Bearing Type	Mass	Designation	Mass	Dimensions									Basic Load Ratings				Limiting	Mounting		Designation
		with Dust		Fw	D	D1	D2	C	C1	C2	dw	r	Radial		Axial		Speed	Dimensions		Lnner Ring
		Shield											Cr	Cor	Cr	Cor		da	ra
													Dynamic	Static	Dynamic	Static
	g		g			max.	max.	-0.25	-0.2		E8	min.	kN	kN	kN	kN	rpm		max.	d×F×B
NKXR 15	42	NKXR 15Z	45	15	24	28.1	29.2	23	9	6.5	15	0.3	8.9	11.4	14.1	36.9	6500	23.7	0.3	IR 12×15×16
NKXR 17	50	NKXR 17Z	53	17	26	30.1	31.2	25	9	8	17	0.3	11.1	15.7	15.6	43.1	5500	25.7	0.3	IR 14×17×17
NKXR 20	80	NKXR 20Z	84	20	30	35.1	36.2	30	10	10.5	20	0.3	18	26.2	23.5	64.3	4200	30.7	0.3	IR 17×20×20
NKXR 25	120	NKXR 25Z	125	25	37	42.1	43.2	30	11	9.5	25	0.6	21.5	31.6	27.4	77	3400	37.7	0.6	IR 20×25×20
NKXR 30	135	NKXR 30Z	141	30	42	47.1	48.2	30	11	9.5	30	0.6	24.8	39.8	30.7	93.5	2900	42.7	0.6	IR 25×30×20
NKXR 35	157	NKXR 35Z	165	35	47	52.1	53.2	30	12	9	35	0.6	25.4	44.1	33.8	110	2500	47.7	0.6	IR 30×35×20
NKXR 40	204	NKXR 40Z	214	40	52	60.1	61.2	32	13	10	40	0.6	27.9	50.4	46	150.5	2000	55.7	0.6	IR 35×40×20
NKXR 45	244	NKXR 45Z	260	45	58	65.2	66.5	32	14	9	45	0.6	30.4	58.6	51.7	180.1	1900	60.5	0.6	IR 40×45×20
NKXR 50	268	NKXR 50Z	288	50	62	70.2	71.5	35	14	10	50	0.6	34.9	73.1	54.2	197.3	1700	65.5	0.6	IR 45×50×25
Note:
1.These load, speed and mass is reference of choice only.
2.If the cages are made of plastics, the maximum allowable working themperrature is 120? in
continuous working and 180? in shor tworking.
3.With grease lubrication, 60% of these limiting speed will apply.