Open 4-Point Contact-Type X Bearings | High Precision and Durable Bearings-LYNBC

Open 4-Point Contact-Tppe X (NBKAA 3/16" x 3/16")

NBKAA SERIES 3/16" x 3/16"
NICE PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						Appx Weight LBS/KG
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
NBKAA10XL0	1.000	1.375	1.140	1.235	290	245	730	370	170	110	0.030
	25.400	34.925	28.956	31.369	290	245	730	370	170	110	0.014
NBKAA15XL0	1.500	1.875	1.640	1.735	400	295	1,000	460	340	185	0.040
	38.1	47.625	41.656	44.069	400	295	1,000	460	340	185	0.018
NBKAA17XL0	1.750	2.125	1.890	1.985	460	320	1,140	500	440	230	0.040
	44.450	53.975	48.006	50.419	460	320	1,140	500	440	230	0.018

Open 4-Point Contact-Tppe X (NBKA 1/4" x 1/4")

NBKA SERIES 1/4" x 1/4"
NICE PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						Appx Weight LBS/KG
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
NBKA020XP0	2.000	2.500	2.186	2.314	680	515	1,710	790	770	435	0.100
	50.800	63.500	55.524	58.776	680	515	1,710	790	770	435	0.045
NBKA025XP0	2.500	3.000	2.686	2.814	830	585	2,090	910	1,150	600	0.130
	63.500	76.200	68.224	71.476	830	585	2,090	910	1,150	600	0.059
NBKA030XP0	3.000	3.500	3.186	3.314	990	645	2,470	1,010	1,600	785	0.150
	76.200	88.900	80.924	84.176	990	645	2,470	1,010	1,600	785	0.068
NBKA035XP0	3.500	4.000	3.686	3.814	1,140	700	2,850	1,110	2,130	985	0.180
	88.900	101.600	93.624	96.876	1,140	700	2,850	1,110	2,130	985	0.082
NBKA040XP0	4.000	4.500	4.186	4.314	1,290	755	3,220	1,210	2,740	1,205	0.190
	101.600	114.300	106.324	109.576	1,290	755	3,220	1,210	2,740	1,205	0.086
NBKA042XP0	4.250	4.750	4.436	4.564	1,370	785	3,410	1,260	3,070	1,320	0.200
	107.950	120.650	112.674	115.926	1,370	785	3,410	1,260	3,070	1,320	0.091
NBKA045XP0	4.500	5.000	4.686	4.814	1,440	810	3,600	1,310	3,420	1,440	0.220
	114.300	127.000	119.024	122.276	1,440	810	3,600	1,310	3,420	1,440	0.100
NBKA047XP0	4.750	5.250	4.936	5.064	1,520	835	3,790	1,350	3,790	1,565	0.230
	120.650	133.350	125.374	128.626	1,520	835	3,790	1,350	3,790	1,565	0.104
NBKA050XP0	5.000	5.500	5.186	5.314	1,590	860	3,980	1,400	4,180	1,695	0.240
	127.000	139.700	131.724	134.976	1,590	860	3,980	1,400	4,180	1,695	0.109
NBKA055XP0	5.500	6.000	5.686	5.814	1,750	910	4,360	1,480	5,020	1,960	0.250
	139.700	152.400	144.424	147.676	1,750	910	4,360	1,480	5,020	1,960	0.113
NBKA060XP0	6.000	6.500	6.186	6.314	1,900	955	4,740	1,570	5,930	2,240	0.280
	152.400	165.100	157.124	160.376	1,900	955	4,740	1,570	5,930	2,240	0.127
NBKA065XP0	6.500	7.000	6.686	6.814	2,050	1,000	5,120	1,650	6,910	2,535	0.300
	165.100	177.800	169.824	173.076	2,050	1,000	5,120	1,650	6,910	2,535	0.136
NBKA070XP0	7.000	7.500	7.186	7.314	2,200	1,045	5,500	1,730	7,980	2,845	0.310
	177.800	190.500	182.524	185.776	2,200	1,045	5,500	1,730	7,980	2,845	0.141
NBKA075XP0	7.500	8.000	7.686	7.814	2,350	1,090	5,880	1,810	9,120	3,165	0.340
	190.500	203.200	195.224	198.476	2,350	1,090	5,880	1,810	9,120	3,165	0.154
NBKA080XP0	8.000	8.500	8.186	8.314	2,500	1,130	6,260	1,890	10,330	3,500	0.380
	203.200	215.900	207.924	211.176	2,500	1,130	6,260	1,890	10,330	3,500	0.172
NBKA090XP0	9.000	9.500	9.186	9.314	2,810	1,210	7,020	2,040	12,990	4,205	0.440
	228.600	241.300	233.324	236.576	2,810	1,210	7,020	2,040	12,990	4,205	0.200
NBKA100XP0	10.000	10.500	10.186	10.314	3,110	1,290	7,780	2,180	15,940	4,955	0.500
	254.000	266.700	258.724	261.976	3,110	1,290	7,780	2,180	15,940	4,955	0.227
NBKA110XP0	11.000	11.500	11.186	11.314	3,410	1,360	8,540	2,320	19,210	5,750	0.520
	279.400	292.100	284.124	287.376	3,410	1,360	8,540	2,320	19,210	5,750	0.236
NBKA120XP0	12.000	12.500	12.186	12.314	3,720	1,435	9,300	2,450	22,770	6,585	0.560
	304.800	317.500	309.524	312.776	3,720	1,435	9,300	2,450	22,770	6,585	0.254

