D 24-62mm-Needle roller/ Cylindrical roller thrust bearing, without Inner ring, with or without cover --NEY（DuangDong）Bearing Industry Co.,LTD

Index >> Machined needle roller bearing >> Needle roller/ Cylindrical roller thrust bearing, without Inner ring, with or without cover

D 24-62mm

Product Parameter

Without cover Designation	X-life	Mass m ≈kg	Without cover Designation	X-life	Mass m ≈kg	Principal dimensions mm									Fitting dimansion mm		Basic load ratings KN				Fatigue limit load N		Limiting Speed n_G min^–1	Reference Speed n_B min^–1	Recommended Inner ring Designation
Without cover Designation	X-life	Mass m ≈kg	Without cover Designation	X-life	Mass m ≈kg	F_w	D	D₁ max	D₂ max	C -0.25	C₁ –0.2	C₂	d_w E8	r min	d_a	r_a max	Radial Dyc/C_r	Radial Stc/C_or	Axial Dyc/C_r	Axial Stc/C_or	C_ur	C_ua	Limiting Speed n_G min^–1	Reference Speed n_B min^–1	Recommended Inner ring Designation
NKXR15	XL	42	NKXR15-Z	XL	45	15	24	28.1	29.2	23	9	6.5	15	0.3	23.7	0.3	12100	12700	14400	28500	2320	4000	9200	6500	IR12X15X16
NKXR17	XL	50	NKXR17-Z	XL	53	17	26	30.1	31.2	25	9	8	17	0.3	25.7	0.3	13500	15000	15900	33500	2750	4650	8400	5500	IR14X17X17
NKXR20	XL	80	NKXR20-Z	XL	84	20	30	35.1	36.2	30	10	10.5	20	0.3	30.7	0.3	18600	23800	24900	53000	4150	7300	7200	4200	IR17X20X20
NKXR25	XL	120	NKXR25-Z	XL	125	25	37	42.1	43.2	30	11	9.5	25	0.6	37.7	0.6	21300	30500	33500	76000	5300	7100	5800	3400	IR20X25X20
NKXR30	XL	135	NKXR30-Z	XL	141	30	42	47.1	48.2	30	11	9.5	30	0.6	42.7	0.6	25500	36000	35500	86000	6300	8000	5000	2900	IR25X30X20
NKXR35	XL	157	NKXR35-Z	XL	165	35	47	52.1	53.2	30	12	9	35	0.6	47.7	0.6	27500	41500	39000	101000	7300	9500	4400	2500	IR30X35X20
NKXR40	XL	204	NKXR40-Z	XL	214	40	52	60.1	61.2	32	13	10	40	0.6	55.7	0.6	29500	47000	56000	148000	8300	14500	3900	2000	IR35X40X20
NKXR45	XL	244	NKXR45-Z	XL	260	45	58	65.2	66.5	32	14	9	45	0.6	60.6	0.6	31000	53000	59000	163000	9300	16000	3500	1900	IR40X45X20
NKXR50	XL	268	NKXR50-Z	XL	288	50	62	70.2	71.5	35	14	10	50	0.6	65.5	0.6	43000	74000	61000	177000	12700	17400	3200	1700	IR45X50X25

Introduction

& nbsp; features these series include radial needle roller bearings and roller bearing components that can bear axial force. they can bear high radial force and axial force in one direction, while nkib bearings can bear axial force in two directions, which can be used as positioning bearing or semi positioning bearing, as shown in Figure 1 .

O: P > O: P > figure 1 & nbsp; dynamic bearing capacity in radial and axial direction

X-life the combined needle roller bearing is X-life bearing. These bearings have optimized raceway surfaces. so it has higher bearing capacity and longer rated life. the existing design is as follows: ■ needle roller / thrust ball bearing ■ needle roller / thrust cylindrical needle roller bearing needle roller / angular contact ball bearing. needle roller / thrust ball bearing these series are very compact in radial direction without inner ring. However, they require that the raceway of the shaft be hardened and ground. bearings NX and NX.. - Z include thrust ball bearings and housings filled with balls. Nkx and Nkx.. - Z series include axial bearing parts, which are composed of ball and pressed steel plate cages or nylon cages. Nkx.. - Z including thrust bearing parts with cover. lubrication the outer ring has lubricating oil groove and lubricating oil hole for lubricating. NX and Nkx adopt oil lubrication. The cover NX has lubrication holes. NX.. - Z and Nkx.. - Z adopt grease lubrication. the thrust bearing parts adopt lithium-based composite grease ga08 . There are no lubrication holes in the cover. needle roller / thrust cylindrical roller bearing these series have no inner ring, so the radial dimension is very compact. However, they require that the raceway of the shaft be hardened and ground. series nkxr and nkxr.. - Z have axial bearing parts, which are composed of roller and nylon cage components. nkxr.. - Z including thrust bearing parts with cover. lubrication the outer ring has lubricating oil groove and lubricating oil hole for lubricating. nkxr oil lubrication. nkxr.. - Z suitable for grease lubrication. The thrust bearing parts are lubricated with lithium base compound grease ga08 . there is no lubrication hole in the cover. needle roller / angular contact ball bearing combined bearings nkia and nkib have inner rings.