BAR/BTR Series High Speed Thrust Angular Contact Ball Bearings

BAR/BTR High Speed Angular Contact Thrust Ball Bearings

BAR/BTR High-Speed Angular Contact Thrust Ball Bearings are high-performance products developed for high-speed and high-rigidity applications such as lathe spindles. This series has two contact angles: 30° (BAR) and 40° (BTR), and three ball materials: steel balls (S), ultra-long-life bearing rolling elements (E), and ceramic balls (H). Bearings with a 30° contact angle can withstand faster speeds, while bearings with a 40° contact angle are more suitable for applications that require higher axial rigidity. BAR and BTR are designed with special width dimensions and can be used interchangeably with 2344 series bidirectional thrust angular contact bearings. They can meet the needs of low heat, high speed, and high rigidity applications.

Product Details

Designation	Dimensiones			Basic Load Ratings(KN)		Limiting speeds（rpm）		Weight
	(mm)			Ca (Dynamic)	C0a (Static)	Limiting speeds（rpm）		Weight
	D	d	2B			Grease	Oil	Kg
50BAR10S	50	80	28.5	14.7	27.7	11600	14700	0.272
50BAR10H	50	80	28.5	14.7	27.7	13100	16200	0.257
55BAR10S	55	90	33.0	18.2	35.0	10400	13200	0.412
55BAR10H	55	90	33.0	18.2	35.0	11800	14500	0.391
60BAR10S	60	95	33.0	18.9	38.0	9700	12300	0.420
60BAR10H	60	95	33.0	18.9	38.0	11000	13600	0.397
65BAR10S	65	100	33.0	19.5	41.5	9100	11600	0.447
65BAR10H	65	100	33.0	19.5	41.5	10400	12800	0.406
70BAR10S	70	110	36.0	26.9	55.0	8400	10600	0.601
70BAR10H	70	110	36.0	26.9	55.0	9500	11700	0.561
75BAR10S	75	115	36.0	27.3	58.0	7900	10000	0.634
75BAR10H	75	115	36.0	27.3	58.0	9000	11100	0.592
80BAR10S	80	125	40.5	32.0	68.5	7400	9300	0.875
80BAR10H	80	125	40.5	32.0	68.5	8300	10300	0.821
85BAR10S	85	130	40.5	32.5	71.5	7000	8900	0.971
85BAR10H	85	130	40.5	32.5	71.5	8000	9800	0.915
90BAR10S	90	140	45.0	42.5	92.5	6600	8300	1.198
90BAR10H	90	140	45.0	42.5	92.5	7400	9200	1.124
95BAR10S	95	145	45.0	43.0	96.5	6300	8000	1.320
95BAR10H	95	145	45.0	43.0	96.5	7100	8800	1.231
100BAR10S	100	150	45.0	43.5	100.0	6000	7600	1.399
100BAR10H	100	150	45.0	43.5	100.0	6800	8400	1.307
105BAR10S	105	160	49.5	49.5	115.0	5700	7200	1.740
105BAR10H	105	160	49.5	49.5	115.0	6500	8000	1.624
110BAR10S	110	170	54.0	55.5	131	5400	6800	2.11
110BAR10H	110	170	54.0	55.5	131	6100	7500	1.972
120BAR10S	120	180	54.0	57.0	141	5000	6400	2.262
120BAR10H	120	180	54.0	57.0	141	5700	7000	2.114
130BAR10S	130	200	63.0	72.5	172	4600	5800	3.362
130BAR10H	130	200	63.0	72.5	172	5200	6400	3.148
140BAR10S	140	210	63.0	78.5	200	4300	5500	3.558
150BAR10S	150	225	67.5	92.5	234	4000	5100	4.354
160BAR10S	160	240	72.0	98.5	250	3800	4800	5.640
170BAR10S	170	260	81.0	115.0	295	3500	4500	7.900
180BAR10S	180	280	90.0	151.0	385	3300	4200	10.200
190BAR10S	190	290	90.0	151.0	390	3200	4000	10.700
200BAR10S	200	310	99.0	169.0	444	3000	3800	13.800
50BTR10S	50	80	28.5	17.4	31.5	10000	13100	0.272
50BTR10H	50	80	28.5	17.4	31.5	11600	14700	0.257
55BTR10S	55	90	33.0	21.6	40.0	9000	11800	0.412
55BTR10H	55	90	33.0	21.6	40.0	10400	13200	0.391
60BTR10S	60	95	33.0	22.4	43.5	8400	11000	0.420
60BTR10H	60	95	33.0	22.4	43.5	9700	12300	0.397
65BTR10S	65	100	33.0	23.1	47.0	7900	10400	0.447
65BTR10H	65	100	33.0	23.1	47.0	9100	11600	0.406
70BTR10S	70	110	36.0	32.0	63.0	7300	9500	0.601
70BTR10H	70	110	36.0	32.0	63.0	8400	10600	0.561
75BTR10S	75	115	36.0	32.5	65.5	6900	9000	0.634
75BTR10H	75	115	36.0	32.5	65.5	7900	10000	0.592
80BTR10S	80	125	40.5	38.0	78.0	6400	8300	0.875
80BTR10H	80	125	40.5	38.0	78.0	7400	9300	0.821
85BTR10S	85	130	40.5	38.5	81.5	6100	8000	0.971
85BTR10H	85	130	40.5	38.5	81.5	7000	8900	0.915
90BTR10S	90	140	45.0	50.0	105.0	5700	7400	1.198
90BTR10H	90	140	45.0	50.0	105.0	6600	8300	1.124
95BTR10S	95	145	45.0	51.0	110.0	5500	7100	1.320
95BTR10H	95	145	45.0	51.0	110.0	6300	8000	1.231
100BTR10S	100	150	45.0	51.5	114.0	5200	6800	1.399
100BTR10H	100	150	45.0	51.5	114.0	6000	7600	1.307
105BTR10S	105	160	49.5	58.5	131.0	5000	6500	1.740
105BTR10H	105	160	49.5	58.5	131.0	5700	7200	1.624
110BTR10S	110	170	54.0	66.0	148	4700	6100	2.110
110BTR10H	110	170	54.0	66.0	148	5400	6800	1.972
120BTR10S	120	180	54.0	68.0	160	4400	5700	2.262
120BTR10H	120	180	54.0	68.0	160	5000	6400	2.114
130BTR10S	130	200	63.0	86.0	195	4000	5200	3.362
130BTR10H	130	200	63.0	86.0	195	4600	5800	3.148
140BTR10S	140	210	63.0	93.0	227	3800	4900	3.558
150BTR10S	150	225	67.5	110.0	267	3500	4600	4.354
160BTR10S	160	240	72.0	117.0	284	3300	4300	5.640
170BTR10S	170	260	81.0	136.0	335	3100	4000	7.900
180BTR10S	180	280	90.0	179.0	440	2900	3700	10.200
190BTR10S	190	290	90.0	179.0	445	2800	3600	10.700
200BTR10S	200	310	99.0	201.0	505	2600	3400	13.800

