Needle Roller Bearings with Inner Rings Nki40/20 Nki40/30 Nkis40

• Customization: Available
• Cage: Without Cage
• Rows Number: Single
• Model NO.: NKI40/20 NKI40/30 NKIS40
• Load Direction: Radial Bearing
• Style: With Inner Ring
• Material: Bearing Steel
• Type: Open
• Structure: Spherical/Cylindrical/Deep Groove/Angular Contact
• Precision Rating: P0 P6 P5 P4 P2
• Vibration: V1 V2 V3 V4
• Hardness: 59-63 HRC
• Applicable: Mining. Metallurgy. Agriculture. Industrial
• Tolerance: ABEC1, 3, 5, 7
• Main Market: Global
• Stock Qty: Rich /Great Supplying Ability
• After Service: Within 24 Hours Response
• Delivery Method: Air, Sea, Express
• Transport Package: Industrial or Single Box as Request
• Specification: standard
• Trademark: DOKING
• Origin: China
• HS Code: 84824000
• Production Capacity: 5000000/Year

Product Description

PRODUCT DETAILS

The needle roller bearing with inner ring is the "space optimization master" in the field of mechanical transmission. With a thin yet sturdy inner ring and slender needle rollers combined, it achieves strong radial load-bearing capacity in a compact installation space, and can easily handle high-load conditions. The high-precision manufacturing process combined with the scientific design of the cage ensures that the needles are evenly distributed and operate flexibly, significantly reducing friction loss and noise. It is widely used in industrial automation equipment, aerospace components, and other fields, providing a solid guarantee for the precise operation of mechanical equipment with reliable stability and efficient performance.

