IKO NA4930 Heavy Duty Needle Roller Bearing NA4930 Bearing

Keywords:

bearing needle roller bearing NA4930 IKO bearing

Category:

Needle Roller Bearings

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IKO NA4930 Heavy Duty Needle Roller Bearing NA4930 Bearing

Detail

Single row needle roller bearings incorporate cylindrical rollers that are small in diameter relative to their length. Owing to their large number of rollers, the bearings have a high load carrying capacity. The outer ring includes two integral flanges to guide the bearing axially and an annular groove with one or more lubrication holes to facilitate relubrication.

Needle Roller Bearings (needle bearing) is a cylindrical roller with roller bearings, relative to its diameter, roller both thin and long. This is called needle roller. Despite having a smaller cross-section,has a higher load bearing capacity, equipped with a thin and long needle bearing roller (roller diameter D≤5mm,L / D≥2.5, L is the length of the roller), so radial structure is compact, its diameter size and load capacity and other types of bearings, minimum diameter, especially for radial dimensions limited support structure.

It is widely used in automobile,machine toll,lathe,metallurgical,textile,printing industry and etc. Various machinery equipment. With this kind of bearing,machine design can realize the goal of small-scale & light weight.

This kind of bearing has multiple structural styles for the choice of customers,such as narrow & broad series,with or without inner rings,cages,rib or sealings. It can be designed according to the special structural requirements of customers as well.

Material:

Material for needle roller is GCr15 bearing steel,quench-hardening HRC60-65

Material for inner and outer rings is GCr15 bearing steel,quench-hardening HRC60-65

Material for cages is quality low-carbon steel or reinforced nylon.

Type	d mm	D mm	H mm	Dynamic	Static	W/kg
NA4924	120	165	45	144	304	2.84
NA4926	130	180	50	161.6	364	3.9
NA4928	140	190	50	167.2	388	4.05
NA4930	150	210	60	208.8	488	6.38
NA4932	160	220	60	216	520	6.75
NA4934	170	230	60	223.2	552	7.11
NA4936	180	250	69	300	712	10.2
NA4938	190	260	69	312	756	10.7
NA4940	200	280	80	404	944	15.4
NA4944	220	300	80	420	1016	16.7