Open 4-Point Contact-Tppe X (NBKB 5/16" x 5/16")

NBKB SERIES 5/16" x 5/16"
NICE PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						Appx Weight LBS/KG
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
NBKB020XP0	2.000	2.625	2.231	2.393	930	760	2,340	1,130	1,080	660	0.160
	50.800	66.675	56.667	60.782	930	760	2,340	1,130	1,080	660	0.073
NBKB025XP0	2.500	3.125	2.731	2.893	1,140	850	2,840	1,290	1,600	895	0.190
	63.500	79.375	69.367	73.482	1,140	850	2,840	1,290	1,600	895	0.086
NBKB030XP0	3.000	3.625	3.231	3.393	1,340	935	3,350	1,440	2,220	1,160	0.240
	76.200	92.075	82.067	86.182	1,340	935	3,350	1,440	2,220	1,160	0.109
NBKB035XP0	3.500	4.125	3.731	3.893	1,540	1,015	3,860	1,590	2,940	1,450	0.290
	88.900	104.775	94.767	98.882	1,540	1,015	3,860	1,590	2,940	1,450	0.132
NBKB040XP0	4.000	4.625	4.231	4.393	1,750	1,090	4,370	1,720	3,770	1,765	0.300
	101.600	117.475	107.467	111.582	1,750	1,090	4,370	1,720	3,770	1,765	0.136
NBKB042XP0	4.250	4.875	4.481	4.643	1,830	1,120	4,570	1,780	4,170	1,915	0.310
	107.950	123.825	113.817	117.932	1,830	1,120	4,570	1,780	4,170	1,915	0.141
NBKB045XP0	4.500	5.125	4.731	4.893	1,950	1,165	4,880	1,850	4,690	2,105	0.330
	114.300	130.175	120.167	124.282	1,950	1,165	4,880	1,850	4,690	2,105	0.150
NBKB047XP0	4.750	5.375	4.981	5.143	2,030	1,195	5,080	1,900	5,140	2,265	0.340
	120.650	136.525	126.517	130.632	2,030	1,195	5,080	1,900	5,140	2,265	0.154
NBKB050XP0	5.000	5.625	5.231	5.393	2,150	1,235	5,380	1,980	5,720	2,465	0.380
	127.000	142.875	132.867	136.982	2,150	1,235	5,380	1,980	5,720	2,465	0.172
NBKB055XP0	5.500	6.125	5.731	5.893	2,360	1,305	5,890	2,100	6,850	2,845	0.410
	139.700	155.575	145.567	149.682	2,360	1,305	5,890	2,100	6,850	2,845	0.186
NBKB060XP0	6.000	6.625	6.231	6.393	2,560	1,370	6,400	2,220	8,080	3,245	0.440
	152.400	168.275	158.267	162.382	2,560	1,370	6,400	2,220	8,080	3,245	0.200
NBKB065XP0	6.500	7.125	6.731	6.893	2,760	1,435	6,910	2,340	9,410	3,670	0.470
	165.100	180.975	170.967	175.082	2,760	1,435	6,910	2,340	9,410	3,670	0.213
NBKB070XP0	7.000	7.625	7.231	7.393	2,970	1,500	7,420	2,450	10,850	4,110	0.500
	177.800	193.675	183.667	187.782	2,970	1,500	7,420	2,450	10,850	4,110	0.227
NBKB075XP0	7.500	8.125	7.731	7.893	3,170	1,560	7,920	2,560	12,380	4,570	0.530
	190.500	206.375	196.367	200.482	3,170	1,560	7,920	2,560	12,380	4,570	0.240
NBKB080XP0	8.000	8.625	8.231	8.393	3,370	1,620	8,430	2,670	14,020	5,045	0.570
	203.200	219.075	209.067	213.182	3,370	1,620	8,430	2,670	14,020	5,045	0.259
NBKB090XP0	9.000	9.625	9.231	9.393	3,780	1,730	9,450	2,880	17,600	6,050	0.660
	228.600	244.475	234.467	238.582	3,780	1,730	9,450	2,880	17,600	6,050	0.299
NBKB100XP0	10.000	10.625	10.231	10.393	4,190	1,840	10,460	3,080	21,580	7,120	0.730
	254.000	269.875	259.867	263.982	4,190	1,840	10,460	3,080	21,580	7,120	0.331
NBKB110XP0	11.000	11.625	11.231	11.393	4,590	1,945	11,480	3,280	25,970	8,255	0.750
	279.400	295.275	285.267	289.382	4,590	1,945	11,480	3,280	25,970	8,255	0.340
NBKB120XP0	12.000	12.625	12.231	12.393	5,000	2,045	12,500	3,470	30,770	9,445	0.830
	304.800	320.675	310.667	314.782	5,000	2,045	12,500	3,470	30,770	9,445	0.376
NBKB140XP0	14.000	14.625	14.231	14.393	5,810	2,235	14,530	3,840	41,580	11,995	1.050
	355.600	371.475	361.467	365.582	5,810	2,235	14,530	3,840	41,580	11,995	0.476
NBKB160XP0	16.000	16.625	16.231	16.393	6,620	2,410	16,560	4,190	54,020	14,750	1.200
	406.400	422.275	412.267	416.382	6,620	2,410	16,560	4,190	54,020	14,750	0.544
NBKB180XP0	18.000	18.625	18.231	18.393	7,440	2,575	18,590	4,520	68,090	17,695	1.350
	457.200	473.075	463.067	467.182	7,440	2,575	18,590	4,520	68,090	17,695	0.612
NBKB200XP0	20.000	20.625	20.231	20.393	8,250	2,730	20,620	4,850	83,780	20,815	1.500
	508.000	523.875	513.867	517.982	8,250	2,730	20,620	4,850	83,780	20,815	0.680

