Wholesale Nk Style Standard Needle Roller Bearing Without Inner

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Needle roller bearings are essentially cylindrical roller bearings except that their cylindrical rollers have a length 3 to 10 times their diameter (versus a length less than 3 times their diameter). Needle bearings are also essentially bearings that utilize small & cylindric rollers. Therefore, the ratio of the bearing outside diameter to the inscribed circle diameter is small, and they have a rather high radial load capacity.

Needle roller bearings NK series that have metric dimensions, precision ground raceways with ribs, without Inner Rings, cage guided rollers, with/without Seals. And it has no inner ring, therefore they’re lighter than needle roller bearings of the series NKI. They can be mounted directly on the shaft. They support relatively high radial loads and allow higher speeds.

Needle roller bearings without an inner ring are an excellent choice for compact bearing arrangements if the shaft can be hardened and ground. Eliminating the need for a separate inner ring enables a larger shaft diameter and a stiffer arrangement. Axial displacement of the shaft relative to the housing is only limited by the width of the raceway on the shaft. By machining the shaft raceways to the appropriate dimensional and form accuracy, it is possible to obtain bearing arrangements with heightened running accuracy.

Application

Needle roller bearings are ideal for many of the following applications: transmissions, transfer cases, engines, valve trains, steering and braking systems, axle supports, outboard engines, textile industry, power tools, copiers, fax machines, paper-moving equipment, and appliances.