BAR/BTR High-Speed Angular Contact Thrust Ball Bearings are suitable for shaft diameters of 50-200 mm. They have high-speed performance, strong axial load-bearing capacity, low friction design, low heat generation, high rigidity, and longer bearing life. BAR and BTR series high-= speed thrust angular contact ball bearings can provide high reliability and ultra high operating accuracy for various applications such as surface grindubg, milling machines, machining centers, lathes, etc. The design of BAR and BTR series high speed thrust angular contact ball bearings is equivalent to two non-separable single-row angular contact ball bearings paired back to back, and can withstand axial loads in both directions. These bearings are manufactured with a predetermined preload as standard, so they have an appropriate working preload after installation.

This preload is formed by accurately adjusting the protrusion of the inner and outer rings during the manufacturing process. This series of bearings can provide hybrid ceramic types with the suffix H, such as 50BAR10H. BAR and BTR series high-speed thrust angular contact ball bearings have the same inner and outer diameters as 2344 series bearings, but the bearing width is reduced by about 25%, making them particularly suitable for very compact configurations. BAR and BTR series operate faster than 2344 series, but cannot withstand the same loads and provide the same axial stiffness as 2344 series. BAR and BTR series hybrid ceramic bearings consist of bearing steel rings and bearing-grade silicon nitride (ceramic) rolling elements.

Since ceramic balls are lighter, have a higher elastic modulus and lower thermal expansion coefficient than steel balls, hybrid ceramic bearings can provide the following advantages:

1. Higher stiffness

2. Higher speed performance

3. Smaller centrifugal and inertial forces in the bearing

4. Greatly reduced outer ring rolling contact stress at high speeds

5. Smaller friction heat

6. Lower energy loss

7. Longer bearing and grease service life

8. Less prone to slippage and cage damage when subjected to frequent rapid starts and stops

9. Less sensitive to differences in temperature in the bearing

10. Higher preload/clearance control accuracy.

The V-shaped mark on the outer diameter surface of the outer ring of the BAR and BTR series high-speed thrust angular contact ball bearings indicates how the bearing should be installed to obtain the appropriate preload for the bearing set. The bearing parts and bearing sets must be supplied together and installed in the specified order.

Our company has professional sales and technical engineers who are responsible for providing users with technical consultation, technical services and product technical training on precision bearing data and installation and use. Perfect pre-sales, in-sales and after-sales services constitute a guarantee system for high-quality services, providing users with reliable quality bearing products and creating excellent user experience and rich benefits for every customer.

If you have any questions about products and services, please contact the company's service department directly.

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