Open 4-Point Contact-Tppe X (NBKC 3/8" x 3/8")

NBKC SERIES 3/8" x 3/8"
NICE PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						Appx Weight LBS/KG
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
NBKC040XP0	4.000	4.750	4.277	4.473	2,100	1,415	5,260	2,210	4,600	2,325	0.450
	101.600	120.650	108.636	113.614	2,100	1,415	5,260	2,210	4,600	2,325	0.204
NBKC042XP0	4.250	5.000	4.527	4.723	2,220	1,465	5,560	2,290	5,140	2,540	0.470
	107.950	127.000	114.986	119.964	2,220	1,465	5,560	2,290	5,140	2,540	0.213
NBKC045XP0	4.500	5.250	4.777	4.973	2,340	1,510	5,860	2,380	5,710	2,760	0.480
	114.300	133.350	121.336	126.314	2,340	1,510	5,860	2,380	5,710	2,760	0.218
NBKC047XP0	4.750	5.500	5.027	5.223	2,460	1,555	6,160	2,460	6,320	2,990	0.500
	120.650	139.700	127.686	132.664	2,460	1,555	6,160	2,460	6,320	2,990	0.227
NBKC050XP0	5.000	5.750	5.277	5.473	2,590	1,600	6,460	2,540	6,950	3,225	0.580
	127.000	146.050	134.036	139.014	2,590	1,600	6,460	2,540	6,950	3,225	0.263
NBKC055XP0	5.500	6.250	5.777	5.973	2,830	1,685	7,060	2,690	8,300	3,715	0.590
	139.700	158.750	146.736	151.714	2,830	1,685	7,060	2,690	8,300	3,715	0.268
NBKC060XP0	6.000	6.750	6.277	6.473	3,070	1,770	7,660	2,840	9,770	4,235	0.630
	152.400	171.450	159.436	164.414	3,070	1,770	7,660	2,840	9,770	4,235	0.286
NBKC065XP0	6.500	7.250	6.777	6.973	3,310	1,850	8,270	2,990	11,370	4,775	0.680
	165.100	184.150	172.136	177.114	3,310	1,850	8,270	2,990	11,370	4,775	0.308
NBKC070XP0	7.000	7.750	7.277	7.473	3,550	1,930	8,870	3,130	13,080	5,340	0.730
	177.800	196.850	184.836	189.814	3,550	1,930	8,870	3,130	13,080	5,340	0.331
NBKC075XP0	7.500	8.250	7.777	7.973	3,790	2,005	9,470	3,270	14,910	5,930	0.780
	190.500	209.550	197.536	202.514	3,790	2,005	9,470	3,270	14,910	5,930	0.354
NBKC080XP0	8.000	8.750	8.277	8.473	4,030	2,080	10,070	3,410	16,870	6,540	0.840
	203.200	222.250	210.236	215.214	4,030	2,080	10,070	3,410	16,870	6,540	0.381
NBKC090XP0	9.000	9.750	9.277	9.473	4,510	2,225	11,270	3,670	21,130	7,830	0.940
	228.600	247.650	235.636	240.614	4,510	2,225	11,270	3,670	21,130	7,830	0.426
NBKC100XP0	10.000	10.750	10.277	10.473	4,990	2,365	12,470	3,930	25,880	9,200	1.060
	254.000	273.050	261.036	266.014	4,990	2,365	12,470	3,930	25,880	9,200	0.481
NBKC110XP0	11.000	11.750	11.277	11.473	5,470	2,495	13,680	4,180	31,110	10,650	1.160
	279.400	298.450	286.436	291.414	5,470	2,495	13,680	4,180	31,110	10,650	0.526
NBKC120XP0	12.000	12.750	12.277	12.473	5,950	2,620	14,880	4,420	36,830	12,175	1.250
	304.800	323.850	311.836	316.814	5,950	2,620	14,880	4,420	36,830	12,175	0.567
NBKC140XP0	14.000	14.750	14.277	14.473	6,910	2,860	17,280	4,890	49,690	15,435	1.520
	355.600	374.650	362.636	367.614	6,910	2,860	17,280	4,890	49,690	15,435	0.689
NBKC160XP0	16.000	16.750	16.277	16.473	7,880	3,085	19,690	5,330	64,480	18,955	1.730
	406.400	425.450	413.436	418.414	7,880	3,085	19,690	5,330	64,480	18,955	0.785
NBKC180XP0	18.000	18.750	18.277	18.473	8,840	3,295	22,090	5,760	81,190	22,710	1.940
	457.200	476.250	464.236	469.214	8,840	3,295	22,090	5,760	81,190	22,710	0.880
NBKC200XP0	20.000	20.750	20.277	20.473	9,800	3,490	24,500	6,170	99,830	26,695	2.160
	508.000	527.050	515.036	520.014	9,800	3,490	24,500	6,170	99,830	26,695	0.980
NBKC250XP0	25.000	25.750	25.277	25.473	12,200	3,940	30,510	7,140	154,800	37,520	2.690
	635.000	654.050	642.036	647.014	12,200	3,940	30,510	7,140	154,800	37,520	1.220
NBKC300XP0	30.000	30.750	30.277	30.473	14,610	4,340	36,520	8,050	221,900	49,435	3.210
	762.000	781.050	769.036	774.014	14,610	4,340	36,520	8,050	221,900	49,435	1.456

Open 4-Point Contact-Tppe X (NBKD 1/2" x 1/2")