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CATALOGUE

Shaft Diameter	Bearing No.	Boundary Dimensions					Basic Load Ratings		Limiting Speed
		d	F	D	B	r(s)	C	Co	Oil
mm		mm				min.	N		rpm
5	NKI5/12TN	5	8	15	12	0.3	3950	4100	32000
	NKI 5/16 TN	5	8	.15	16	0.3	5100	5800	32000
6	NKI&/12TN	6	9	16	12	0.3	4500	5000	31000
	NKI6/16 TN	6	9	16	16	0.3	5900	7100	31000
	NKIS6TN	6	10	19	13	0.3	5800	6000	29000
7	NKI7/12TN	7	10	17	12	0.3	4750	5500	29000
	NKI7/16TN	7	10	17	16	0.3	6200	7800	29000
	NKIS7TN	7	12	22	16	0.6	9600	10400	26000
8	NKIS8	8	14	25	16	0.6	14400	13800	24000
9	NKI9/12	9	12	19	12	0.3	6400	7100	27000
	NKI9/16	9	12	19	16	0.3	9000	11000	27000
	NKIS9	9	15	26	16	0.6	14400	14000	23000
10	NK110/16	10	14	22	16	0.3	10100	11500	25000
	NK110/20	10	14	22	20	0.3	12800	15600	25000
	INKIS10	10	16	28	16	0.6	15700	15800	22000
	NA 4900	10	14	22	13	0.3	8500	9200	25000
12	NK112/16	12	16	24	16	0.3	11300	13900	23000
	NK112/20	12	16	24	20	0.3	14400	18800	23000
	INKIS12	12	18	30	16	0.6	16800	17700	21000
	NA 4901	12	16	24	13	0.3	9400	10900	23000
	NA 6901	12	16	24	22	0.3	16000	21600	23000
15	NK115/16	15	19	27	16	0.3	13000	17400	22000
	NK115/20	15	19	27	20	0.3	16500	23600	22000
	INKIS 15	15	22	35	20	0.6	24500	28000	18000
	NA 4902	15	20	28	13	0.3	10600	13600	21000
	NA 6902	15	20	28	23	0.3	17300	25500	21000
17	NK117/16	17	21	29	16	0.3	13500	18700	21000
	NK117/20	17	21	29	20	0.3	17100	25500	21000
	NKIS17	17	24	37	20	0.6	26000	31000	17000
	NA 4903	17	22	30	13	0.3	11000	14600	20000
	NA 6903	17	22	30	23	0.3	18600	29000	20000
20	NKI 20/16	20	24	32	16	0.3	15000	22300	18000
	NKI 20/20	20	24	32	20	0.3	19000	30500	18000
	NKIS20	20	28	42	20	0.6	28500	36500	15000
	NA 4904	20	25	37	17	0.3	21000	25500	17000
	NA 6904	20	25	37	30	0.3	36000	51000	17000
22	NKI 22/16	22	26	34	16	0.3	15300	23600	17000
	NKI 22/20	22	26	34	20	0.3	19400	32000	17000
	NA 49/22	22	28	39	17	0.3	22800	29500	15000
	NA 69/22	22	28	39	30	0.3	37500	55000	15000
25	NKI 25/20	25	29	38	20	0.3	21900	34000	15000
	NKI 25/30	25	29	38	30	0.3	32500	57000	15000
	NKIS25	25	32	47	22	0.6	33500	43500	13000
	NA 4905	25	30	42	17	0.3	23600	31500	14000
	NA 6905	25	30 ,	42	30	0.3	29000	59000	14000
28	NKI 28/20	28	32	42	20	0.3	23100	37500	14000
	NKI 28/30	28	32	42	30	0.3	34500	63000	14000
	NA 49/28	28	32	45	17	0.3	24400	33500	14000
	NA 69/28	28	32	45	30	0.3	40500	63000	14000
30	NKI 30/20	30	35	45	20	0.3	24300	41500	13000
	NKI 30/30	30	35	45	30	0.3	36500	69000	13000
	NKIS 30	30	37	52	22	0.6	36500	50000	12000
	NA 4906	30	35	47	17	0.3	25000	35500	13000
	NA 6906	30	35	47	30	0.3	43500	71000	13000
32	NKI 32/20	32	37	47	2b	0.3	24900	43500	12000
	NKI 32/30	32	37	47	30	0.3	37000	73000	12000
	NA 49/32	32	40	52	20	0.6	30500	47500	11000
	NA 69/32	32	40	52	36	0.6	47000	82000	11000
35	NKI 35/20	35	40	50	20	0.3	26000	47000	11000
	NKI 35/30	35	40	50	30	0.3	39000	79000	11000
	NKIS 35	35	43	58	22	0.6	39000	57000	10000
	NA 4907	35	42	55	20	0.6	31500	50000	11000
	NA 6907	35	42	55	36	0.6	48000	86000	11000
38	NKI 38/20	38	43	53	20	0.3	27000	51000	11000
	NKI 38/30	38	43	53	30	0.3	40500	85000	11000
40	NKI 40/20	40	45	55	20	0.3	27500	53000	10000
	NKI 40/30	40	45	55	30	0.3	41000	88000	10000
	NKIS 40	40	50	65	22	1	42500	67000	9000
	NA 4908	40	48	62	22	0.6	43000	67000	9000
	NA 6908	40	48	62	40	0.3	66000	116000	9000
42	NKI 42/20	42	47	57	20	0.3	28500	56000	10000
	NKI 42/30	42	47	57	30	0.3	43000	94000	10000
45	NKI 45/25	45	50	62	25	0.6	38000	74000	9000
	NKI 45/35	45	50	62	35	0.6	50000	106000	9000
	NKIS 45	45	55	72	22	1	45000	74000	8000
	NA 4909	45	52	68	22	0.6	45000	73000	8500
	NA 6909	45	52	68	40	0.6	69000	127000	8500
50	NKI 50/25	50	55	68	25	0.6	40000	82000	8500
	NKI 50/35	50	55	68	35	0.6	53000	118000	8500
	NKIS 50	50	60	80	28	1.1	63000	98000	7500
	NA 4910	50	58	72	22	0.6	47000	80000	8000
	NA 6910	50	58	72	40	0.6	73000	139000	8000
55	NKI 55/25	55	60	72	25	0.6	42000	90000	7500
	NKI 55/35	55	60	72	35	0.6	56000	130000	7500
	NKIS 55	55	65	85	28	1.1	67000	108000	7000
	NA 4911	55	63	80	25	1	58000	100000	7000
	NA 6911	55	63	80	45	1	90000	176000	7000
60	NKI 60/25	60	68		25	0.6	43500	89000	7000
	NKI 60/35	60	68	82	35	0.6	62000	132	7000
	NKIS 60	60	70	90	28	1.1	68000	113000
	NA 4912	60	68	85	25	1	60000	108000	6500
	NA 6912	60	68	85	45	1	94000	191000	6500
65	NKI 65/25	65	73	90	25	1	53000	100000	6500
	NKI 65/35	65	73	90	35	1	75000	156000	6500
	NKIS 65	65	75	95	28	1.1	71000	123000	6000
	NA 4913	65	72	90	25	1	61000	112000	6500
	NA 6913	65	72	90	45	1	95000	198000	6500
70	NKI 70/25	70	80	95	25	1	56000	119000	6000
	NKI 70/35	70	80	95	35	1	78000	184000	6000
	NKIS70	70	80	100	28	1.1	75000	133000	5500
	NA 4914	70	80	100	30	1	84000	156000	5500
	NA 6914	70	80	100	54	1	128000	265000	5500
75	NKI 75/25	75	85	105	25	1	69000	123000	5500
	NKI 75/35	75	85	105	35	1	98000	193000	5500
	NA 4915	75	85	105	30	1	86000	162000	5500
	NA 6915	75	85	105	54	1	130000	275000	5500
80	NKI 80/25	80	90	110	25	1	72000	132000	5000
	NKI 80/35	80	90	110	35	1	103000	208000	5000
	NA 4916	80	90	110	30	1	89000	174000	5000
	NA 6916	80	90	110	54	1	135000	300000	5000
85	NKI 85/26	85	95	115	26	1	73000	137000	4800
	NKI 85/36	85	95	115	36	1	107000	223000	4800
	NA 4917	85	100	120	35	1.1	111000	237000	4600
	NA 6917	85	100	120	63	1.1	166000	400000	4600
90	NKI 90/26	90	100	120	26	1	76000	146000	4600
	NKI 90/36	90	100	120	36	1	111000	237000	4600
	NA 4918	90	105	125	35	1.1	114000	250000	4400
	NA6918	90	105	125	63	1.1	172000	425000	4400
95	NKI 95/26	95	105	125	26	1	78000	155000	4400
	NKI 95/36	95	105	125	36	1	114000	250000	4400
	NA 4919	95	110	130	35	1.1	116000	260000	4200
	NA 6919	95	110	130	63	1.1	174000	440000	4200

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