NA69 RNA69 type heavy duty needle roller bearings have a through hardened outer ring which results in high static and dynamic load capacities and an ability to withstand overloading, shocks and vibration.They are particularly suitable for operations involving oscillating motion but may also accept high speed conditions where good alignment is necessary. This can more easily be achieved using a convex inner ring raceway (inner rings with suffix R6).The retention of the needles in the outer ring enables the bearing to be installed easily during assembly.

The shaft journal which is used directly as the inner ring raceway of the bearing should have adequate hardness and satisfactory surface finish. A hardness of 58-64 it will ensure full load capacity for the bearing. Lower hardness figures will entail a reduction in both static and dynamic capacities as shown in the table of dimensions.In cases of misalignment, a convex inner ring raceway can be machined directly at the shaft journal position by grinding, using a concave profile and inclining the diamond impregnated grinding wheel. A convex inner ring raceway calculated to permit misalignment of 1 in 1000 does not affect bearing load capacity. A larger convex radius is necessary for a greater degree of misalignment but this will reduce the effective bearing load capacity.

METRIC SERIES

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Shaft Dia	Part Number					Dimensions				Load Rating		Limiting speed	Weight(g)
Shaft Dia	Part Number					d	F	D	B	Co	Cor	Limiting speed	Weight(g)
mm	NKI	NKIS	NA49	NA69	NA48	mm				N		RPM	NKI	NKIS	NA49	NA69	NA48
5	NKI5/12TV					5	8	15	12	4450	4100	32500	12
5	NKI5/16TV					5	8	15	16	5800	5800	32500	15
6	NKI6/12TV					6	9	16	12	5100	5000	31000	14
6	NKI6/16TV					6	9	16	16	6600	7100	31000	17
7	NKI7/12TV					7	10	17	12	5300	5500	29500	14
7	NKI7/16TV					7	10	17	16	7000	7800	29500	18
9	NKI9/12					9	12	19	12	7200	7100	26500	17
9	NKI9/16					9	12	19	16	10100	11000	26500	22
10	NKI10/16					10	14	22	16	11400	11500	24600	29.4
	NKI10/20					10	14	22	20	14500	15600	24600	37
			NA4900			10	14	22	13	9600	9200	25000			23
12	NKI12/16					12	16	24	16	12800	13900	23200	33
	NKI12/20					12	16	24	20	16300	18800	23200 23600	42
			NA4901			12	16	24	13	10600	10900				26
				NA6901		12	16	24	22	18100	21600	23600				46
15	NKI15/16					15	19	27	16	14700	17400	21600	39
	NKI15/20					15	19	27	20	18700	23600	21600	49
			NA4902			15	20	28	13	12000	13600	21600			34
				NA6902		15	20	28	23	19500	25500	21600				64
		NKIS 15				15	22	35	20	27500	28000	19600		92
17	NKI17/16					17	21	29	16	15200	18700	20600	42.4
	NKI17/20					17	21	29	20	19300	25500	20600	53.4
			NA4903			17	22	30	13	12400	14600	20600	37		37
				NA6903		17	22	30	23	21100	29000	20600	72			72
		NKIS 17				17	24	37	20	29500	31000	18100		98
20	NKI20/16					20	24	32	16	16900	22300	18500	49
	NKI20/20					20	24	32	20	21400	30500	18500	61
			NA4904			20	25	37	17	23700	25500	17200			75
				NA6904		20	25	37	30	40500	51000	17200				141
		NKIS 20				20	28	42	20	32500	36500	15800		129
22	NKI22/16					22	26	34	16	17300	23600	17200	52
	NKI22/20					22	26	34	20	22000	32000	17200	65.4
			NA49/22			22	28	39	17	26000	29500	16100	80
				NA69/22		22	28	39	30	42000	55000	16100	150
25	NKI25/20					25	29	38	20	27500	39000	15300	76
25	NKI25/30					25	29	38	30	37000	57000	15300	124
			NA4905			25	30	42	17	26500	31500	14600			88
				NA6905		25	30	42	30	44000	59000	14600				161
		NKIS 25				25	32	47	22	38000	43500	13600		162
28	NKI28/20					28	32	42	20	29500	44500	14000	92.4
	NKI28/30					28	32	42	30	39000	63000	14000	146
			NA49/28			28	32	45	17	27500	33500	13400	98
				NA69/28		28	32	45	30	45500	63000	13400	182
30	NKI30/20					30	35	45	20	31000	48500	12900	108
	NKI30/30					30	35	45	30	46000	81000	12900	165
			NA4906			30	35	47	17	28500	35500	12700			101
				NA6906		30	35	47	30	49000	71000	12700				192
30		NKIS 30				30	37	52	22	41500	50000	12000		184
32	NKI32/20					32	37	47	20	28000	43500	12300	118
	NKI32/30					32	37	47	30	42000	73000	12300	180
			NA49/32			32	40	52	20	34500	47500	11700	158
				NA69/32		32	40	52	36	53000	82000	11700	288
35	NKI35/20					35	40	50	20	33500	56000	11400	122
	NKI35/30					35	40	50	30	44000	79000	11400	193
			NA4907			35	42	55	20	35500	50000	10900			170
				NA6907		35	42	55	36	54000	86000	10900				310