NBKD SERIES 1/2" x 1/2"
NICE PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						Appx Weight LBS/KG
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
NBKD040XP0	4.000	5.000	4.370	4.630	3,080	2,310	7,700	3,520	6,930	3,900	0.780
	101.600	127.000	110.998	117.602	3,080	2,310	7,700	3,520	6,930	3,900	0.354
NBKD042XP0	4.250	5.250	4.620	4.880	3,190	2,355	7,980	3,600	7,580	4,195	0.830
	107.950	133.350	117.348	123.952	3,190	2,355	7,980	3,600	7,580	4,195	0.376
NBKD045XP0	4.500	5.500	4.870	5.130	3,420	2,455	8,550	3,770	8,550	4,600	0.880
	114.300	139.700	123.698	130.302	3,420	2,455	8,550	3,770	8,550	4,600	0.399
NBKD047XP0	4.750	5.750	5.120	5.380	3,530	2,495	8,840	3,860	9,280	4,915	0.940
	120.650	146.050	130.048	136.652	3,530	2,495	8,840	3,860	9,280	4,915	0.426
NBKD050XP0	5.000	6.000	5.370	5.630	3,760	2,590	9,410	4,020	10,350	5,350	1.000
	127.000	152.400	136.398	143.002	3,760	2,590	9,410	4,020	10,350	5,350	0.454
NBKD055XP0	5.500	6.500	5.870	6.130	4,100	2,725	10,260	4,260	12,310	6,135	1.060
	139.700	165.100	149.098	155.702	4,100	2,725	10,260	4,260	12,310	6,135	0.481
NBKD060XP0	6.000	7.000	6.370	6.630	4,450	2,855	11,120	4,490	14,450	6,960	1.160
	152.400	177.800	161.798	168.402	4,450	2,855	11,120	4,490	14,450	6,960	0.526
NBKD065XP0	6.500	7.500	6.870	7.130	4,790	2,980	11,970	4,720	16,760	7,825	1.220
	165.100	190.500	174.498	181.102	4,790	2,980	11,970	4,720	16,760	7,825	0.553
NBKD070XP0	7.000	8.000	7.370	7.630	5,130	3,105	12,830	4,940	19,240	8,730	1.310
	177.800	203.200	187.198	193.802	5,130	3,105	12,830	4,940	19,240	8,730	0.594
NBKD075XP0	7.500	8.500	7.870	8.130	5,470	3,220	13,680	5,160	21,890	9,670	1.410
	190.500	215.900	199.898	206.502	5,470	3,220	13,680	5,160	21,890	9,670	0.640
NBKD080XP0	8.000	9.000	8.370	8.630	5,810	3,340	14,540	5,370	24,710	10,645	1.530
	203.200	228.600	212.598	219.202	5,810	3,340	14,540	5,370	24,710	10,645	0.694
NBKD090XP0	9.000	10.000	9.370	9.630	6,500	3,560	16,250	5,790	30,870	12,695	1.720
	228.600	254.000	237.998	244.602	6,500	3,560	16,250	5,790	30,870	12,695	0.780
NBKD100XP0	10.000	11.000	10.370	10.630	7,180	3,775	17,960	6,190	37,710	14,870	1.880
	254.000	279.400	263.398	270.002	7,180	3,775	17,960	6,190	37,710	14,870	0.853
NBKD110XP0	11.000	12.000	11.370	11.630	7,870	3,980	19,670	6,570	45,230	17,175	2.060
	279.400	304.800	288.798	295.402	7,870	3,980	19,670	6,570	45,230	17,175	0.934
NBKD120XP0	12.000	13.000	12.370	12.630	8,550	4,180	21,380	6,950	53,440	19,590	2.250
	304.800	330.200	314.198	320.802	8,550	4,180	21,380	6,950	53,440	19,590	1.021
NBKD140XP0	14.000	15.000	14.370	14.630	9,920	4,550	24,800	7,670	71,910	24,755	2.730
	355.600	381.000	364.998	371.602	9,920	4,550	24,800	7,670	71,910	24,755	1.238
NBKD160XP0	16.000	17.000	16.370	16.630	11,290	4,900	28,220	8,360	93,110	30,325	3.100
	406.400	431.800	415.798	422.402	11,290	4,900	28,220	8,360	93,110	30,325	1.406
NBKD180XP0	18.000	19.000	18.370	18.630	12,650	5,225	31,640	9,030	117,000	36,270	3.480
	457.200	482.600	466.598	473.202	12,650	5,225	31,640	9,030	117,000	36,270	1.579
NBKD200XP0	20.000	21.000	20.370	20.630	14,020	5,535	35,060	9,670	143,700	42,560	3.850
	508.000	533.400	517.398	524.002	14,020	5,535	35,060	9,670	143,700	42,560	1.746
NBKD250XP0	25.000	26.000	25.370	25.630	17,440	6,235	43,610	11,180	222,400	59,650	4.790
	635.000	660.400	644.398	651.002	17,440	6,235	43,610	11,180	222,400	59,650	2.173
NBKD300XP0	30.000	31.000	30.370	30.630	20,860	6,855	52,160	12,600	318,100	78,445	5.730
	762.000	787.400	771.398	778.002	20,860	6,855	52,160	12,600	318,100	78,445	2.599

Open 4-Point Contact-Tppe X (NBKF 3/4" x 3/4")

