF5030B	156	222
160	240	109	0.6	222.6	180.6	16.9	720	1400	360	NNF5032B	166	237
170	260	122	0.6	239	191	23.2	720	1400	360	NNF5034B	166	237
180	280	136	0.6	260.2	200.2	30.2	1340	2500	300	NNF5036C	186	277
190	290	136	0.6	269.8	209.8	31.6	1370	2600	300	NNF5038C	196	287
200	310	150	0.6	287.8	223.8	40.3	1560	3050	280	NNF5040C	206	307
130	180	50	1.5	165.8	143.8	2.67	255	530	1600	NNV4926V	138	172