		NKIS 35				35	43	58	22	44000	57000	10500		220
38	NKI38/20					38	43	53	20	30500	51000	10700	136
38	NKI38/30					38	43	53	30	45500	85000	10700	207
40	NKI40/20					40	45	55	20	35000	62000	10200	136
	NKI40/30					40	45	55	30	52000	10300	10200	216
			NA4908			40	48	62	22	48500	67000	9600			230
				NA6908		40	48	62	40	74000	116000	9600				430
		NKIS 40				40	50	65	22	48000	67000	9300		281
42	NKI42/20					42	47	57	20	32500	56000	9800	148
42	NKI42/30					42	47	57	30	48500	94000	9800	222
45	NKI45/25					45	50	62	25	48500	87000	9200	217
	NKI45/35					45	50	62	35	67000	132000	9200	308
			NA4909			45	52	68	22	51000	73000	8700			271
				NA6909		45	52	68	40	79000	127000	8700				495
45		NKIS45				45	55	72	22	51000	74000	8400		336
50	NKI50/25					50	55	68	25	45500	82000	8400	270
	NKI50/35					50	55	68	35	60000	118000	8400	379
			NA4910			50	58	72	22	53000	80000	8000			274
				NA6910		50	58	72	40	82000	139000	8000				515
		NKIS 50				50	60	80	28	71000	98000	7500		518
55	NKI55/25					55	60	72	25	53000	103000	7700	255
	NKI55/35					55	60	72	35	63000	130000	7700	379
			NA4911			55	63	80	25	65000	100000	7300			393
				NA6911		55	63	80	45	102000	176000	7300				780
		NKIS 55				55	65	85	28	75000	108000	7000		558
60	NKI60/25					60	68	82	25	49500	89000	6800	394
	NKI60/35					60	68	82	35	70000	139000	6800	553
			NA4912			60	68	85	25	68000	108000	6800			426
				NA6912		60	68	85	45	106000	191000	6800				808
		NKIS 60				60	70	90	28	77000	113000	6500		560
65	NKI65/25					65	73	90	25	60000	100000	6300	467
	NKI65/35					65	73	90	35	85000	156000	6300	659
			NA4913			65	72	90	25	69000	112000	6300			456
				NA6913		65	72	90	45	108000	198000	6300				833
		NKIS 65				65	75	95	28	81000	123000	6100		641
70	NKI70/25					70	80	95	25	63000	119000	5800	521
	NKI70/35					70	80	95	35	89000	184000	5800	737
			NA4914			70	80	100	30	95000	156000	5800			728
70				NA6914		70	80	100	54	145000	265000	5800				1340
75	NKI75/25					75	85	105	25	78000	123000	5400	641
	NKI75/35					75	85	105	35	111000	193000	5400	908
			NA4915			75	85	105	30	97000	162000	5400			775
				NA6915		75	85	105	54	147000	275000	5400				1450
80	NKI80/25					80	90	110	25	81000	132000	5100	677
	NKI80/35					80	90	110	35	116000	208000	5100	959
			NA4916			80	90	110	30	101000	174000	5200			878
				NA6916		80	90	110	54	153000	300000	5200				1522
85	NKI85/26					85	95	115	26	83000	137000	4850	734
85	NKI85/36					85	95	115	36	121000	223000	4850	1040
85			NA4917			85	100	120	35	125000	237000	4800			1250
85				NA6917		85	100	120	63	188000	400000	4800				2200
90	NKI90/26					90	100	120	26	86000	146000	4600	778
	NKI90/36					90	100	120	36	125000	237000	4600	1090
			NA4918			90	105	125	35	129000	250000	4550			1312
				NA6918		90	105	125	63	195000	425000	4550				2310
95	NKI95/26					95	105	125	26	89000	155000	4400	816
	NKI95/36					95	105	125	36	129000	250000	4400	1145
			NA4919			95	110	130	35	131000	260000	4350			1371
				NA6919		95	110	130	63	197000	440000	4350				2500
100	NKI100/30					100	110	130	30	111000	210000	4200	990
	NKI100/40					100	110	130	40	143000	290000	4200	1330
			NA4920			100	115	140	40	144000	270000	4100			1900
110			NA4922			110	125	150	40	149000	290000	3750			2070
110					NA4822	110	120	140	30	106000	216000	3900
120			NA4924			120	135	165	45	205000	390000	3450			2860
120					NA4824	120	130	150	30	112000	239000	3650
130			NA4926			130	150	180	50	229000	470000	3150			3900
130					NA4826	130	145	165	35	134000	310000	3300
140			NA4928			140	160	190	50	237000	500000	2950			4150
140					NA4828	140	155	175	35	136000	325000	3100
150					NA4830	150	165	190	40	172000	400000	2900
160					NA4832	160	175	200	40	181000	435000	2700
170					NA4834	170	185	215	45	209000	510000	2550
180					NA4836	180	195	225	45	219000	550000	2420
190					NA4838	190	210	240	50	255000	690000	2280
200					NA4840	200	220	250	50	260000	720000	2150
220					NA4844	220	240	270	50	275000	790000	1980
240					NA4848	240	265	300	60	400000	1080000	1780
260					NA4852	260	285	320	60	415000	1160000	1660
280					NA4856	280	305	350	69	510000	1300000	1540
300					NA4860	300	330	380	80	700000	1770000	1420
320					NA4864	320	350	400	80	710000	1850000	1340
340					NA4868	340	370	420	80	730000	1940000	1270
360					NA4872	360	390	440	80	740000	2020000	1210
380					NA4876	380	415	480	100	1130000	2900000	1130