NBKF SERIES 3/4" x 3/4"
NICE PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						Appx Weight LBS/KG
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
NBKF040XP0	4.000	5.500	4.555	4.945	5,360	4,665	13,400	6,830	12,730	8,310	1.900
	101.600	139.700	115.697	125.603	5,360	4,665	13,400	6,830	12,730	8,310	0.862
NBKF042XP0	4.250	5.750	4.805	5.195	5,640	4,795	14,110	7,070	14,110	8,995	2.000
	107.950	146.050	122.047	131.953	5,640	4,795	14,110	7,070	14,110	8,995	0.907
NBKF045XP0	4.500	6.000	5.060	5.445	5,930	4,925	14,810	7,300	15,550	9,695	2.100
	114.300	152.400	128.524	138.303	5,930	4,925	14,810	7,300	15,550	9,695	0.953
NBKF047XP0	4.750	6.250	5.305	5.695	6,210	5,050	15,520	7,530	17,070	10,415	2.200
	120.650	158.750	134.747	144.653	6,210	5,050	15,520	7,530	17,070	10,415	0.998
NBKF050XP0	5.000	6.500	5.555	5.945	6,490	5,170	16,220	7,760	18,660	11,155	2.300
	127.000	165.100	141.097	151.003	6,490	5,170	16,220	7,760	18,660	11,155	1.043
NBKF055XP0	5.500	7.000	6.055	6.445	7,050	5,415	17,630	8,200	22,040	12,695	2.500
	139.700	177.800	153.797	163.703	7,050	5,415	17,630	8,200	22,040	12,695	1.134
NBKF060XP0	6.000	7.500	6.555	6.945	7,620	5,650	19,050	8,630	25,710	14,310	2.700
	152.400	190.500	166.497	176.403	7,620	5,650	19,050	8,630	25,710	14,310	1.225
NBKF065XP0	6.500	8.000	7.055	7.445	8,180	5,880	20,460	9,050	29,660	15,995	2.900
	165.100	203.200	179.197	189.103	8,180	5,880	20,460	9,050	29,660	15,995	1.315
NBKF070XP0	7.000	8.500	7.555	7.945	8,750	6,105	21,870	9,460	33,890	17,745	3.200
	177.800	215.900	191.897	201.803	8,750	6,105	21,870	9,460	33,890	17,745	1.452
NBKF075XP0	7.500	9.000	8.055	8.445	9,310	6,325	23,280	9,870	38,410	19,570	3.400
	190.500	228.600	204.597	214.503	9,310	6,325	23,280	9,870	38,410	19,570	1.542
NBKF080XP0	8.000	9.500	8.555	8.945	9,880	6,535	24,690	10,260	43,200	21,455	3.500
	203.200	241.300	217.297	227.203	9,880	6,535	24,690	10,260	43,200	21,455	1.588
NBKF090XP0	9.000	10.500	9.555	9.945	11,000	6,945	27,510	11,030	53,640	25,410	3.900
	228.600	266.700	242.697	252.603	11,000	6,945	27,510	11,030	53,640	25,410	1.769
NBKF100XP0	10.000	11.500	10.555	10.945	12,130	7,340	30,330	11,770	65,210	29,610	4.300
	254.000	292.100	268.097	278.003	12,130	7,340	30,330	11,770	65,210	29,610	1.950
NBKF110XP0	11.000	12.500	11.555	11.945	13,260	7,720	33,150	12,490	77,910	34,030	4.800
	279.400	317.500	293.497	303.403	13,260	7,720	33,150	12,490	77,910	34,030	2.177
NBKF120XP0	12.000	13.500	12.555	12.945	14,390	8,085	35,970	13,190	91,730	38,665	5.200
	304.800	342.900	318.897	328.803	14,390	8,085	35,970	13,190	91,730	38,665	2.359
NBKF140XP0	14.000	15.500	14.555	14.945	16,650	8,775	41,620	14,530	122,800	48,555	6.000
	355.600	393.700	369.697	379.603	16,650	8,775	41,620	14,530	122,800	48,555	2.722
NBKF160XP0	16.000	17.500	16.555	16.945	18,900	9,420	47,260	15,820	158,300	59,200	7.100
	406.400	444.500	420.497	430.403	18,900	9,420	47,260	15,820	158,300	59,200	3.221
NBKF180XP0	18.000	19.500	18.555	18.945	21,160	10,030	52,900	17,060	198,400	70,535	7.900
	457.200	495.300	471.297	481.203	21,160	10,030	52,900	17,060	198,400	70,535	3.583
NBKF200XP0	20.000	21.500	20.555	20.945	23,420	10,600	58,550	18,250	243,000	82,530	8.900
	508.000	546.100	522.097	532.003	23,420	10,600	58,550	18,250	243,000	82,530	4.037
NBKF250XP0	25.000	26.500	25.555	25.945	29,060	11,910	72,650	21,070	374,200	115,035	10.900
	635.000	673.100	649.097	659.003	29,060	11,910	72,650	21,070	374,200	115,035	4.944
NBKF300XP0	30.000	31.500	30.555	30.945	34,700	13,065	86,760	23,720	533,600	150,710	13.000
	762.000	800.100	776.097	786.003	34,700	13,065	86,760	23,720	533,600	150,710	5.897
NBKF350XP0	35.000	36.500	35.555	35.945	40,350	14,100	100,900	26,220	721,200	189,105	15.100
	889.000	927.100	903.097	913.003	40,350	14,100	100,900	26,220	721,200	189,105	6.849

Open 4-Point Contact-Tppe X (NBKG 1" x 1")

