d 200-380mm-With Inner ring Open--NEY（DuangDong）Bearing Industry Co.,LTD

Index >> Machined needle roller bearing >> With Inner ring Open

d 200-380mm

Product Parameter

Designation	X-life	Mass m ≈kg	Principal dimensions mm						Basic load ratings KN		Fatigue limit load C_ur/N	Limiting Speed n_G min^–1	Reference Speed n_B min^–1
Designation	X-life	Mass m ≈kg	d	F	D	B	r min	s²⁾	Dyc C_r	Stc C_or	Fatigue limit load C_ur/N	Limiting Speed n_G min^–1	Reference Speed n_B min^–1
NA4840	XL	5840	200	220	250	50	1.5	1.5	260000	720000	102000	2150	1250
NA4844	XL	6380	220	240	270	50	1.5	1.5	275000	790000	110000	1980	1110
NA4848	XL	10000	240	265	300	60	2	2	400000	1080000	150000	1780	960
NA4852	XL	10600	260	285	320	60	2	2	415000	1160000	158000	1660	870
NA4856	XL	15300	280	305	350	69	2	2.5	510000	1300000	175000	1540	840
NA4860	XL	21800	300	330	380	80	2.1	2	700000	1770000	235000	1420	720
NA4864	XL	23000	320	350	400	80	2.1	2	710000	1850000	242000	1340	670
NA4868	XL	24200	340	370	420	80	2.1	2	730000	1940000	249000	1270	620
NA4872	XL	25600	360	390	440	80	2.1	2	740000	2020000	255000	1210	590
NA4876	XL	42600	380	415	480	100	2.1	2	1130000	2900000	370000	1130	510

Introduction

& nbsp; features single or double row needle roller bearing with flange consists of machined outer ring, needle roller and cage components with flange and separable inner ring. X-life needle roller bearing with flange is X-life bearing. these bearings have optimized raceway surfaces. Therefore, it has higher bearing capacity and longer rated life. needle roller bearing without inner ring needle roller bearings without inner ring have extremely compact radial dimensions. However, they require that the raceway of the shaft be hardened and ground. '> 40mm . needle roller bearing with inner ring if the shaft cannot be used as the raceway of rolling bearing, the bearing with inner ring shall be used. this kind of bearing has a single row design, but also a double row design na69 , its d & Ge; 32mm . inner circle displacement the standard inner ring is allowed to have displacement in the axial direction not exceeding the value listed in the dimension table. When large displacement occurs, the standard ferrule can be replaced by wide inner ring IR . inner circle: see page 776 . seal And. On both sides are contact seals. lubrication bearings are lubricated with composite lithium grease ga08 . arcanol load150 suitable for relubrication. For this purpose, the outer ring has a lubricating groove and a lubricating hole. 'EN-US ' > d & le; The 7mm series of NKI have no lubrication holes and grooves. sealing ring and wide inner ring in order to prevent the influence of the outside world, the combination of seal ring series ( G , GR and SD ) and wide inner ring IR can be used for bearing sealing. The sealing ring and inner ring should match the needle bearing. The outer surface of the inner ring can be used as the sliding surface of the sealing lip. sealing ring: see page 804 and tpi128 , single lip and double lip sealing rings. working temperature the operating temperature range of open bearing is & ndash; 20 ℃ to + 120 ℃. limited by grease and sealing materials, the operating temperature range of needle bearing with seal is & ndash; 20 ℃ to + 100 ℃. cage there are two kinds of cages: steel cage and nylon cage. The suffix of the bearing with nylon cage is TV . before using nylon cage bearing, check the compatibility of lubricant and cage material (PA66 GF / h) . suffix see the following table for suffixes of existing designs. suffix of existing design

suffix