FAQ:
1. What is your the payment condition?

For regular products,No advance payment is needed, you can make 100% payment before shipment accordingly.

For customized products,our payment term normally is 30% of advance, the balance 70% against copy of BOL.

For our long term customers,you can pay 1 month after receiving the good.

2. What is your sales turnover?

Our whole year sales turnover in 2023 to 2024 is 11 million dollars

3. Do you have any certifications?

Yes, We are an IATF16949 certified needle bearings manufacturer since 2011.
4.What about the lead time?
Our production period is 30-45 days
5.What is your production capacity?
We are able to produce over 100 million pieces of bearings per year with different sizes and types
About us:
ChangzhouZhihua Bearings Co.,Ltd. is an ISO9001 & TS16949 certified company which specializes in manufacturing high quality drawn up needle roller bearings, cylindricial roller bearings and Related Components. We registered our own Trade Mark "CZH" in 2011.

Founded in 2004, CZH has grown to be one of the leading Manufacturer of Needle Roller Bearings, Cylindrical Roller Bearings. CZH is capable of Manufacturing both standard and custom bearings, we are dedicating to provide high quality products with competitive price since establishment. With the support of it's Engineering Department CZH is able to offer solutions and new projects which well suit the different requirements.

CZH's Know-how, Innovation, Solution and the most up-to-date production system are making CZH expand and develop constantly.

Our products are competitive worldwide.

Allow us an opportunity to use our expertise to meet your bearing needs.

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NA69 RNA69 Heavy Duty Metric Needle Bearings Withstand Overloading

Drawn Cup Needle Roller Bearings

Universal Joint Bearings

Caliper Bearing

Cam Followers And Track Rollers

Thrust Roller Bearings

Heavy Duty Needle Roller Bearings

Radial Needle Roller And Cage Assemblies

Drawn Cup Roller Clutch

Combined Needle Roller Bearings

Cylindrical Roller Bearings

Over Running Clutches

NA69 RNA69 Heavy Duty Metric Needle Bearings Withstand Overloading