NBKG SERIES 1" x 1"
NICE PART NUMBER	DIMENSION IN INCHES				CAPACITIES IN POUNDS / IN-LBS						Appx Weight LBS/KG
	BORE	OUTSIDE DIA	LAND DIA	LAND DIA	RADIAL		THRUST		MOMENT
	B	D	L₁	L₂	STATIC	DYN	STATIC	DYN	STATIC	DYN
NBKG040XP0	4.000	6.000	4.742	5.258	8,210	7,980	20,520	11,260	20,520	14,965	3.600
	101.600	152.400	120.447	133.553	8,210	7,980	20,520	11,260	20,520	14,965	1.633
NBKG042XP0	4.250	6.250	4.992	5.508	8,210	7,915	20,520	11,260	21,550	15,590	3.800
	107.950	158.750	126.797	139.903	8,210	7,915	20,520	11,260	21,550	15,590	1.724
NBKG045XP0	4.500	6.500	5.242	5.758	8,760	8,205	21,890	11,750	24,080	16,930	4.000
	114.300	165.100	133.147	146.253	8,760	8,205	21,890	11,750	24,080	16,930	1.814
NBKG047XP0	4.750	6.750	5.492	6.008	9,300	8,485	23,260	12,230	26,740	18,305	4.100
	120.650	171.450	139.497	152.603	9,300	8,485	23,260	12,230	26,740	18,305	1.860
NBKG050XP0	5.000	7.000	5.742	6.258	9,850	8,760	24,620	12,710	29,550	19,720	4.300
	127.000	177.800	145.847	158.953	9,850	8,760	24,620	12,710	29,550	19,720	1.950
NBKG055XP0	5.500	7.500	6.242	6.758	10,400	8,980	25,990	13,180	33,790	21,895	4.700
	139.700	190.500	158.547	171.653	10,400	8,980	25,990	13,180	33,790	21,895	2.132
NBKG060XP0	6.000	8.000	6.742	7.258	11,490	9,505	28,730	14,090	40,220	24,955	5.100
	152.400	203.200	171.247	184.353	11,490	9,505	28,730	14,090	40,220	24,955	2.313
NBKG065XP0	6.500	8.500	7.242	7.758	12,040	9,715	30,100	14,530	45,140	27,325	5.400
	165.100	215.900	183.947	197.053	12,040	9,715	30,100	14,530	45,140	27,325	2.449
NBKG070XP0	7.000	9.000	7.742	8.258	13,130	10,210	32,830	15,400	52,530	30,635	5.800
	177.800	228.600	196.647	209.753	13,130	10,210	32,830	15,400	52,530	30,635	2.631
NBKG075XP0	7.500	9.500	8.242	8.758	13,680	10,410	34,200	15,820	58,140	33,195	6.100
	190.500	241.300	209.347	222.453	13,680	10,410	34,200	15,820	58,140	33,195	2.767
NBKG080XP0	8.000	10.000	8.742	9.258	14,770	10,880	36,940	16,650	66,480	36,745	6.500