Bearing Model	Shaft Diameter （mm）	Dimensions(mm)			Basic Load Rating(N)		Limiting Speed(rpm)	Weight(Kg)
Bearing Model	Shaft Diameter （mm）	Fw	D	C	Dyn.C	Stat.Co	Oil	Weight(Kg)
NK5/10	5	5	10	10	2100	1400	36780	0.0033
NK5/8	5	5	10	8	2101	1401	36781	0.0033
NK5/12	5	5	10	12	3000	2650	39000	0.00357
NK6/10	6	6	12	10	2600	2200	37000	0.005
NK6/12	6	6	12	12	3350	3150	37000	0.006
NK7/10	7	7	14	10	2850	2650	34000	0.0069
NK7/12	7	7	14	12	3650	3600	34000	0.008
NK8/12	8	8	15	12	3950	4100	32000	0.0087
NK8/16	8	8	15	16	5100	5800	32000	0.012
NK9/12	9	9	16	12	5101	5801	32001	0.01
NK10/10	10	10	17	10	4751	5301	29001	0.01
NK10/12	10	10	17	12	4752	5302	29002	0.010
NK10/16	10	10	17	16	6200	7800	29000	0.013
NK12/12	12	12	19	12	6000	6400	27000	0.012
NK12/16	12	12	19	16	8200	9800	27000	0.016
NK14/16	14	14	22	16	10100	11500	25000	0.021
NK14/12	14	14	22	12	1401	13801	24001	0.025
NK14/20	14	14	22	20	12800	15600	25000	0.027
NK15/12	15	15	23	12	8600	11000	21000	0.025
NK15/16	15	15	23	16	10700	12700	24000	0.022
NK15/20	15	15	23	20	13600	17200	24000	0.027
NK16/16	16	16	24	16	11300	13900	23000	0.024
NK16/20	16	16	24	20	10400	16800	23000	0.029
NK17/16	17	17	25	16	9000	13500	14000	0.024
NK17/20	17	17	25	20	15000	20000	23000	0.031
NK18/20	18	18	26	20	15500	19800	22000	0.032
NK18/16	18	18	26	16	12500	16200	22000	0.026
NK19/16	19	19	27	16	13000	17000	22000	0.028
NK20/16	20	20	28	16	10500	13800	21000	0.03
NK20/20	20	20	28	20	11500	21800	21000	0.034
NK21/12	21	21	29	12	13001	25001	12001	0.033
NK21/16	21	21	29	16	13500	18700	21000	0.029
NK21/20	21	21	29	20	13501	18701	21001	0.037
NK22/16	22	22	30	16	13500	18000	11500	0.03
NK22/20	22	22	30	20	12897	20397	14997	0.045
NK24/16	24	24	32	16	12898	20398	14998	0.032
NK25/16	25	25	33	16	12900	20400	15000	0.033
NK25/20	25	25	33	20	16800	28500	15000	0.043
NK25/30	25	25	33	30	18800	30500	165000	0.062
NK26/16	26	26	34	16	15000	23000	16300	0.034
NK26/20	26	26	34	20	17000	30000	16300	0.042
NK28/20	27	28	37	20	22000	34000	16500	0.053
NK28/30	27	28	37	30	33000	57000	12000	0.082
NK29/20	29	29	38	20	21900	34000	15000	0.054
NK29/30	29	29	38	30	32500	57000	15000	0.081
NK30/20	30	30	40	20	20600	32000	15000	0.065
NK30/30	30	30	40	30	31500	50000	15000	0.098
NK32/20	32	32	42	20	22600	33500	15000	0.068
NK32/30	32	32	42	30	33500	60000	12000	0.103
NK35/20	35	35	45	20	13800	26900	12000	0.074
NK37/20	37	37	47	20	24900	43500	12000	0.077
NK37/30	37	37	47	30	37000	73000	12000	0.113
NK38/20	38	38	48	20	25500	45000	12000	0.079
NK38/30	38	38	48	30	38000	76000	12000	0.116
NK40/20	40	40	50	20	26500	43000	11000	0.082
NK40/30	40	40	50	30	37500	79000	11000	0.125
NK42/20	42	42	52	20	23900	45000	10000	0.086
NK42/30	42	42	52	30	27000	49000	10000	0.13
NK43/20	43	43	53	20	25700	75000	10000	0.086
NK43/30	43	43	53	30	39000	75000	10000	0.133
NK45/20	45	45	55	20	19800	46500	7650	0.095
NK45/30	45	45	55	30	41000	88000	7650	0.14
NK47/20	47	47	57	20	28500	56000	7650	0.095
NK47/30	47	47	57	30	43000	94000	7650	0.145
NK50/14	47	50	64	14	32000	70100	8140	0.167
NK50/15	47	50	65	15	40000	62000	8140	0.178
NK50/27	47	50	67	27	40001	62001	8141	0.21
NK55/25	55	55	68	25	30600	60800	7600	0.18
NK55/30	55	55	68	30	48000	63000	7600	0.186
NK55/35	55	55	68	35	55000	74000	7600	0.25
NK60/25	60	60	72	25	39000	86000	7000	0.186
NK60/35	60	60	72	35	56000	130000	7000	0.258
NK65/25	65	65	78	25	44000	98000	7000	0.217
NK65/35	65	65	78	35	59000	142000	7000	0.053
NK68/25	65	68	82	25	43500	89000	7000	0.241
NK70/25	70	70	85	25	44500	92000	6500	0.302
NK70/35	70	70	85	35	63000	144000	6500	0.37
NK75/25	75	75	92	25	54000	104000	6000	0.315
NK75/35	75	75	92	35	77000	162000	6000	0.445
NK80/25	75	80	95	25	68998	122998	5498	0.3
NK80/35	75	80	95	35	68999	122999	5499	0.35
NK85/25	75	85	105	25	69000	123000	5500	0.425
NK85/35	75	85	105	35	98000	193000	5500	0.6
NK90/35	75	90	110	30	103000	20800	5000	0.63
NK95/26	95	95	115	26	73000	137000	4800	0.49
NK95/36	95	95	115	36	107000	223000	4800	0.68
NK100/30	95	100	120	30	107001	223001	4801	0.69
NK100/36	95	100	120	36	111000	237000	4600	0.715
NK105/26	95	105	125	26	78000	155000	4000	0.538
NK105/36	95	105	125	36	114000	250000	4000	0.71
NK110/30	95	110	130	30	98000	21000	4200	0.647
NK110/40	95	110	130	40	127000	29000	4200	0.83
NK115/12	95	115	140	12	156000	37000	4200	0.85
NK115/15	95	115	140	15	185000	45000	4200	0.88
NK120/40	120	120	140	40	214000	53000	4200	0.91