	203.200	254.000	222.047	235.153	14,770	10,880	36,940	16,650	66,480	36,745	2.948
NBKG090XP0	9.000	11.000	9.742	10.258	16,420	11,525	41,040	17,870	82,080	43,240	7.200
	228.600	279.400	247.447	260.553	16,420	11,525	41,040	17,870	82,080	43,240	3.266
NBKG100XP0	10.000	12.000	10.742	11.258	18,060	12,145	45,140	19,040	99,320	50,125	7.900
	254.000	304.800	272.847	285.953	18,060	12,145	45,140	19,040	99,320	50,125	3.583
NBKG110XP0	11.000	13.000	11.742	12.258	19,700	12,740	49,250	20,180	118,200	57,345	8.600
	279.400	330.200	298.247	311.353	19,700	12,740	49,250	20,180	118,200	57,345	3.901
NBKG120XP0	12.000	14.000	12.742	13.258	21,340	13,315	53,350	21,280	138,700	64,935	9.300
	304.800	355.600	323.647	336.753	21,340	13,315	53,350	21,280	138,700	64,935	4.218
NBKG140XP0	14.000	16.000	14.742	15.258	24,620	14,405	61,560	23,410	184,700	81,055	10.800
	355.600	406.400	374.447	387.553	24,620	14,405	61,560	23,410	184,700	81,055	4.899
NBKG160XP0	16.000	18.000	16.742	17.258	27,910	15,425	69,770	25,450	237,200	98,375	12.300
	406.400	457.200	425.247	438.353	27,910	15,425	69,770	25,450	237,200	98,375	5.579
NBKG180XP0	18.000	20.000	18.742	19.258	31,190	16,385	77,980	27,410	296,300	116,795	13.700
	457.200	508.000	476.047	489.153	31,190	16,385	77,980	27,410	296,300	116,795	6.214
NBKG200XP0	20.000	22.000	20.742	21.258	34,470	17,295	86,180	29,300	362,000	136,240	15.800
	508.000	558.800	526.847	539.953	34,470	17,295	86,180	29,300	362,000	136,240	7.167
NBKG250XP0	25.000	27.000	25.742	26.258	42,680	19,360	106,700	33,780	554,900	188,840	19.500
	635.000	685.800	653.847	666.953	42,680	19,360	106,700	33,780	554,900	188,840	8.845
NBKG300XP0	30.000	32.000	30.742	31.258	50,890	21,200	127,200	37,980	788,800	246,540	23.300
	762.000	812.800	780.847	793.953	50,890	21,200	127,200	37,980	788,800	246,540	10.569
NBKG350XP0	35.000	37.000	35.742	36.258	59,100	22,845	147,700	41,970	1,064,000	308,525	27.100
	889.000	939.800	907.847	920.953	59,100	22,845	147,700	41,970	1,064,000	308,525	12.293

X-type Four-point Contact Ball Bearings

X-type four-point contact ball bearings, often referred to as four-point contact ball bearings or simply four-point bearings, are a unique type of rolling-element bearing designed to handle significant axial loads in both directions, as well as limited radial loads. Their key characteristic is their inner and outer rings with raceways that are designed to accommodate four contact points with each ball.

Key Features and Benefits

Features and Benefits:

The type X bearing or four-point contact bearing are designed with gothic arch raceways creating 4 contact points between the balls and the raceways. Because of its special designation, the type X bearings would be excellent for moment loading and reversing axial loading. Meanwhile, the type X bearings can be provided for other light loading conditions, but not be recommended in place of the type A or type C bearing for pure radial loads.

Thin cross section
Lightweight
Low friction
High stiffness
High running accuracy

TYPE X LOAD CONDITION
Radial	Axial	Moment	Reversing Axial	Combined Radial-Thrust
Poor	Good	Excellent	Excellent	Poor

Interchange with LYNBC、Kaydon/SKF、Silverthin、INA、FAG、NSK、NTN、SSB、RBC

High Axial Load Capacity: This is the defining characteristic. They can effectively handle axial loads in both directions (push-pull). They are designed to have relatively large contact angles (often around 45 degrees) which optimize the axial load carrying capacity.

Combined Load Capacity (Limited): While primarily for axial loads, they can also handle some radial load. However, radial load capacity is generally lower compared to dedicated radial bearings.

Space-Saving Design: They can often replace two single-row angular contact ball bearings arranged back-to-back, saving space and reducing complexity in the assembly.

High Speed Capability (Relatively): They can often operate at higher speeds compared to some other bearing types that handle high axial loads. However, this is highly dependent on the specific bearing design, lubrication, and application.

Accommodates Some Misalignment (Limited): They have a limited ability to accommodate misalignment between the shaft and housing.

How They Work:

The inner ring is typically split in two halves (though single-piece inner rings are also available), with each half having a raceway. The outer ring also has a single raceway. When an axial load is applied, the balls make contact with the raceways at four points: two on the inner ring and two on the outer ring. This four-point contact allows the bearing to effectively distribute the load and handle axial forces in either direction.

X-type Four-point Contact Ball Bearings Applications

Four-point contact ball bearings are commonly used in applications where axial load is the dominant factor, and space is limited. Some common examples include:

Machine Tools: Specifically, in rotary tables, spindles, and other precision axes.

Robotics: In joints and other mechanisms requiring precise motion and high axial load capacity.

Pumps and Compressors: For axial load support in rotating elements.

Medical Equipment: Where precision, compact size, and reliability are crucial.

Slewing Rings: Smaller versions are often used in slewing rings.

Clutches and Gearboxes: Where axial forces are present.

Wind Turbines (Yaw and Pitch Systems): In some designs for yaw and pitch control.

Considerations When Selecting a Four-Point Contact Bearing

Load Requirements: Determine the axial and radial load magnitude and direction. Accurately calculate the dynamic and static load ratings required.

Speed: Determine the operating speed. Consider lubrication requirements for the desired speed.

Operating Temperature: Consider the operating temperature range. This will influence the selection of materials, clearances, and lubrication.

Mounting: Determine the mounting method and available space. Consider the use of split or solid inner rings.

Lubrication: Choose the appropriate lubricant (grease or oil) and lubrication method for the application.

Clearance: Select the appropriate internal clearance for the operating conditions.

Advantages Compared to other Bearing Types for Axial Load

Space Efficiency: Often more compact than using two angular contact bearings.

Simplified Assembly: Easier to mount than two angular contact bearings.

Cost-Effective: Potentially lower cost than two equivalent angular contact bearings.